Materials Science › Biomaterials

Calcium Carbonate Crystallization and Inhibition

Works Count: 30109

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This cluster of papers explores the field of bioinspired structural materials and biomineralization, focusing on topics such as nanocomposites, crystallization, mechanical properties, hierarchical materials, calcium carbonate, nacre, and biomimetic design.

Keywords

Biomineralization; Bioinspired Materials; Nanocomposites; Crystallization; Mechanical Properties; Nanoscale Structure; Hierarchical Materials; Calcium Carbonate; Nacre; Biomimetic Design

Control of crystal nucleation by patterned self-assembled monolayers

1999-04-01

Joanna Aizenberg , Andrew J. Black , George M. Whitesides

Crystallization by particle attachment in synthetic, biogenic, and geologic environments

2015-07-30

James J. De Yoreo , Benjamin Gilbert , Nico A. J. M. Sommerdijk +7 more

Field and laboratory observations show that crystals commonly form by the addition and attachment of particles that range from multi-ion complexes to fully formed nanoparticles. The particles involved in these … Field and laboratory observations show that crystals commonly form by the addition and attachment of particles that range from multi-ion complexes to fully formed nanoparticles. The particles involved in these nonclassical pathways to crystallization are diverse, in contrast to classical models that consider only the addition of monomeric chemical species. We review progress toward understanding crystal growth by particle-attachment processes and show that multiple pathways result from the interplay of free-energy landscapes and reaction dynamics. Much remains unknown about the fundamental aspects, particularly the relationships between solution structure, interfacial forces, and particle motion. Developing a predictive description that connects molecular details to ensemble behavior will require revisiting long-standing interpretations of crystal formation in synthetic systems, biominerals, and patterns of mineralization in natural environments.

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Ion-association complexes unite classical and non-classical theories for the biomimetic nucleation of calcium phosphate

2013-02-19

Wouter J. E. M. Habraken , Jinhui Tao , Laura Brylka +7 more

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The conflicts between strength and toughness

2011-10-24

Robert O. Ritchie

Tough, Bio-Inspired Hybrid Materials

2008-12-04

Étienne Munch , Maximilien E. Launey , Daan Hein Alsem +3 more

The notion of mimicking natural structures in the synthesis of new structural materials has generated enormous interest but has yielded few practical advances. Natural composites achieve strength and toughness through … The notion of mimicking natural structures in the synthesis of new structural materials has generated enormous interest but has yielded few practical advances. Natural composites achieve strength and toughness through complex hierarchical designs that are extremely difficult to replicate synthetically. We emulate nature's toughening mechanisms by combining two ordinary compounds, aluminum oxide and polymethyl methacrylate, into ice-templated structures whose toughness can be more than 300 times (in energy terms) that of their constituents. The final product is a bulk hybrid ceramic-based material whose high yield strength and fracture toughness [ approximately 200 megapascals (MPa) and approximately 30 MPa.m(1/2)] represent specific properties comparable to those of aluminum alloys. These model materials can be used to identify the key microstructural features that should guide the synthesis of bio-inspired ceramic-based composites with unique strength and toughness.

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Sea Urchin Spine Calcite Forms via a Transient Amorphous Calcium Carbonate Phase

2004-11-11

Yael Politi , Talmon Arad , Eugenia Klein +2 more

The skeletons of adult echinoderms comprise large single crystals of calcite with smooth convoluted fenestrated morphologies, raising many questions about how they form. By using water etching, infrared spectroscopy, electron … The skeletons of adult echinoderms comprise large single crystals of calcite with smooth convoluted fenestrated morphologies, raising many questions about how they form. By using water etching, infrared spectroscopy, electron diffraction, and environmental scanning electron microscopy, we show that sea urchin spine regeneration proceeds via the initial deposition of amorphous calcium carbonate. Because most echinoderms produce the same type of skeletal material, they probably all use this same mechanism. Deposition of transient amorphous phases as a strategy for producing single crystals with complex morphology may have interesting implications for the development of sophisticated materials.

The mechanical design of nacre

1988-09-22

Andrew Jackson , Julian F. V. Vincent , R. M. Turner

Mother-of-pearl (nacre) is a platelet-reinforced composite, highly filled with calcium carbonate (aragonite). The Young modulus, determined from beams of a span-to-depth ratio of no less than 15 (a necessary precaution), … Mother-of-pearl (nacre) is a platelet-reinforced composite, highly filled with calcium carbonate (aragonite). The Young modulus, determined from beams of a span-to-depth ratio of no less than 15 (a necessary precaution), is of the order of 70 GPa (dry) and 60 GPa (wet), much higher than previously recorded values. These values can be derived from ‘shear-lag’ models developed for platey composites, suggesting that nacre is a near-ideal material. The tensile strength of nacre is of the order of 170 MPa (dry) and 140 MPa (wet), values which are best modelled assuming that pull-out of the platelets is the main mode of failure. In three-point bending, depending on the span-to-depth ratio and degree of hydration, the work to fracture across the platelets varies from 350 to 1240 J m -2 . In general, the effect of water is to increase the ductility of nacre and increase the toughness almost tenfold by the associated introduction of plastic work. The pull-out model is sufficient to account for the toughness of dry nacre, but accounts for only a third of the toughness of wet nacre. The additional contribution probably comes from debonding within the thin layer of matrix material. Electron microscopy reveals that the ductility of wet nacre is caused by cohesive fracture along platelet lamellae at right angles to the main crack. The matrix appears to be well bonded to the lamellae, enabling the matrix to be stretched across the delamination cracks without breaking, thereby sustaining a force across a wider crack. Such a mechanism also explains why toughness is dependent on the span-to-depth ratio of the test piece. With this last observation as a possible exception, nacre does not employ any really novel mechanisms to achieve its mechanical properties. It is simply ‘well made’. The importance of nacre to the mollusc depends both on the material and the size of the shell. Catastrophic failure will be very likely in whole, undamaged shells which behave like unnotched beams at large span-to-depth ratios. This tendency is increased by the fact that predators act as ‘soft’ machines and store strain energy which can be fed into the material very quickly once the fracture stress has been reached. It may therefore be advantageous to have a shell made of an intrinsically less tough material which is better at stopping cracks (e. g. crossed lamellar). However, nacre may still be preferred for the short, thick shells of young molluscs, as these have a low span-to-depth ratio and can make better use of ductility mechanisms.

Nanostructured artificial nacre

2003-05-23

Zhiyong Tang , Nicholas A. Kotov , Sergei Magonov +1 more

Sr, Cd, Mn and Co distribution coefficients in calcite as a function of calcite precipitation rate

1981-04-01

Robert B. Lorens

Control of crystal phase switching and orientation by soluble mollusc-shell proteins

1996-05-01

Angela M. Belcher , X. H. Wu , R. J. Christensen +3 more

Calcium Carbonate Formation and Dissolution

2007-01-30

John W. Morse , Rolf S. Arvidson , Andreas Lüttge

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCalcium Carbonate Formation and DissolutionJohn W. Morse, Rolf S. Arvidson, and Andreas LüttgeView Author Information Department of Oceanography, MS-3146, Texas A&M University, College Station, Texas 77843, and … ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCalcium Carbonate Formation and DissolutionJohn W. Morse, Rolf S. Arvidson, and Andreas LüttgeView Author Information Department of Oceanography, MS-3146, Texas A&M University, College Station, Texas 77843, and Department of Earth Science MS-126, Rice University, 6100 Main Street, P.O. Box 1892, Houston, Texas 77251 Cite this: Chem. Rev. 2007, 107, 2, 342–381Publication Date (Web):January 30, 2007Publication History Published online30 January 2007Published inissue 1 February 2007https://pubs.acs.org/doi/10.1021/cr050358jhttps://doi.org/10.1021/cr050358jresearch-articleACS PublicationsCopyright © 2007 American Chemical SocietyRequest reuse permissionsArticle Views19087Altmetric-Citations808LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Calcite,Dissolution,Inorganic carbon compounds,Minerals,Seawater Get e-Alerts

The incorporation of Mg2+ and Sr2+ into calcite overgrowths: influences of growth rate and solution composition

1983-02-01

Alfonso Mucci , John W. Morse

Interactions between acidic proteins and crystals: stereochemical requirements in biomineralization.

1985-06-01

Lia Addadi , Stephen Weiner

Acidic matrix macromolecules are intimately involved in biological crystal growth. In vitro experiments, in which crystals of calcium dicarboxylate salts were grown in the presence of aspartic acid-rich proteins, revealed … Acidic matrix macromolecules are intimately involved in biological crystal growth. In vitro experiments, in which crystals of calcium dicarboxylate salts were grown in the presence of aspartic acid-rich proteins, revealed a stereochemical property common to all the interacting faces. Calcite crystals are nucleated on stereochemically analogous faces when proteins are adsorbed onto a rigid substrate. The importance of this property in biomineralization is discussed.

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Biomimetic Model Systems for Investigating the Amorphous Precursor Pathway and Its Role in Biomineralization

2008-11-12

Laurie B. Gower

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTBiomimetic Model Systems for Investigating the Amorphous Precursor Pathway and Its Role in BiomineralizationLaurie B. Gower*View Author Information Department of Materials Science & Engineering, University of Florida, … ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTBiomimetic Model Systems for Investigating the Amorphous Precursor Pathway and Its Role in BiomineralizationLaurie B. Gower*View Author Information Department of Materials Science & Engineering, University of Florida, 210A Rhines Hall, Gainesville, Florida 32611* To whom correspondence should be addressed. Phone: (352) 846-3336. Fax: (352) 846-3355. E-mail: [email protected]Cite this: Chem. Rev. 2008, 108, 11, 4551–4627Publication Date (Web):November 12, 2008Publication History Received31 July 2008Published online12 November 2008Published inissue 12 November 2008https://doi.org/10.1021/cr800443hCopyright © 2008 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views11766Altmetric-Citations825LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit Read OnlinePDF (15 MB) Get e-AlertsSUBJECTS:Calcite,Crystal structure,Crystallization,Crystals,Precursors Get e-Alerts

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Molecular recognition in biomineralization

1988-03-01

Stephen Mann

The role of magnesium in the crystal growth of calcite and aragonite from sea water

1975-04-01

Robert A. Berner

Structural Biological Materials: Critical Mechanics-Materials Connections

2013-02-14

Marc A. Meyers , Joanna McKittrick , Po‐Yu Chen

Spider silk is extraordinarily strong, mollusk shells and bone are tough, and porcupine quills and feathers resist buckling. How are these notable properties achieved? The building blocks of the materials … Spider silk is extraordinarily strong, mollusk shells and bone are tough, and porcupine quills and feathers resist buckling. How are these notable properties achieved? The building blocks of the materials listed above are primarily minerals and biopolymers, mostly in combination; the first weak in tension and the second weak in compression. The intricate and ingenious hierarchical structures are responsible for the outstanding performance of each material. Toughness is conferred by the presence of controlled interfacial features (friction, hydrogen bonds, chain straightening and stretching); buckling resistance can be achieved by filling a slender column with a lightweight foam. Here, we present and interpret selected examples of these and other biological materials. Structural bio-inspired materials design makes use of the biological structures by inserting synthetic materials and processes that augment the structures' capability while retaining their essential features. In this Review, we explain this idea through some unusual concepts.

Equilibrium and nonequilibrium oxygen isotope effects in synthetic carbonates

1997-08-01

Sang‐Tae Kim , James R. O’Neil

Merger of structure and material in nacre and bone – Perspectives on de novo biomimetic materials

2009-06-03

Horacio D. Espinosa , Jee E. Rim , François Barthelat +1 more

Oriented attachment and mesocrystals: Non-classical crystallization mechanisms based on nanoparticle assembly

2006-01-01

Markus Niederberger , Helmut Cölfen

In this review, we highlight particle based crystallization pathways leading to single crystals via mesoscopic transformation. In contrast to the classical mechanism of atom/molecule mediated growth of a single crystal, … In this review, we highlight particle based crystallization pathways leading to single crystals via mesoscopic transformation. In contrast to the classical mechanism of atom/molecule mediated growth of a single crystal, the particle mediated growth and assembly mechanisms are summarized as “non-classical crystallization”, including exiting processes like oriented attachment and mesocrystal formation. Detailed investigations of non-classical crystallization mechanisms are a recent development, but evidence for these pathways is rapidly increasing in the literature. A major driving force for these investigations originates from biomineralization, because it seems that these crystallization routes are frequently applied by natural organisms. We give a non-exhaustive literature survey on these two mechanisms with a focus on recent examples and studies, which are dedicated to a mechanistic understanding. Furthermore, conditions are introduced for which these non-classical crystallization mechanisms can be expected, as they are always an alternative reaction pathway to classical crystallization.

The Initial Stages of Template-Controlled CaCO 3 Formation Revealed by Cryo-TEM

2009-03-12

Émilie Pouget , Paul H. H. Bomans , Jeroen Goos +3 more

Biogenic calcium carbonate forms the inorganic component of seashells, otoliths, and many marine skeletons, and its formation is directed by an ordered template of macromolecules. Classical nucleation theory considers crystal … Biogenic calcium carbonate forms the inorganic component of seashells, otoliths, and many marine skeletons, and its formation is directed by an ordered template of macromolecules. Classical nucleation theory considers crystal formation to occur from a critical nucleus formed by the assembly of ions from solution. Using cryotransmission electron microscopy, we found that template-directed calcium carbonate formation starts with the formation of prenucleation clusters. Their aggregation leads to the nucleation of amorphous nanoparticles in solution. These nanoparticles assemble at the template and, after reaching a critical size, develop dynamic crystalline domains, one of which is selectively stabilized by the template. Our findings have implications for template-directed mineral formation in biological as well as in synthetic systems.

Control of Aragonite or Calcite Polymorphism by Mollusk Shell Macromolecules

1996-01-05

Giuseppe Falini , Shira Albeck , Steve Weiner +1 more

Many mineralizing organisms selectively form either calcite or aragonite, two polymorphs of calcium carbonate with very similar crystalline structures. Understanding how these organisms achieve this control has represented a major … Many mineralizing organisms selectively form either calcite or aragonite, two polymorphs of calcium carbonate with very similar crystalline structures. Understanding how these organisms achieve this control has represented a major challenge in the field of biomineralization. Macromolecules extracted from the aragonitic shell layers of some mollusks induced aragonite formation in vitro when preadsorbed on a substrate of β-chitin and silk fibroin. Macromolecules from calcitic shell layers induced mainly calcite formation under the same conditions. The results suggest that these macromolecules are responsible for the precipitation of either aragonite or calcite in vivo.

Mechanical properties of nanostructure of biological materials

2004-05-29

Baohua Ji , Huajian Gao

Bioinspired Design and Assembly of Platelet Reinforced Polymer Films

2008-02-21

Lorenz J. Bonderer , André R. Studart , Ludwig J. Gauckler

Although strong and stiff human-made composites have long been developed, the microstructure of today's most advanced composites has yet to achieve the order and sophisticated hierarchy of hybrid materials built … Although strong and stiff human-made composites have long been developed, the microstructure of today's most advanced composites has yet to achieve the order and sophisticated hierarchy of hybrid materials built up by living organisms in nature. Clay-based nanocomposites with layered structure can reach notable stiffness and strength, but these properties are usually not accompanied by the ductility and flaw tolerance found in the structures generated by natural hybrid materials. By using principles found in natural composites, we showed that layered hybrid films combining high tensile strength and ductile behavior can be obtained through the bottom-up colloidal assembly of strong submicrometer-thick ceramic platelets within a ductile polymer matrix.

Bioinspired structural materials

2014-10-26

Ulrike G. K. Wegst , Hao Bai , Eduardo Saiz +2 more

Freezing as a Path to Build Complex Composites

2006-01-26

Sylvain Deville , Eduardo Saiz , R.K. Nalla +1 more

Materials that are strong, ultralightweight, and tough are in demand for a range of applications, requiring architectures and components carefully designed from the micrometer down to the nanometer scale. Nacre, … Materials that are strong, ultralightweight, and tough are in demand for a range of applications, requiring architectures and components carefully designed from the micrometer down to the nanometer scale. Nacre, a structure found in many molluscan shells, and bone are frequently used as examples for how nature achieves this through hybrid organic-inorganic composites. Unfortunately, it has proven extremely difficult to transcribe nacre-like clever designs into synthetic materials, partly because their intricate structures need to be replicated at several length scales. We demonstrate how the physics of ice formation can be used to develop sophisticated porous and layered-hybrid materials, including artificial bone, ceramic-metal composites, and porous scaffolds for osseous tissue regeneration with strengths up to four times higher than those of materials currently used for implantation.

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Materials become insensitive to flaws at nanoscale: Lessons from nature

2003-05-05

Huajian Gao , Baohua Ji , Ingomar Jäger +2 more

Natural materials such as bone, tooth, and nacre are nanocomposites of proteins and minerals with superior strength. Why is the nanometer scale so important to such materials? Can we learn … Natural materials such as bone, tooth, and nacre are nanocomposites of proteins and minerals with superior strength. Why is the nanometer scale so important to such materials? Can we learn from this to produce superior nanomaterials in the laboratory? These questions motivate the present study where we show that the nanocomposites in nature exhibit a generic mechanical structure in which the nanometer size of mineral particles is selected to ensure optimum strength and maximum tolerance of flaws (robustness). We further show that the widely used engineering concept of stress concentration at flaws is no longer valid for nanomaterial design.

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Taking Advantage of Disorder: Amorphous Calcium Carbonate and Its Roles in Biomineralization

2003-06-16

L. Addadi , Sefi Raz , Steve Weiner

Abstract Amorphous calcium carbonate (ACC) in its pure form is highly unstable, yet some organisms produce stable ACC, and cases are known in which ACC functions as a transient precursor … Abstract Amorphous calcium carbonate (ACC) in its pure form is highly unstable, yet some organisms produce stable ACC, and cases are known in which ACC functions as a transient precursor of more stable crystalline aragonite or calcite. Studies of biogenic ACC show that there are significant structural differences, including the observation that the stable forms are hydrated whereas the transient forms are not. The many different ways in which ACC can be formed in vitro shed light on the possible mechanisms involved in stabilization, destabilization, and transformation of ACC into crystalline forms of calcium carbonate. We show here that ACC is a fascinating form of calcium carbonate that may well be of much interest to materials science and biomineralization.

Design strategies in mineralized biological materials

1997-01-01

Stephen Weiner , Lia Addadi

Organisms have been producing mineralized skeletons for the past 550 million years. They have evolved many different strategies for improving these materials at almost all hierarchical levels from Ångstroms to … Organisms have been producing mineralized skeletons for the past 550 million years. They have evolved many different strategies for improving these materials at almost all hierarchical levels from Ångstroms to millimetres. Key components of biological materials are the macromolecules, which are intimately involved in controlling nucleation, growth, shaping and adapting mechanical properties of the mineral phase to function. One interesting tendency that we have noted is that organisms have developed several strategies to produce materials that have more isotropic properties. Much can still be learned from studying the principles of structure–function relations of biological materials. Some of this information may also provide new ideas for improved design of synthetic materials.

Controlling Mineral Morphologies and Structures in Biological and Synthetic Systems

2008-11-12

Fiona C. Meldrum , Helmut Cölfen

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTControlling Mineral Morphologies and Structures in Biological and Synthetic SystemsFiona C. Meldrum*† and Helmut Cölfen*‡View Author Information School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 … ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTControlling Mineral Morphologies and Structures in Biological and Synthetic SystemsFiona C. Meldrum*† and Helmut Cölfen*‡View Author Information School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 1TS, United Kingdom, and Max Planck Institute of Colloids and Interfaces, Colloid Chemistry, Am Mühlenberg, Forschungscampus Golm, D-14424 Potsdam, Germany* To whom correspondence should be addressed. E-mail: [email protected], [email protected]†University of Bristol.‡Max Planck Institute of Colloids and Interfaces.Cite this: Chem. Rev. 2008, 108, 11, 4332–4432Publication Date (Web):November 12, 2008Publication History Received10 April 2008Published online12 November 2008Published inissue 12 November 2008https://pubs.acs.org/doi/10.1021/cr8002856https://doi.org/10.1021/cr8002856review-articleACS PublicationsCopyright © 2008 American Chemical SocietyRequest reuse permissionsArticle Views22856Altmetric-Citations1185LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Crystal structure,Crystallization,Crystals,Morphology,Nanoparticles Get e-Alerts

The kinetics and mechanisms of amorphous calcium carbonate (ACC) crystallization to calcite, viavaterite.

2010-11-11

Juan Diego Rodriguez‐Blanco , Samuel Shaw , Liane G. Benning

The kinetics and mechanisms of nanoparticulate amorphous calcium carbonate (ACC) crystallization to calcite, viavaterite, were studied at a range of environmentally relevant temperatures (7.5–25 °C) using synchrotron-based in situ time-resolved … The kinetics and mechanisms of nanoparticulate amorphous calcium carbonate (ACC) crystallization to calcite, viavaterite, were studied at a range of environmentally relevant temperatures (7.5–25 °C) using synchrotron-based in situ time-resolved Energy Dispersive X-ray Diffraction (ED-XRD) in conjunction with high-resolution electron microscopy, ex situX-ray diffraction and infrared spectroscopy. The crystallization process occurs in two stages; firstly, the particles of ACC rapidly dehydrate and crystallize to form individual particles of vaterite; secondly, the vaterite transforms to calcitevia a dissolution and reprecipitation mechanism with the reaction rate controlled by the surface area of calcite. The second stage of the reaction is approximately 10 times slower than the first. Activation energies of calcite nucleation and crystallization are 73 ± 10 and 66 ± 2 kJ mol−1, respectively. A model to calculate the degree of calcite crystallization from ACC at environmentally relevant temperatures (7.5–40 °C) is also presented.

Deformation mechanisms in nacre

2001-09-01

R. Z. Wang , Zhigang Suo , A.G. Evans +2 more

On the mechanics of mother-of-pearl: A key feature in the material hierarchical structure

2006-10-03

François Barthelat , Haochun Tang , Pablo Zavattieri +2 more

On the Fracture Toughness of Advanced Materials

2009-03-04

Maximilien E. Launey , Robert O. Ritchie

Abstract Few engineering materials are limited by their strength; rather they are limited by their resistance to fracture or fracture toughness. It is not by accident that most critical structures, … Abstract Few engineering materials are limited by their strength; rather they are limited by their resistance to fracture or fracture toughness. It is not by accident that most critical structures, such as bridges, ships, nuclear pressure vessels and so forth, are manufactured from materials that are comparatively low in strength but high in toughness. Indeed, in many classes of materials, strength and toughness are almost mutually exclusive. From a fracture‐mechanics perspective, the ability of a microstructure to develop toughening mechanisms acting either ahead or behind the crack tip can result in resistance‐curve (R‐curve) behavior where the fracture resistance actually increases with crack extension; the implication here is that toughness is often developed primarily during crack growth and not for crack initiation. Biological materials are perfect examples of this; moreover, they offer microstructural design strategies for the development of new materials for structural applications demanding combinations of both strength and toughness.

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Control and Design Principles in Biological Mineralization

1992-02-01

Lia Addadi , Stephen Weiner

Abstract The control of crystal formation has been developed to a remarkable degree by many organisms. Oriented nucleation, control over crystal morphology, formation of unique composites of proteins and single … Abstract The control of crystal formation has been developed to a remarkable degree by many organisms. Oriented nucleation, control over crystal morphology, formation of unique composites of proteins and single crystals, and the production of ordered multicrystal arrays, are all well within the realm of biological capability. Understanding the control and design principles in biomineralization is a fascinating subject that may well contribute to the improved fabrication of synthetic materials on the one hand, and to the solution of many serious pathological problems involving mineralization, on the other.

Sacrificial bonds and hidden length dissipate energy as mineralized fibrils separate during bone fracture

2005-07-17

Georg E. Fantner , Tue Hassenkam , Johannes H. Kindt +7 more

Pre-nucleation clusters as solute precursors in crystallisation

2014-01-01

Denis Gebauer , Matthias Kellermeier , Julian D. Gale +2 more

We review evidence for phase separation<italic>via</italic>pre-nucleation clusters of the most common biominerals, as well as amino acids. We review evidence for phase separation<italic>via</italic>pre-nucleation clusters of the most common biominerals, as well as amino acids.

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The Role of Hydrothermal Synthesis in Preparative Chemistry

1985-12-01

A. Rabenau

Abstract “Hydrothermal synthesis” usually refers to heterogeneous reactions in aqueous media above 100°C and 1 bar. The previously common distinction between hydrothermal conditions below and pneumatolytic conditions above the critical … Abstract “Hydrothermal synthesis” usually refers to heterogeneous reactions in aqueous media above 100°C and 1 bar. The previously common distinction between hydrothermal conditions below and pneumatolytic conditions above the critical point is no longer made, since no discontinuities are observed upon exceeding the critical conditions. Under hydrothermal conditions, reactants otherwise difficult to dissolve go into solution as complexes, in whose formation water itself or very soluble “mineralizers” can participate. Thus, one can obtain the conditions of chemical transport reactions, [1] of which hydrothermal syntheses can be considered a special case. During recent decades in the geological sciences—in which the method is also historically rooted—it has received a strong impulse, whose effect on preparative solid state chemistry is discussed here.

THE MATERIAL BONE: Structure-Mechanical Function Relations

1998-08-01

Stephen Weiner , H. Daniel Wagner

▪ Abstract The term bone refers to a family of materials, all of which are built up of mineralized collagen fibrils. They have highly complex structures, described in terms of … ▪ Abstract The term bone refers to a family of materials, all of which are built up of mineralized collagen fibrils. They have highly complex structures, described in terms of up to 7 hierarchical levels of organization. These materials have evolved to fulfill a variety of mechanical functions, for which the structures are presumably fine-tuned. Matching structure to function is a challenge. Here we review the structure-mechanical relations at each of the hierarchical levels of organization, highlighting wherever possible both underlying strategies and gaps in our knowledge. The insights gained from the study of these fascinating materials are not only important biologically, but may well provide novel ideas that can be applied to the design of synthetic materials.

Molecular mechanistic origin of the toughness of natural adhesives, fibres and composites

1999-06-01

B. L. Smith , Tilman E. Schäffer , Mario Viani +7 more

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Stable Prenucleation Calcium Carbonate Clusters

2008-12-18

Denis Gebauer , Antje Völkel , Helmut Cölfen

Calcium carbonate forms scales, geological deposits, biominerals, and ocean sediments. Huge amounts of carbon dioxide are retained as carbonate ions, and calcium ions represent a major contribution to water hardness. … Calcium carbonate forms scales, geological deposits, biominerals, and ocean sediments. Huge amounts of carbon dioxide are retained as carbonate ions, and calcium ions represent a major contribution to water hardness. Despite its relevance, little is known about the precipitation mechanism of calcium carbonate, and specified complex crystal structures challenge the classical view on nucleation considering the formation of metastable ion clusters. We demonstrate that dissolved calcium carbonate in fact contains stable prenucleation ion clusters forming even in undersaturated solution. The cluster formation can be characterized by means of equilibrium thermodynamics, applying a multiple-binding model, which allows for structural preformation. Stable clusters are the relevant species in calcium carbonate nucleation. Such mechanisms may also be important for the crystallization of other minerals.

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Carbonate Identification and Genesis as Revealed by Staining

1966-01-01

J. A. D. Dickson

ABSTRACT Carbonate minerals are stained over a set period of time with alizarin red-S and potassium ferricyanide only if they will react with dilute hydrochloric acid solution, with which the … ABSTRACT Carbonate minerals are stained over a set period of time with alizarin red-S and potassium ferricyanide only if they will react with dilute hydrochloric acid solution, with which the stain is prepared. The rates of solution of carbonates in the acid control the intensity of color development. For calcite, the rate of solution varies with the optic orientation of the section. The speed of carbonate solution is changed if the acid concentration is altered, but only at concentrations of about 0.1 N is the optic orientation of calcite differentiated by the stain. Etching reduces thin section thickness and clarifies rock texture. Staining with alizarin red-S differentiates carbonate minerals into two groups. Aragonite, calcite, witherite, and cerussite, which dissolve rapidly in dilute hydrochloric acid, are stained, while dolomite, siderite, magnesite, and rhodochosite, which react much more slowly with the acid, remain unstained. The distribution of ferrous iron, as distinguished by staining with potassium ferricyanide, has proved to be highly significant in the genesis of cements. Ferrous iron can be introduced at any one stage in cementation, or repeatedly, forming zoned patterns. The paragenesis of zoned ferroan cements can be reconstructed after staining. Solution of the more soluble original constituents can sometimes be dated in relation to cementation. Ferroan calcite can be secondary in origin and is usually associated with replacement minerals.

Principles of Crystal Nucleation and Growth

2003-01-01

James J. De Yoreo

Research Article| January 03, 2003 Principles of Crystal Nucleation and Growth James J. De Yoreo; James J. De Yoreo Chemistry and Materials Science Directorate, Lawrence Livermore National Laboratory, Livermore, California … Research Article| January 03, 2003 Principles of Crystal Nucleation and Growth James J. De Yoreo; James J. De Yoreo Chemistry and Materials Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94551 U.S.A. Search for other works by this author on: GSW Google Scholar Peter G. Vekilov Peter G. Vekilov Department of Chemical Engineering, University of Houston, Houston, Texas 77204 U.S.A. Search for other works by this author on: GSW Google Scholar Author and Article Information James J. De Yoreo Chemistry and Materials Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94551 U.S.A. Peter G. Vekilov Department of Chemical Engineering, University of Houston, Houston, Texas 77204 U.S.A. Publisher: Mineralogical Society of America First Online: 03 Mar 2017 © The Mineralogical Society Of America Reviews in Mineralogy and Geochemistry (2003) 54 (1): 57–93. https://doi.org/10.2113/0540057 Article history First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation James J. De Yoreo, Peter G. Vekilov; Principles of Crystal Nucleation and Growth. Reviews in Mineralogy and Geochemistry 2003;; 54 (1): 57–93. doi: https://doi.org/10.2113/0540057 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyReviews in Mineralogy and Geochemistry Search Advanced Search In the most general sense, biomineralization is a process by which organisms produce materials solutions for their own functional requirements. Because so many biomineral products are derived from an initial solution phase and are either completely crystalline or include crystalline components, an understanding of the physical principles of crystallization from solutions is an important tool for students of biomineralization. However, crystal growth is a science of great breadth and depth, about which many extensive texts have been written. In addition, there are already other thorough reviews that specifically address the crystal growth field of study as it relates to biomineral... You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

Mesocrystals: Inorganic Superstructures Made by Highly Parallel Crystallization and Controlled Alignment

2005-07-20

Helmut Cölfen , Markus Antonietti

Controlled self-organization of nanoparticles can lead to new materials. The colloidal crystallization of non-spherical nanocrystals is a reaction channel in many crystallization reactions. With additives, self-organization can be stopped at … Controlled self-organization of nanoparticles can lead to new materials. The colloidal crystallization of non-spherical nanocrystals is a reaction channel in many crystallization reactions. With additives, self-organization can be stopped at an intermediary step-a mesocrystal-in which the primary units can still be identified. Mesocrystals were observed for various systems as kinetically metastable species or as intermediates in a crystallization reaction leading to single crystals with typical defects and inclusions. The control forces and mechanism of mesocrystal formation are largely unknown, but several mesocrystal properties are known. Mesocrystals are exiting examples of nonclassical crystallization, which does not proceed through ion-by-ion attachment, but by a modular nanobuilding-block route. This path makes crystallization more independent of ion products or molecular solubility, it occurs without pH or osmotic pressure changes, and opens new strategies for crystal morphogenesis.

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Mollusk Shell Formation: A Source of New Concepts for Understanding Biomineralization Processes

2005-11-28

Lia Addadi , Derk Joester , Fabio Nudelman +1 more

The biological approach to forming crystals is proving to be most surprising. Mollusks build their shells by using a hydrophobic silk gel, very acidic aspartic acid rich proteins, and apparently … The biological approach to forming crystals is proving to be most surprising. Mollusks build their shells by using a hydrophobic silk gel, very acidic aspartic acid rich proteins, and apparently also an amorphous precursor phase from which the crystals form. All this takes place in a highly structured chitinous framework. Here we present ideas on how these disparate components work together to produce the highly structured pearly nacreous layer of the mollusk shell.

Higher‐Order Organization by Mesoscale Self‐Assembly and Transformation of Hybrid Nanostructures

2003-05-28

Helmut Cölfen , Stephen Mann

Abstract The organization of nanostructures across extended length scales is a key challenge in the design of integrated materials with advanced functions. Current approaches tend to be based on physical … Abstract The organization of nanostructures across extended length scales is a key challenge in the design of integrated materials with advanced functions. Current approaches tend to be based on physical methods, such as patterning, rather than the spontaneous chemical assembly and transformation of building blocks across multiple length scales. It should be possible to develop a chemistry of organized matter based on emergent processes in which time‐ and scale‐dependent coupling of interactive components generate higher‐order architectures with embedded structure. Herein we highlight how the interplay between aggregation and crystallization can give rise to mesoscale self‐assembly and cooperative transformation and reorganization of hybrid inorganic–organic building blocks to produce single‐crystal mosaics, nanoparticle arrays, and emergent nanostructures with complex form and hierarchy. We propose that similar mesoscale processes are also relevant to models of matrix‐mediated nucleation in biomineralization.

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Thermodynamically Consistent Force Fields for the Assembly of Inorganic, Organic, and Biological Nanostructures: The INTERFACE Force Field

2012-12-31

Hendrik Heinz , Tzu‐Jen Lin , Ratan K. Mishra +1 more

The complexity of the molecular recognition and assembly of biotic-abiotic interfaces on a scale of 1 to 1000 nm can be understood more effectively using simulation tools along with laboratory … The complexity of the molecular recognition and assembly of biotic-abiotic interfaces on a scale of 1 to 1000 nm can be understood more effectively using simulation tools along with laboratory instrumentation. We discuss the current capabilities and limitations of atomistic force fields and explain a strategy to obtain dependable parameters for inorganic compounds that has been developed and tested over the past decade. Parameter developments include several silicates, aluminates, metals, oxides, sulfates, and apatites that are summarized in what we call the INTERFACE force field. The INTERFACE force field operates as an extension of common harmonic force fields (PCFF, COMPASS, CHARMM, AMBER, GROMACS, and OPLS-AA) by employing the same functional form and combination rules to enable simulations of inorganic-organic and inorganic-biomolecular interfaces. The parametrization builds on an in-depth understanding of physical-chemical properties on the atomic scale to assign each parameter, especially atomic charges and van der Waals constants, as well as on the validation of macroscale physical-chemical properties for each compound in comparison to measurements. The approach eliminates large discrepancies between computed and measured bulk and surface properties of up to 2 orders of magnitude using other parametrization protocols and increases the transferability of the parameters by introducing thermodynamic consistency. As a result, a wide range of properties can be computed in quantitative agreement with experiment, including densities, surface energies, solid-water interface tensions, anisotropies of interfacial energies of different crystal facets, adsorption energies of biomolecules, and thermal and mechanical properties. Applications include insight into the assembly of inorganic-organic multiphase materials, the recognition of inorganic facets by biomolecules, growth and shape preferences of nanocrystals and nanoparticles, as well as thermal transitions and nanomechanics. Limitations and opportunities for further development are also described.

Synthetic nacre by predesigned matrix-directed mineralization

2016-08-19

Li‐Bo Mao , Huai‐Ling Gao , Hong‐Bin Yao +7 more

Although biomimetic designs are expected to play a key role in exploring future structural materials, facile fabrication of bulk biomimetic materials under ambient conditions remains a major challenge. Here, we … Although biomimetic designs are expected to play a key role in exploring future structural materials, facile fabrication of bulk biomimetic materials under ambient conditions remains a major challenge. Here, we describe a mesoscale "assembly-and-mineralization" approach inspired by the natural process in mollusks to fabricate bulk synthetic nacre that highly resembles both the chemical composition and the hierarchical structure of natural nacre. The millimeter-thick synthetic nacre consists of alternating organic layers and aragonite platelet layers (91 weight percent) and exhibits good ultimate strength and fracture toughness. This predesigned matrix-directed mineralization method represents a rational strategy for the preparation of robust composite materials with hierarchically ordered structures, where various constituents are adaptable, including brittle and heat-labile materials.

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Functional gradients and heterogeneities in biological materials: Design principles, functions, and bioinspired applications

2017-04-25

Zengqian Liu , Marc A. Meyers , Zhefeng Zhang +1 more

Mechanical Design in Organisms

1976-09-01

H. L. Cromroy , S. A. Wainwright , W. D. Biggs +2 more

Effects of temperature, pressure, and hydration on the microstructural characteristics and mechanical properties of calcite

2025-06-25

Xiaoyi Zhou , Qiuqi Chen , Xin Tang +5 more | Frontiers in Chemistry

Geotechnical geological disasters occur frequently in China. Especially under complex environmental conditions, the failure mode of rock and the change mechanism of its mechanical properties are not clear. Although some … Geotechnical geological disasters occur frequently in China. Especially under complex environmental conditions, the failure mode of rock and the change mechanism of its mechanical properties are not clear. Although some progress has been made in recent studies on the physical and chemical properties of rocks and the microscopic mechanism of action, there is still a lack of systematic understanding of the change mechanism of calcite under different temperature, pressure and humidity conditions. In this paper, the influence of these environmental factors on the expansion behavior and elastic modulus of rock is deeply analyzed by constructing a calcite supercell model. The results show that the lattice parameters a, b and c of calcite increase by 0.45%, 0.45% and 0.44%, respectively, when the temperature increases from 300 K to 1000 K. At the same time, the bulk modulus, shear modulus and Young‘s modulus decreased by 6.45%, 3.63% and 3.92%, respectively. When the pressure increases from 0.1 GPa to 0.5 GPa, the volume of calcite crystal decreases by 1.10%, while the bulk modulus, shear modulus and Young’s modulus increase by 2.74%, 9.36% and 8.66%, respectively. The bulk modulus, shear modulus and Young‘s modulus decreased by 15.6%, 18.5% and 18.1%, respectively, when anhydrous calcite was transformed into 50 water molecules. This study clarifies the degradation mechanism of calcite under the action of temperature, pressure and hydration, and provides an important theoretical basis and guidance for the prevention and control of geotechnical geological disasters.

Biosurfactant type and introduction order impact the morphology of biological CaCO3 during the MICP process

2025-06-25

Weida Wang , Mingtao Zhu , Chunbin Zou +3 more | World Journal of Microbiology and Biotechnology

The effect of butanediol on the characteristics of calcium carbonate produced by direct mineral carbonation from gypsum in ammonia solution

2025-06-24

Temesgen Abeto Amibo , Donata Konopacka-Łyskawa , Marcin Łapiński +1 more | Journal of environmental chemical engineering

Machine Learning-Based Prediction of Scale Inhibitor Efficiency in Oilfield Operations

2025-06-21

Seyed Hossein Hashemi , Farshid Torabi | Processes

Water injection is widely recognized as one of the most important operational approaches for enhanced oil recovery in oilfields. However, this process faces significant challenges due to the formation of … Water injection is widely recognized as one of the most important operational approaches for enhanced oil recovery in oilfields. However, this process faces significant challenges due to the formation of sulfate and carbonate mineral scales caused by high salinity in both injected water and formation water. To address this issue, the use of mineral scale inhibitors has emerged as a valuable solution. In this study, we evaluated the performance of seven machine learning algorithms (Gradient Boosting Machine; k-Nearest Neighbors; Decision Tree; Random Forest; Linear Regression; Neural Network; and Gaussian Process Regression) to predict inhibitor efficiency. The models were trained on a comprehensive dataset of 661 samples (432 for training; 229 for testing) with 66 features including temperature; concentrations of various ions (sodium; calcium, magnesium; barium; strontium; chloride; sulfate; bicarbonate; carbonate, etc.), and inhibitor dosage levels (DTPMP, PPCA, PBTC, EDTMP, BTCA, etc.). The results showed that GPR achieved the highest prediction accuracy with R2 = 0.9608, followed by Neural Network (R2 = 0.9230) and Random Forest (R2 = 0.8822). These findings demonstrate the potential of machine learning approaches for optimizing scale inhibitor performance in oilfield operations

Calcium carbonate amorphous-to-crystalline transition drives complex precipitation patterns in confined fluids

2025-06-19

XU Jian-ping , Matthew T. Balhoff | Journal of Colloid and Interface Science

Microbial Carbonate Formation In The Hyperalkaline Gravière Spring (Samail Ophiolite, Sultanate of Oman)

2025-06-18

Bernhard Pracejus , Aliya Al-Ansari , Khamis Al-Dhafri +3 more | Geomicrobiology Journal

Effect of Dual-Site Co-Cultivation on Spectral Characteristics and Trace Element Enrichment in Akoya Pearls

2025-06-18

Peiqi Zhou , Geng Li , Fabian Dietmar Schmitz | Minerals

This study systematically investigates for the first time the effects of dual-site co-cultivation on spectral characteristics and trace element enrichment in marine-cultured Akoya pearls from Beihai, China. Akoya pearls were … This study systematically investigates for the first time the effects of dual-site co-cultivation on spectral characteristics and trace element enrichment in marine-cultured Akoya pearls from Beihai, China. Akoya pearls were cultured over a one-year period, with the final 40-day stage designated as the terminal phase. During this period, two experimental groups of pearl oysters were established: Group Y remained in Beihai for continued local cultivation and harvest, while Group B was transferred to Weihai, Shandong Province, for terminal-stage farming under different thermal conditions. A series of comparative analyses were performed using Fourier-transform infrared (FTIR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, Raman spectroscopy, X-ray fluorescence (XRF), and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The FTIR results revealed distinct differences between the two groups in the distribution of amide and polysaccharide functional groups, particularly around 1643 cm−1 and 1100 cm−1. The UV-Vis spectra of Group B displayed characteristic absorption bands at 430 nm and 460 nm, associated with the organic matrix of the nacre. Raman spectroscopy further indicated a higher abundance of organic-related vibrational features in Group B. Additionally, both XRF and LA-ICP-MS analyses consistently showed significant differences in the concentrations and distributions of trace elements, particularly copper (Cu), cobalt (Co), and zinc (Zn). The findings demonstrate that the dual-site co-cultivation mode significantly impacts both the organic composition and trace element enrichment patterns in seawater Akoya pearls. This research provides valuable references for optimizing environmental parameters in pearl cultivation processes.

Morphogenesis and chemical composition of spicules in Doridina (Gastropoda: Nudibranchia)

2025-06-18

Ekaterina D. Nikitenko , Anna L. Mikhlina , A. A. Piryazev +1 more | Zoologischer Anzeiger

The mechanism of IGF-AKT pathway promoting mantle biomineralization in Hyriopsis cumingii

2025-06-17

Peng Xiao , Yige Chen , Shijun Liu +4 more | International Journal of Biological Macromolecules

The role of the membrane in the hen’s egg as a model for increasing the toughness of engineered brittle materials

2025-06-17

T Raphael Woida , Nina Graupner , David Labonte +1 more | Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials

Nacre-Inspired Chitosan/CaCO3 Films with High Transparency and Underwater Superoleophobic Property for Efficient Oil/Water Separation

2025-06-13

Tao Ye , Yulan Huang , Qi Li +7 more | Langmuir

Numerous natural architectures achieve multifunctionality through mild formation processes. Natural nacre is composed of about 90 wt % calcium carbonate aragonite flakes and 5 wt % chitin, exhibiting excellent mechanical … Numerous natural architectures achieve multifunctionality through mild formation processes. Natural nacre is composed of about 90 wt % calcium carbonate aragonite flakes and 5 wt % chitin, exhibiting excellent mechanical properties, optical transmittance, and underwater superoleophobicity. In this work, a nacre-inspired biomineralized film with high transparency and mechanically robust underwater superoleophobicity was synthesized through Mg2+-PAA coordinated regulation under ambient conditions. The nacre-inspired film has light transmittance (exceeding 80%), hardness (1.71 ± 0.08 GPa), Young's modulus (40.9 ± 0.3 GPa), and contact angle of underwater-oil droplets (151.2° ± 1.8°) comparable to natural nacre. Notably, this substrate-independent material can be directly mineralized on diverse surfaces, including plastics, glass, and polymer meshes, while maintaining efficient oil-water separation capability. By deconstructing the multiscale structure of biomaterials, this study establishes a novel paradigm for fabricating multifunctional composites through environmentally benign processes.

Bio-inspired multifunctional disruptors of calcium oxalate crystallization

2025-06-05

Doyoung Kim , Vraj P. Chauhan , Bryan G. Alamani +6 more | Nature Communications

Calcium mineralization in biological and geological systems is often regulated by (macro)molecules enriched with anionic functional moieties. Relatively few studies have examined the effects of phosphate-based modifiers that are integral … Calcium mineralization in biological and geological systems is often regulated by (macro)molecules enriched with anionic functional moieties. Relatively few studies have examined the effects of phosphate-based modifiers that are integral in calcification underlying human bone formation and pathological diseases. Here we mimic posttranslational phosphorylated moieties of a biologically-active inhibitor protein and demonstrate that polyphosphates and phosphonates suppress calcium oxalate nucleation, tailor solvate crystal structure, and irreversibly inhibit crystal growth in ways that significantly deviate from commonly investigated carboxylate-rich modulators of biomineralization. The most potent modifiers exhibit an uncommon dual mode of action, wherein nucleation is suppressed by altering prenucleation clusters and crystal surface growth is impeded irreversibly by inducing lattice strain. Once crystal surfaces are exposed to modifiers, recrystallization is severely restricted. This exemplifies the uniqueness and efficiency of phosphates wherein their multiple modes of action are promising characteristics for designing de novo biologically-inspired molecules as mineralization regulators.

Sự biến đổi chất lượng của phi lê các nhóm màu thịt cá tra (Pangasianodon hypophthalmus) trong quá trình bảo quản lạnh bằng nước đá

2025-06-04

Nguyễn Lê Anh Đào , T. H. Duong , Thị Kim Duyên Huỳnh +1 more | Can Tho University Journal of Science

Nghiên cứu được thực hiện nhằm khảo sát sự biến đổi chất lượng của phi lê cá tra (Pangasianodon hypophthalmus) có màu sắc khác nhau trong quá trình bảo quản … Nghiên cứu được thực hiện nhằm khảo sát sự biến đổi chất lượng của phi lê cá tra (Pangasianodon hypophthalmus) có màu sắc khác nhau trong quá trình bảo quản lạnh bằng nước đá. Phi lê cá (màu trắng, hồng, vàng) được thu từ nhà máy chế biến thủy sản, vận chuyển về phòng thí nghiệm, bao gói trong túi PE (Polyethylene) và bảo quản lạnh bằng nước đá. Việc đánh giá chất lượng phi lê cá được thực hiện vào các ngày 0, 4, 8 và 12 thông qua phân tích các chỉ tiêu như đo màu, tổng vi sinh vật hiếu khí (TVC), cảm quan, đo cấu trúc, pH, khả năng giữ nước (WHC), peroxide value (PV) và TBARs. Kết quả cho thấy độ sáng L*, giá trị a* và b* đạt giá trị cao nhất lần lượt ở phi lê cá màu trắng, hồng và vàng. Nghiệm thức phi lê nhóm màu thịt trắng cho kết quả của các chỉ tiêu chất lượng tốt hơn so với nghiệm thức nhóm màu thịt hồng và vàng. Tất cả nghiệm thức đều được duy trì chất lượng về mặt cảm quan và vi sinh (<6 log10CFU/g) trong khoảng thời gian 8 ngày bảo quản lạnh bằng nước đá.

Data-driven remaining useful life estimation of a fouled plate heat exchanger

2025-06-03

Jure Berce , Mattia Bucci , Matevž Zupančič +2 more | Applied Thermal Engineering

Asp-NH4OH-CO2-H2O-Titanium gypsum five-element three-phase system to prepare stabilized spherical vaterite calcium carbonate

2025-06-01

Hongxia Wei , Lanying Wang , Kun Zou +1 more | Journal of Physics Conference Series

Abstract Traditional carbonation methods have significant difficulties in synthesizing pure vaterite. Therefore, this paper proposes a bio-inspired synthesis method to prepare vaterite. The results indicate that aspartic acid (Asp), acting … Abstract Traditional carbonation methods have significant difficulties in synthesizing pure vaterite. Therefore, this paper proposes a bio-inspired synthesis method to prepare vaterite. The results indicate that aspartic acid (Asp), acting as a crystal-form inducer, significantly promotes the formation of vaterite. However, excessive Asp leads to noticeable agglomeration of the carbonation product particles. Asp adsorbs onto the vaterite surface to inhibit its transformation into the thermodynamically stable calcite. Moreover, Asp adsorbed on specific calcite crystal faces reduces surface energy, suppresses the growth of these faces, and induces the formation of irregular hexahedral calcite, which gradually grows into vaterite. Additionally, NH 4 OH concentration significantly affects the carbonation reaction time and product properties. When the NH 4 OH concentration exceeds 2.67 mol/L, the carbonation reaction is incomplete, with some calcite remaining unconverted to vaterite. The experiments showed that vaterite after alkali washing could remain stable in an aqueous solution for up to 12 hours. This study provides a novel approach and method for preparing highly stable vaterite through a bio-inspired method.

Thermal Fatigue Resistance of Vertebrate Bone: A Comparative Study of Endothermic and Ectothermic Species Using Resonant Ultrasound Spectroscopy

2025-06-01

Parker R. Brewster , Jake E. Akins , Casey Holycross +1 more | Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials

Role of sodium stearate in the preparation of anhydrous magnesium carbonate from nesquehonite

2025-06-01

Yulian Wang , Hanghuan Yu , Haoran Sun +6 more | Materials Chemistry and Physics

Preparation of nanodispersed calcium carbonate for thixotropic systems by the carbonation method

2025-06-01

L.Yu. Bodachivska | Voprosy Khimii i Khimicheskoi Tekhnologii

A micellar model for the preparation of a nanodispersed carbonate core for thixotropic systems is proposed. According to this model, the carbonation process occurs in an inverted microemulsion system, where … A micellar model for the preparation of a nanodispersed carbonate core for thixotropic systems is proposed. According to this model, the carbonation process occurs in an inverted microemulsion system, where the internal dispersed phase – a water–methanol mixture containing calcium hydroxide – is integrated with the oil–toluene dispersion medium (petroleum or synthetic oils) into a unified system by a synthesized biosurfactant. This is followed by bubbling carbon dioxide through the calcium hydroxide-containing phase, resulting in the formation of a grease thickener that functions as an emulsifier-stabilizer. The resulting calcium carbonate crystallites exhibit ellipsoidal and spherical shapes, and include vaterite and calcite polymorphic modifications, with particle sizes ranging from 6–18 nm to 34–51 nm, as confirmed by X-ray diffraction, infrared spectroscopy, and scanning electron microscopy. The developed calcium-based grease compositions using the synthesized emulsifier-stabilizer demonstrate enhanced protective and tribological properties, as well as improved oxidative and colloidal stability. These greases are intended for lubricating friction units in machines and mechanical systems.

Mechanisms of Calcium Carbonate Scaling Regulated by Single and Multi-Ion Interactions: Insights from Experiments and Molecular Dynamics Simulations

2025-06-01

Danlei Chen , Yan Shen , Wen Liu +2 more | Journal of environmental chemical engineering

Iron-rich diet enhances the damage resistance of bamboo rat tooth enamel

2025-06-01

Yu‐Feng Meng , YinBo Zhu , Bo Yang +7 more | Matter

Deciphering the Heterogeneity of Calcified Structure in Different Entheses via High-resolution Characterization Techniques

2025-06-01

Ziyang Lin , Ziyang Yuan , Tao Zhang +7 more | Acta Biomaterialia

The microarchitectural variability in the echinoid skeleton: a 3D geometrical and stiffness characterization of Paracentrotus lividus

2025-06-01

Valentina Perricone , Pasquale Cesarano , Mainak Deb +5 more | Royal Society Open Science

The sea urchin skeleton is a lightweight yet load-bearing hierarchical structure composed of calcitic plates with a species-specific three-dimensional (3D) trabecular meshwork known as stereom. Interestingly, the stereom architecture is … The sea urchin skeleton is a lightweight yet load-bearing hierarchical structure composed of calcitic plates with a species-specific three-dimensional (3D) trabecular meshwork known as stereom. Interestingly, the stereom architecture is extremely complex and variable in different basic types, each one characterized by a unique geometry and structural behaviours. The present study provides an in-depth analysis of the microarchitectural variability in the sea urchin Paracentrotus lividus . Accordingly, micro-CT scans, image analysis, 3D modelling, mean intercept length and linear elastic finite-element analysis were conducted to provide the first comprehensive insights on the structural variability of the different stereom types, their anisotropy and their mechanical behaviour calculated for tensile and shear loading. The findings demonstrate distinct structural adaptations, with anisotropic stereoms specializing in directional stress transfer and more isotropic stereoms facilitating a uniform stress distribution. These results provide critical insights into the mechanical functions of stereom variability and support bioinspired designs for lightweight and strong materials.

High-performance, Eco-friendly Calcium Carbonate Cement via Alginate-Mediated Biomimetic Mineralisation

2025-06-01

Olívia de Souza Heleno Santos , Wendy Tian , Kwong Ming Tse +1 more | Composites Part B Engineering

Fine-Tuning of Material Properties by Catch Bonds

2025-06-01

Md Foysal Rabbi , Gijsje H. Koenderink , Yuval Mulla +1 more | Acta Biomaterialia

Cross and unique stress adaptation strategies of the polyextremophile Natranaerobius thermophilus to individual high salt, alkaline pH, and elevated temperature

2025-06-01

Qinghua Xing , Xinyi Tao , Qingping Hu +6 more | Journal of Proteomics

Steel slag circulation for SO2 absorption enhances calcium leaching in the preparation of calcium carbonate

2025-06-01

Yarong Li , Hongqiang Liao , Yanxia Guo | Separation and Purification Technology

Biomimetic carbon storage: Carbon dioxide absorption and mineralisation via a sodium alginate-glycerol-NaOH aqueous system

2025-05-31

Olivia de Souza Heleno Santos , Wendy Tian , Kwong Ming Tse +1 more | Next Materials

Treatment of silicate Ion with Bacillus subtilis bacteria in demineralization-water/steam cycles in power plants

2025-05-31

Deniz Bozkurt , Aslıhan Dalmaz , S. Durmuş | Turkish Journal of Analytical Chemistry

Inorganic silica and various mineral deposits are particularly important in the process waters of power plants. The presence of these inorganic species, especially silica, poses many challenges for process water … Inorganic silica and various mineral deposits are particularly important in the process waters of power plants. The presence of these inorganic species, especially silica, poses many challenges for process water applications in power plants. If silica in process waters is not controlled, it forms hard, difficult, and dangerous deposits for process water. Silica formation and accumulation cannot be prevented by many conventional methods and scale inhibitors. In this study, Bacillus subtilis bacteria was used to minimize silica formation in the process water of power plants. For this purpose, many different parameters were optimized in the system steps. The results obtained are promising for the use of silica removal in process water applications. In addition, the use of Bacillus subtilis bacteria for the treatment of process water will provide significant economic benefits. Therefore, this study will make an important contribution to the literature and will be very advantageous in terms of cost for various industrial organizations that face silica problems in process waters.

Fabrication of Calcite Calcium Carbonate from Eggshells Biogenic Waste Through Carbonation Method

2025-05-31

Mariyam Mariyam , Siti Sunarintyas , Leny Yuliatun +2 more | Jurnal Kimia VALENSI

Calcium carbonate derived from eggshells has significant potential for use in drug delivery systems, pharmaceutical, food, catalyst, cement, and concrete industries. Although eggshell waste is non-toxic, its excessive accumulation in … Calcium carbonate derived from eggshells has significant potential for use in drug delivery systems, pharmaceutical, food, catalyst, cement, and concrete industries. Although eggshell waste is non-toxic, its excessive accumulation in the environment may contribute to ecological issues. Colonizing pathogenic bacteria in unprocessed eggshell waste poses a potential health risk. The present study outlines the production of precipitated calcium carbonate (PCC) from eggshell waste through a calcination-carbonation process, offering a sustainable approach to its utilization. The calcination was carried out at 900 ºC. The carbonation process was performed in an HNO3 solution, and the NH3 solution was under-treated for 60 minutes. The results exhibited that the precipitated calcium carbonate (PCC) had a purity of 95.2% CaO. It possessed predominantly the calcite phase with a rhombohedral crystal system, as confirmed by the XRD analysis. The crystallite size of PCC was 109.5 nm, measured using the Debye-Scherrer equation. The phase composition of PCC was 99.3% calcite, 0.5% vaterite, and 0.2% aragonite. FTIR analysis further corroborated this data by showing a sharp and unsplit peak at 1419 cm-1, demonstrating the presence of a calcite phase. SEM images revealed a cubic-like morphology, a characteristic of the calcite form of calcium carbonate (CaCO3). The synthesized calcium carbonate in this study holds potential for applications in dental materials and as fillers in polymer matrices for food packaging.

Simultaneous removal of fluorine and sulfate impurities from phosphoric concentrate using CaCO3 and Ca(H2PO4)2

2025-05-31

Young-Jun Oh , Israiljon Shamshidinov , Rixsitilla Yunusali Najmiddinov | Korean Journal of Soil Science and Fertilizer

Biological Armors – Evolution, Materials, and Bioinspiration

2025-05-30

Karly E. Cohen , Cassandra M. Donatelli , Andrew Schulz +3 more | Integrative and Comparative Biology

Abstract Biological armors have evolved across taxa as structural adaptations that provide protection from external forces while balancing mobility, metabolic cost, and functional trade-offs. These systems, from arthropod exoskeletons to … Abstract Biological armors have evolved across taxa as structural adaptations that provide protection from external forces while balancing mobility, metabolic cost, and functional trade-offs. These systems, from arthropod exoskeletons to vertebrate osteoderms, illustrate how natural selection shapes materials and morphology to optimize defense without compromising essential movement and physiological processes. The evolution of armor is constrained by biomechanical limits, as seen in the structural rigidity of heavily plated organisms and the flexible composites that integrate protective and dynamic properties. Methods used to study these systems—CT scanning, histology, finite element analysis, and mechanical testing—directly influence how the biological principles of armor are defined and understood. These approaches reveal the material properties and functional constraints of armored structures that can be translated into engineered applications through bioinspiration. Bioinspired designs informed by natural armor have led to innovations in impact-resistant materials, flexible ceramics, and modular protective systems. By integrating biomechanics, materials science, and evolutionary biology, this manuscript examines how armor evolves, functions, and informs bioinspired design.

Diffusion-Controlled Formation and Differentiation of Calcite and Vaterite in a Hydrogel

2025-05-30

K. Jeong , Yu Seob Shin , Sung Ho Yang | Crystal Growth & Design