Optical rotation of ferrofluid on a horizontal substrate by Marangoni
and thermomagnetic forces
Optical rotation of ferrofluid on a horizontal substrate by Marangoni
and thermomagnetic forces
Light-actuation enables non-contact, precise, and flexible manipulation of liquids in microfluidics and liquid robots. However, it has long been a challenge to achieve optical rotation of liquid on a horizontal substrate because of the weak force of light. Here, we report, for the first time, the laser-induced rotation of macroscopic …