Anomalous Hydrodynamic Interaction in a Quasi-Two-Dimensional Suspension
Anomalous Hydrodynamic Interaction in a Quasi-Two-Dimensional Suspension
We study the correlated Brownian motion of micron-sized particles suspended in water and confined between two plates. The hydrodynamic interaction between the particles exhibits three anomalies. (i) The transverse coupling is negative; i.e., particles exert "antidrag" on one another when moving perpendicular to their connecting line. (ii) The interaction decays …