Fabrication and Electric Field-Driven Active Propulsion of Patchy Microellipsoids.

ABSTRACT: Active colloids are a synthetic analogue of biological microorganisms that consume external energy to swim through viscous fluids. Such motion requires breaking the symmetry of the fluid flow in the vicinity of a particle; however, it is challenging to understand how surface and shape anisotropies of the colloid lead to a particular trajectory. Here, we attempt to deconvolute the effects of particle shape and surface anisotropy on the propulsion of model ellipsoids in alternating current (AC) electric fields. We first introduce a simple process for depositing metal patches of various shapes on the surfaces of ellipsoidal particles. We show that the shape of the metal patch is governed by the assembled structure of the ellipsoids on the substrate used for physical vapor deposition. Under hi

SUBMITTER: Lee JG 

PROVIDER: S-EPMC8279480 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature