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ABSTRACT:
SUBMITTER: Cavallaro M
PROVIDER: S-EPMC3248516 | biostudies-literature | 2011 Dec
REPOSITORIES: biostudies-literature
Cavallaro Marcello M Botto Lorenzo L Lewandowski Eric P EP Wang Marisa M Stebe Kathleen J KJ
Proceedings of the National Academy of Sciences of the United States of America 20111219 52
Capillarity can be used to direct anisotropic colloidal particles to precise locations and to orient them by using interface curvature as an applied field. We show this in experiments in which the shape of the interface is molded by pinning to vertical pillars of different cross-sections. These interfaces present well-defined curvature fields that orient and steer particles along complex trajectories. Trajectories and orientations are predicted by a theoretical model in which capillary forces an ...[more]