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Editor-in-Chief: Peter Gregory, Deputy Editors: Mary De Vita, Duoduo Liang, Lorna Stimson
Online ISSN: 1521-4095
Associated Title(s): Advanced Biosystems, Advanced Electronic Materials, Advanced Energy Materials, Advanced Engineering Materials, Advanced Functional Materials, Advanced Healthcare Materials, Advanced Materials Interfaces, Advanced Materials Technologies, Advanced Optical Materials, Advanced Science, Advanced Sustainable Systems, Global Challenges, Laser & Photonics Reviews, Particle & Particle Systems Characterization, Small Methods, Small
Microfluidics: Controlling Liquid Drops with Texture Ratchets (Adv. Mater. 12/2012)
Controlled vibration selectively propels multiple microliter-sized drops along texture ratchets: microstructured tracks that rectify oscillations of the three-phase contact line into asymmetric pinning forces that propel each drop in the direction of higher pinning, as investigated by K. F. Böhringer and co-workers on page 1545. This superimposed time-lapse image depicts two pairs of 5 μL dyed water drops traveling and finally merging simultaneously on regular and upside-down texture ratchets molded in polydimethylsiloxane elastomer.