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Ionic Liquids: Length Scale Selects Directionality of Droplets on Vibrating Pillar Ratchet (Adv. Mater. Interfaces 9/2014)
Author(s) -
Agapov Rebecca L.,
Boreyko Jonathan B.,
Briggs Dayrl P.,
Srijanto Bernadeta R.,
Retterer Scott T.,
Collier C. Patrick,
Lavrik Nickolay V.
Publication year - 2014
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201470054
Subject(s) - pillar , materials science , tilt (camera) , wetting , nanotechnology , directionality , ratchet , length scale , ionic bonding , optics , composite material , mechanics , geometry , ion , mechanical engineering , chemistry , work (physics) , physics , biology , engineering , genetics , mathematics , organic chemistry
N. V. Lavrik and co‐workers demonstrate in article 1400337 that arrays of tilted pillars, such as the one in the cover image, exhibit asymmetric wettability under dynamic conditions. When vibrated vertically, such asymmetrically structured surfaces induce directional transport of droplets at room temperature. Depending on the pillar length scale, droplets move in either the same direction as the pillar tilt or against the pillar tilt.