Please use this identifier to cite or link to this item:

Passive Nanofluidic Diode Using Non-Uniform Nanochannels

Authors Mo, Jingwen HKUST affiliated (currently or previously)
Li, Chu HKUST affiliated (currently or previously)
Li, Long HKUST affiliated (currently or previously)
Wang, Jun
Li, Zhigang View this author's profile
Issue Date 2016
Source Physics of Fluids , v. 28, (8), August 2016, article number 082005
Summary In this work, we propose a nanofluidic diode for simple fluids using non-uniform nanochannels. Molecular dynamics simulations show that the fluidic diode allows water flows in the forward direction and blocks flows in the backward direction in a wide range of pressure drops. The unidirectional water flows are owing to the distinct activation pressures in different directions. In the forward (converging) direction, the activation pressure is small because of the relatively low capillary pressure and the water coalescence at the exit. In the backward direction, the activation pressure is high due to the high infiltration pressure. The pressure drop range for the fluidic diode can be varied by modifying the surface wettability, channel height, and/or the tilt angle of the channel. The fluidic diode can be used for flow control in integrated micro- and nanofluidic devices.
ISSN 1070-6631
Language English
Format Article
Access View full-text via DOI
View full-text via Scopus
View full-text via Web of Science