TY  - JOUR
AU  - Shen, Mingren
AU  - Ye, Fangfu
AU  - Liu, Rui
AU  - Chen, Ke
AU  - Yang, Mingcheng
AU  - Ripoll, Marisol
TI  - Chemically driven fluid transport in long microchannels
JO  - The journal of chemical physics
VL  - 145
IS  - 12
SN  - 1089-7690
CY  - Melville, NY
PB  - American Institute of Physics
M1  - FZJ-2016-06077
SP  - 124119
PY  - 2016
AB  - Chemical gradients maintained along surfaces can drive fluid flows by diffusio-osmosis, which become significant at micro- and nano-scales. Here, by means of mesoscopic simulations, we show that a concentration drop across microchannels with periodically inhomogeneous boundary walls can laterally transport fluids over arbitrarily long distances along the microchannel. The driving field is the secondary local chemical gradient parallel to the channel induced by the periodic inhomogeneity of the channel wall. The flow velocity depends on the concentration drop across the channel and the structure and composition of the channel walls, but it is independent of the overall channel length. Our work thus presents new insight into the fluid transport in long microchannels commonly found in nature and is useful for designing novel micro- or nano-fluidic pumps.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000385562600021
DO  - DOI:10.1063/1.4963721
UR  - https://juser.fz-juelich.de/record/820810
ER  -