TY  - JOUR
AU  - Tan, Zihan
AU  - Yang, Mingcheng
AU  - Ripoll, Marisol
TI  - Microfluidic Pump Driven by Anisotropic Phoresis
JO  - Physical review applied
VL  - 11
IS  - 5
SN  - 2331-7019
CY  - College Park, Md. [u.a.]
PB  - American Physical Society
M1  - FZJ-2019-02870
SP  - 054004
PY  - 2019
AB  - Fluid flow along microchannels can be induced by keeping opposite walls at different temperatures and placing elongated tilted pillars inside the channel. The driving force for this fluid motion arises from the anisotropic thermophoretic effect of the elongated pillars that generates a force parallel to the walls and perpendicular to the temperature gradient. The force is not determined by the thermophilic or thermophobic character of the obstacle surface, but by the geometry and the thermophoretic anisotropy of the obstacle. Via mesoscale hydrodynamic simulations, we investigate the pumping properties of the device as a function of the channel geometry and pillar surface properties. Applications as fluidic mixers and fluid alternators are also outlined, together with the potential use of all these devices to harvest waste heat energy. Furthermore, similar devices can also be built employing diffusiophoresis or electrophoresis.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000466614800001
DO  - DOI:10.1103/PhysRevApplied.11.054004
UR  - https://juser.fz-juelich.de/record/862601
ER  -