Journal Article

FZJ-2019-02870

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Microfluidic Pump Driven by Anisotropic Phoresis

Tan, Z. (Corresponding author)FZJ* ; Yang, M. ; Ripoll, M.FZJ*

2019
American Physical Society College Park, Md. [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/22155  doi:10.1103/PhysRevApplied.11.054004

Abstract: 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.

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Contributing Institute(s):

1. Theorie der Weichen Materie und Biophysik (ICS-2)
2. Weiche Materie (ICS-3)
3. JARA - HPC (JARA-HPC)

Research Program(s):

1. 551 - Functional Macromolecules and Complexes (POF3-551) (POF3-551)
2. Thermophoretic microswimmers: from single particle to collective properties (jics22_20151101) (jics22_20151101)

Appears in the scientific report 2019

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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