Issue 22, 2014

A microscale thermophoretic turbine driven by external diffusive heat flux

Abstract

We propose a theoretical prototype of a micro-scale turbine externally driven by diffusive heat flux without the need for macroscopic particle flux, which is in sharp contrast to conventional turbines. The prototypes are described analytically and validated by computer simulations. Our results indicate that a micro-scale turbine composed of anisotropic blades can rotate unidirectionally in an external temperature gradient due to the anisotropic thermophoresis effect. The rotational direction and speed depend on the temperature gradient, the geometry and the thermophoretic properties of the turbine. The proposed thermophoretic turbines can be experimentally realized and implemented on micro-devices such as computer-chips to recover waste heat or to facilitate cooling.

Graphical abstract: A microscale thermophoretic turbine driven by external diffusive heat flux

Supplementary files

Article information

Article type
Paper
Submitted
15 Jul 2014
Accepted
08 Sep 2014
First published
10 Sep 2014

Nanoscale, 2014,6, 13550-13554

A microscale thermophoretic turbine driven by external diffusive heat flux

M. Yang, R. Liu, M. Ripoll and K. Chen, Nanoscale, 2014, 6, 13550 DOI: 10.1039/C4NR03990D

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