Journal
NANOSCALE
Volume 6, Issue 22, Pages 13550-13554Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr03990d
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Funding
- Institute of Physics, Chinese Academy of Sciences, China
- The Recruitment Program of Global Youth Experts in China
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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.
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