title: 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.
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China. mcyang@iphy.ac.cn kechen@iphy.ac.cn.
authors.forename: Mingcheng
authors.initials: M
authors.lastname: Yang
authors.forename: Rui
authors.initials: R
authors.lastname: Liu
authors.forename: Marisol
authors.initials: M
authors.lastname: Ripoll
authors.forename: Ke
authors.initials: K
authors.lastname: Chen