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Applied Physics Letters / Volume 99 / Issue 23 / INTERDISCIPLINARY AND GENERAL PHYSICS

Appl. Phys. Lett. 99, 234105 (2011); http://dx.doi.org/10.1063/1.3666818 (3 pages)

Planar jumping-drop thermal diodes

Jonathan B. Boreyko, Yuejun Zhao, and Chuan-Hua Chen

Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA

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(Received 28 July 2011; accepted 15 November 2011; published online 9 December 2011)

Phase-change thermal diodes rectify heat transport much more effectively than solid-state ones, but are limited by either the gravitational orientation or one-dimensional configuration. Here, we report a planar phase-change diode scalable to large areas with an orientation-independent diodicity of over 100, in which water/vapor is enclosed by parallel superhydrophobic and superhydrophilic plates. The thermal rectification is enabled by spontaneously jumping dropwise condensate which only occurs when the superhydrophobic surface is colder than the superhydrophilic surface.

© 2011 American Institute of Physics

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KEYWORDS and PACS

Keywords

condensation, diodes, hydrophilicity, hydrophobicity, rectification, thermal conductivity

PACS

  • 07.20.-n

    Thermal instruments and apparatus

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3666818

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

    W. Kobayashi, Y. Teraoka, and I. Terasaki, Appl. Phys. Lett. 95, 171905 (2009)APPLAB000095000017171905000001.

    C. Chen, Q. Cai, C. Tsai, C. Chen, G. Xiong, Y. Yu, and Z. Ren, Appl. Phys. Lett. 90, 173108 (2007)APPLAB000090000017173108000001.

    J. Boreyko and C. Chen, Phys. Rev. Lett. 103, 184501 (2009).


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