Volume 119, Number 6, September 2017
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||28 November 2017|
Local rectification of heat flux
1 Departmento de Física Aplicada I, Universidad del País Vasco, UPV- EHU - Bilbao, Spain
2 Departmento de Química-Física, Universidad del País Vasco, UPV-EHU - Bilbao, Spain
3 Department of Physics, University College Cork - Cork, Ireland
Received: 1 August 2017
Accepted: 10 November 2017
We present a chain-of-atoms model where heat is rectified, with different fluxes from the hot to the cold baths located at the chain boundaries when the temperature bias is reversed. The chain is homogeneous except for boundary effects and a local modification of the interactions at one site, the “impurity”. The rectification mechanism is due here to the localized impurity, the only asymmetrical element of the structure, apart from the externally imposed temperature bias, and does not rely on putting in contact different materials or other known mechanisms such as grading or long-range interactions. The effect survives if all interaction forces are linear except the ones for the impurity.
PACS: 44.10.+i – Heat conduction / 45.50.Jf – Few- and many-body systems
© EPLA, 2017
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