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Rectification of heat current in Corbino geometry
Zhixing Zou1, Giulio Casati2,3, Giuliano Benenti2,4,5
1Department of Physics and Fujian Provincial Key Laboratory of Low Dimensional Condensed Matter Physics, <a href="https://ror.org/00mcjh785">Xiamen University</a>, Xiamen 361005, Fujian, China.
Physical Review. E
|July 18, 2024
Summary
We analytically prove the ballistic thermal rectification effect (BTRE) in a Corbino disk. Thermal rectification efficiency depends on temperature ratios and disk geometry, enabling perfect BTRE and heat flow manipulation.
Area of Science:
- * Condensed matter physics
- * Nanoscale heat transfer
- * Thermal transport phenomena
Background:
- * Thermal rectification is crucial for controlling heat flow.
- * The Corbino disk, an annular geometry, offers unique thermal properties.
- * Previous studies have explored thermal rectification in various systems.
Purpose of the Study:
- * To analytically prove the ballistic thermal rectification effect (BTRE) in a Corbino disk.
- * To derive and analyze the thermal rectification efficiency (RE).
- * To investigate methods for enhancing and controlling BTRE and thermal diode effects.
Main Methods:
- * Analytical derivation of thermal rectification efficiency.
- * Mathematical modeling of heat flow in an annular geometry.
- * Analysis of the influence of temperature baths and geometric parameters.
Main Results:
- * Thermal rectification efficiency is a product of temperature-dependent and geometry-dependent functions.
- * Perfect BTRE is achievable by increasing temperature ratios and the outer-to-inner radius ratio.
- * Introducing a potential barrier significantly improves RE, with potential for reversing the thermal diode effect.
Conclusions:
- * The Corbino disk geometry provides a flexible platform for nanoscale heat flow manipulation.
- * BTRE can be precisely controlled through temperature and geometric parameters.
- * The findings offer a pathway to novel thermal management devices.
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