Thermal rectification induced by Wenzel–Cassie wetting state transition on nano-structured solid–liquid interfaces  

作　　者：李海洋 王军 夏国栋 Haiyang Li;Jun Wang;Guodong Xia(MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation,Beijing Key Laboratory of Heat Transfer and Energy Conversion,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation,Beijing Key Laboratory of Heat Transfer and Energy Conversion,Beijing University of Technology,Beijing 100124,China

出　　处：《Chinese Physics B》2023年第5期520-526,共7页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.51976002);the Beijing Nova Program of Science and Technology(Grant No.Z191100001119033)。

摘　　要：Thermal rectification refers to the phenomenon by which the magnitude of the heat flux in one direction is much larger than that in the opposite direction.In this study,we propose to implement the thermal rectification phenomenon in an asymmetric solid–liquid–solid sandwiched system with a nano-structured interface.By using the non-equilibrium molecular dynamics simulations,the thermal transport through the solid–liquid–solid system is examined,and the thermal rectification phenomenon can be observed.It is revealed that the thermal rectification effect can be attributed to the significant difference in the interfacial thermal resistance between Cassie and Wenzel states when reversing the temperature bias.In addition,effects of the liquid density,solid–liquid bonding strength and nanostructure size on the thermal rectification are examined.The findings may provide a new way for designs of certain thermal devices.

关 键 词：thermal rectification wetting transition interfacial thermal resistance solid–liquid interfaces 

分 类 号：TK124[动力工程及工程热物理—工程热物理]