Thermoelectric devices allow direct conversion between electricity and heat,which include thermoelectric generators(TEGs)and thermoelectric coolers(TECs)based on the Seebeck and Peltier effects,respectively[1].Despite...Thermoelectric devices allow direct conversion between electricity and heat,which include thermoelectric generators(TEGs)and thermoelectric coolers(TECs)based on the Seebeck and Peltier effects,respectively[1].Despite suffering from low energy conversion efficiency,thermoelectric devices have played an irreplaceable role in space exploration and solid-state cooling due to their advantages of compactness,fast response,and absence of moving parts and refrigerant.In particular,near-room temperature(250–400 K)TECs play a key role in the precise temperature control of lidar.展开更多
Abstract Thermal ground planes, or planar heat pipes, can provide highly effective heat transfer by utilizing phase change of an encapsulated fluid. In this article, a flexible thermal ground plane （FTGP） was fabric...Abstract Thermal ground planes, or planar heat pipes, can provide highly effective heat transfer by utilizing phase change of an encapsulated fluid. In this article, a flexible thermal ground plane （FTGP） was fabricated using poly- mer materials. Kapton was employed as a casing material while micropatterned SU-8 was used to provide both a liquid wicking structure and pillars to support the casing over a vapor core. An ultra-thin TiO2 film was deposited over the SU-8 and Kapton via atomic layer deposition, which acted as both a moisture barrier and a hydrophilic coating on polymer surfaces. The assembled FTGP has a thickness of 0.30 mm, an active area of 20 mm~ 60 mm, heater area of 20 mm x 10 ram, and can operate with a heat load up to 9.54 W, with an effective thermal con- ductivity up to 541 W/（m K）.展开更多
基金This work was supported by the National Key Research and Development Program of China(2022YFB3803900 and 2018YFA0702100).
文摘Thermoelectric devices allow direct conversion between electricity and heat,which include thermoelectric generators(TEGs)and thermoelectric coolers(TECs)based on the Seebeck and Peltier effects,respectively[1].Despite suffering from low energy conversion efficiency,thermoelectric devices have played an irreplaceable role in space exploration and solid-state cooling due to their advantages of compactness,fast response,and absence of moving parts and refrigerant.In particular,near-room temperature(250–400 K)TECs play a key role in the precise temperature control of lidar.
基金supported by a grant from the Intelligence Community Postdoctoral Research Fellowship Program through funding from the Office of the Director of National Intelligencefunding from the Defense Advanced Research Projects Agency (DARPA) Thermal Ground Planes project (Grant N6601-08-2006)the State of Colorado Advanced Industries Accelerator program
文摘Abstract Thermal ground planes, or planar heat pipes, can provide highly effective heat transfer by utilizing phase change of an encapsulated fluid. In this article, a flexible thermal ground plane （FTGP） was fabricated using poly- mer materials. Kapton was employed as a casing material while micropatterned SU-8 was used to provide both a liquid wicking structure and pillars to support the casing over a vapor core. An ultra-thin TiO2 film was deposited over the SU-8 and Kapton via atomic layer deposition, which acted as both a moisture barrier and a hydrophilic coating on polymer surfaces. The assembled FTGP has a thickness of 0.30 mm, an active area of 20 mm~ 60 mm, heater area of 20 mm x 10 ram, and can operate with a heat load up to 9.54 W, with an effective thermal con- ductivity up to 541 W/（m K）.
基金supported by Shanghai Agriculture Applied Technology Development Program of China(2019-02-08-00-08F01124)the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(51521004)the National Natural Science Foundation of China(52036002)。
