文献类型：期刊文献

英文题名：Convertible Thermal Meta-Structures via Hybrid Manufacturing of Stereolithography Apparatus 3D Printing and Surface Metallization for Thermal Flow Manipulation

作者：Li, Bo[1,2];Zhang, Jianrui[1,3];Deng, Tianxiang[3];Ren, Facai[4]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Addit Mfg & Intelligent Equipment Res Inst, Shanghai 200237, Peoples R China;[3]Shanghai Collaborat Innovat Ctr High End Equipment, Shanghai 200237, Peoples R China;[4]Shanghai Inst Special Equipment Inspection & Tech, Shanghai 200062, Peoples R China

年份：2023

卷号：15

期号：1

外文期刊名：POLYMERS

收录：;EI(收录号：20230213378576);WOS:【SCI-EXPANDED(收录号:WOS:000910223600001)】；

基金：This research was funded by [Research Project of Shanghai Municipal Administration for Market Regulation, in China] grant number [2021-22], [Carbon Dioxide Peaking & Carbon Neutrality Fund from Shanghai Science and Technology Innovation Action Plan, in China] grant number [21DZ1207800] and [Fundamental Research Funds for Central Universities in China] grant number [JKG01221508].

语种：英文

外文关键词：thermal metamaterial; 3D printing; thermal manipulation; thermal cloak; thermal concentration

摘要：For manipulating heat flow according to human desire, thermal metamaterial structures (meta-structures) have attracted growing interest. Based on the transformation thermotics and the effective medium approximation theory, we designed and fabricated a convertible thermal meta-structural device to demonstrate that multiple different heat-flow manipulations could be conducted using a single thermal meta-structural device. The convertible meta-structures were designed by discretizing a two-dimensional plane and separating multiple square unit modules with stripe-shaped dissimilar materials of the Polydimethylsiloxane (PDMS) and solid resin with surface metallized copper (Cu). The convertible thermal meta-structure device with a relatively high geometric accuracy was fabricated via a proposed hybrid manufacturing path of "Stereolithography Apparatus (SLA) 3D printing-electroless plating-electroplating-thermally insulated packaging". The thermal manipulation features were numerically simulated and preliminarily verified by experimental testing. Using multiple dispersed square unit modules to replace an annular region of the thermal meta-structure exhibited different thermal flow functions, including thermal cloak, thermal concentration, thermal rotation, and thermal dispersion, through the unique geometric design of the heat-flow transfer direction within each module. By rotating each square unit module at a specific angle and arranging the modules, similar to a "jigsaw puzzle", the convertibility among different thermal manipulation functions was achieved. This path is anticipated to provide a new strategy for multifunctional meta-structures in thermo-physics and its potential engineering applications.