Establishment of Scientific Basis for Nano-Welding and Fabrication of Nano-Thermoelectric Devices

建立了纳米焊接的科学基础，即两根细金属丝的接触部分用焦耳热熔化，两根金属丝连接在一起。通过对焦耳热焊接头的组织、电性能和力学性能的分析，发现该焊接工艺损伤小，焊缝质量与母材相当。此外，利用异种金属焊缝周围的塞贝克效应实现了功能齐全的纳米热电器件，即超薄热电偶和纳米发电机电路，用于未来的应用。

The scientific basis for nano-welding, where the contacting portion of two thin metallic wires are melted with Joule heat and two wires are joined together, has been established. From the structural, electrical and mechanical characterizations of the Joule heat welds, it was found that the welding process was low-damage and the welds were the equal of the base metal in quality. Furthermore, functional, nano-thermoelectric devices utilizing the Seebeck effect around the dissimilar metal welds, i. e., very thin thermocouple and the circuit for nano-generator, were realized for future applications.