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

用焦耳热熔化两根细金属丝的接触部分，将两根金属丝连接在一起的纳米焊接的科学基础已经确立。从焦耳热焊接的结构、电学和力学特性分析可知，焦耳热焊接过程损伤小，焊缝质量与母材相当。此外，利用不同金属焊缝周围的塞贝克效应，实现了功能纳米热电器件，即极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.