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Joule Heat Welding of Ultrathin Metallic Wires and its Application for Producing Functionality

update:2018-12-19
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Features
For producing a new functionality from metallic micro and nano matarials, the welding and cutting technologies for small scale materials utilizing Joule heat has been developed (Fig. 1). A constant direct current is supplied to the system, where the free ends of two metallic wires are contacted, and the ends are successfully welded together in self-completed manner. This technology is also useful for manipulating a small scale materials.

Targeted Application(s)/Industry
Joule heat welding technology enables us to produce the functional elements on the electrode chips, e.g., a free-standing micro-ring and very-thin thermoelectric element (Fig. 2). Moreover, we have developed the technique for characterizing the physical properties of small scale materials (Fig. 3). We hope to conduct collaborative research with a willing company for a practical application of this technology in industry.

Researchers

Graduate School of Engineering

TOHMYOH, Hironori , Associate Professor
Doctor of Engineering

Keywords

Related Information

Patent
Japanese Patent No. 5124770, Techniques and apparatus for joining nanomaterials.

Publication
Self-completed Joule heat welding of ultrathin Pt wires (Physical Review B, 80, 2009, 155403)
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