期刊
ADVANCED FUNCTIONAL MATERIALS
卷 23, 期 42, 页码 5292-5296出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201203589
关键词
stretchable electronics; soft electronics; gallium-indium alloys; selective wetting; polymer processing
类别
资金
- National Science Foundation [NSF DMR-0820484]
- Wyss Institute for Biologically Inspired Engineering
A fabrication method is introduced that utilizes masked deposition and selective wetting to produce hyperelastic electronic circuits that are composed of a thin elastomer film embedded with microchannels of liquid-phase gallium-indium (Ga-In) alloy. This method exploits the low melting-point and controllable wetting dynamics of Ga-In alloys, as well as the ability for Ga-In alloys to form irregularly-shaped, free-standing, micrometer-scale structures via gallium surface oxidation. Masked deposition eliminates the need for manual injection filling, which enables certain geometries that cannot be produced by injection and allows for the automated, high-volume production of Ga-In based liquid-embedded elastomer electronics (LE3). With this approach, LE3 circuits can be produced with isolated features that have planar dimensions of less than 200 m and edge-to-edge feature separations as small as 25 m.
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