期刊
NANO-MICRO LETTERS
卷 9, 期 4, 页码 -出版社
SHANGHAI JIAO TONG UNIV PRESS
DOI: 10.1007/s40820-017-0139-3
关键词
Laser direct writing; Copper circuit; Stretchable sensor; Laser reduction
资金
- National Natural Science Foundation of China [51575016]
- Beijing Oversea High-Level Talent Project and strategic research Grant of Beijing Natural Science Foundation P.R. China [KZ20141000500]
- China Scholarship Council [20160654015]
Stretchable electronic sensing devices are defining the path toward wearable electronics. High-performance flexible strain sensors attached on clothing or human skin are required for potential applications in the entertainment, health monitoring, and medical care sectors. In this work, conducting copper electrodes were fabricated on polydimethylsiloxane as sensitive stretchable microsensors by integrating laser direct writing and transfer printing approaches. The copper electrode was reduced from copper salt using laser writing rather than the general approach of printing with pre-synthesized copper or copper oxide nanoparticles. An electrical resistivity of 96 mu Omega cm was achieved on 40-mu m-thick Cu electrodes on flexible substrates. The motion sensing functionality successfully demonstrated a high sensitivity and mechanical robustness. This in situ fabrication method leads to a path toward electronic devices on flexible substrates.
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