期刊
ACS NANO
卷 5, 期 9, 页码 7137-7143出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn201833y
关键词
convective self-assembly; colloidal gold nanoparticles; flexible polymer substrate; strain gauge
类别
资金
- French National Agency (ANR) [ANR-09-NIRT-004]
High-sensitivity strain gauges based on single wires of close-packed 14 nm colloidal gold nanoparticles are obtained by a novel variant of convective self-assembly (CSA). This CSA mode named stop-and-go CSA enables the fabrication of nanoparticle wires only a few micrometers wide, separated by distances that can be easily tuned over tens to hundreds of micrometers. Nanoparticle wires are obtained in a single step by direct deposition of nanoparticles from suspensions onto flexible polyethylene terephthalate films, without any lithographic prepatterning. When connected between two electrodes, such single nanoparticle wires function as miniature resistive strain gauges. The high sensitivity, repeatability, and robustness demonstrated by these single-wire strain gauges make them extremely promising for integration into micro-electromechanical systems or for high-resolution strain mapping.
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