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首页> 外文期刊>ACS nano >High-sensitivity strain gauge based on a single wire of gold nanoparticles fabricated by stop-and-go convective self-assembly
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High-sensitivity strain gauge based on a single wire of gold nanoparticles fabricated by stop-and-go convective self-assembly

机译：基于走走对流自组装法制备的基于单线金纳米颗粒的高灵敏度应变仪

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摘要

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.
机译：通过对流自组装（CSA）的新颖变体，获得了基于紧密堆积的14 nm胶态金纳米颗粒的单线的高灵敏度应变仪。这种称为停停走走CSA的CSA模式可以制造仅几微米宽的纳米粒子线，这些纳米线之间的距离可以很容易地在几十到几百微米之间调整。通过将纳米颗粒从悬浮液直接沉积到柔性聚对苯二甲酸乙二醇酯薄膜上，而无需任何光刻预图案化，即可在单个步骤中获得纳米颗粒丝。当连接在两个电极之间时，此类单纳米粒子线可充当微型电阻应变仪。这些单线应变仪表现出的高灵敏度，可重复性和鲁棒性使其极有希望集成到微机电系统或高分辨率应变图中。

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