Soft-matter sensor for proximity, tactile and pressure detection
Soft-matter sensor for proximity, tactile and pressure detection
复制标题
用于接近、触觉和压力检测的软物质传感器
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
C. Majidi
中科院分区：
文献类型：
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作者：
R. Rocha;P. Lopes;A. T. Almeida;M. Tavakoli;C. Majidi
利用液态金属(LM)进行软物质测量的努力主要集中在通过测量嵌入在软弹性体中的液态金属电路的电容或电阻的变化来进行压力、应变和弯曲测量。在这里，我们展示了LM电子器件可用于将压力传感与接近检测和远程手指跟踪传感模式相结合，这些模式以前在软电子皮肤(E-Skin)中没有演示过。这是通过一种新颖的结构实现的，该结构由9个电容式传感器排列成两层，并放置在螺旋形压力传感器的下方。E-Skin由共晶镓-铟(Egain)LM合金和铂硫化EcoFlex 0030弹性体组成。当手指在传感器上方移动时，多模式传感器能够检测手指的接近程度和运动，并能够检测手指接触时的触摸和压力。通过比较嵌入式LM电路的电容和电阻的变化来区分接近感测和接触压力。在厘米尺度的原型上进行的测量表明，接近感应的范围为8.7厘米，最大接触压力为110千帕。
Efforts in soft-matter sensing with liquid metal (LM) have largely focused on pressure, strain, and bend sensing by measuring changes in capacitance or resistance of LM circuits embedded in a soft elastomer. Here, we show that LM electronics can be used to combine pressure sensing with proximity detection and remote finger tracking — sensing modalities not previously demonstrated in a soft electronic skin (E-Skin). This is accomplished with a novel architecture composed of 9 capacitive sensors arranged in two layers and placed below a spiral-shaped pressure transducer. The E-skin is composed of eutectic gallium-indium (EGaIn) LM alloy and Pt-cured EcoFlex 0030 elastomer. The multi-modal sensor is able to detect the proximity and motion of a finger as it moves above the sensor and is able to detect touch and pressure once the finger comes into contact. Proximity sensing and contact pressure are distinguish by comparing changes in capacitance and resistance of the embedded LM circuitry. Measurements on a cm-scale prototype suggest proximity sensing with a range of 8.7 cm and maximum contact pressure of 110 kPa.
DOI：
10.3171/2013.9.peds12595
发表时间：
2014
期刊：
Journal of neurosurgery. Pediatrics
影响因子：
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作者：
P. Codd;Arabagi Veaceslav;A. Gosline;P. Dupont
通讯作者：
P. Codd;Arabagi Veaceslav;A. Gosline;P. Dupont