Inkjet‐Printed Soft Resistive Pressure Sensor Patch for Wearable Electronics Applications,Advanced Materials Technologies

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Inkjet‐Printed Soft Resistive Pressure Sensor Patch for Wearable Electronics Applications
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2019-11-13 , DOI: 10.1002/admt.201900717
Li‐Wei Lo _{1,

2} , Hongyang Shi ₃ , Haochuan Wan ₁ , Zhihao Xu ₁ , Xiaobo Tan ₃ , Chuan Wang _{1,

2}

Affiliation

Soft pressure sensors may find a wide range of applications in soft robotics, biomedical devices, and smart wearables. Here, an inkjet‐printed resistive pressure sensor that offers high sensitivity and can be fabricated using a very simple process is reported. The device is composed of a conductive silver nanoparticle (AgNP) layer directly printed onto a polydimethylsiloxane substrate and encapsulated by a VHB tape. The pressure is measured through change in electrical resistance caused by pressure‐induced strain in the printed AgNP thin film. The influence of substrate stiffness and thickness on the sensitivity and achieved sensors with an optimized configuration that exhibit highly repeatable response with a sensitivity of up to 0.48 kPa⁻¹ is systematically studied. It is further demonstrated that such a printed soft sensor patch is capable of measuring arterial pulse waveforms or detecting acoustic vibrations under various sound pressure levels. With its simple and low‐cost fabrication process and high sensitivity, the inkjet‐printed resistive pressure sensor is promising for future biomedical and smart wearable device applications.

中文翻译：

喷墨印刷的可穿戴电子应用的软阻压力传感器贴片

软压力传感器可以在软机器人，生物医学设备和智能可穿戴设备中找到广泛的应用。此处报道了一种喷墨打印的电阻式压力传感器，该传感器具有很高的灵敏度，并且可以使用非常简单的工艺来制造。该设备由直接印在聚二甲基硅氧烷基材上并由VHB胶带封装的导电银纳米颗粒（AgNP）层组成。压力是通过印刷的AgNP薄膜中由压力引起的应变引起的电阻变化来测量的。基板刚度和厚度对灵敏度的影响，采用优化配置的传感器实现了高度可重复的响应，灵敏度高达0.48 kPa ^-1被系统地研究。进一步证明，这种印刷的软传感器贴片能够测量动脉脉搏波形或检测各种声压级下的声振动。凭借其简单，低成本的制造工艺和高灵敏度，喷墨打印电阻式压力传感器有望在未来的生物医学和智能可穿戴设备应用中获得应用。

更新日期：2020-01-13

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