Soft Magnetic Powdery Sensor for Tactile Sensing
Soft Magnetic Powdery Sensor for Tactile Sensing
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DOI：
10.3390/s19122677
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发表时间：
2019-06-02
期刊：
影响因子：
3.9
通讯作者：
Sugano, Shigeki
中科院分区：
文献类型：
--
作者：
Nagahama, Shunsuke;Migita, Kayo;Sugano, Shigeki
软电阻式触觉传感器是下一代柔性电子产品中的多功能设备。我们开发了一种新型的软电阻触觉传感器称为软磁粉末传感器（软MPS），并评估其响应特性。软-MPS包括铁磁性粉末，其在磁场中定向后固定在液体树脂如聚二甲基硅氧烷（PDMS）中。在对传感器施加外力时，颗粒之间的相对距离发生变化，从而影响其电阻。由于铁磁性粉末从初始状态开始接触，因此与导电粉末分散在柔性材料中的传统电阻传感器相比，它们具有检测小接触力的能力。通过控制磁场的布局，传感器单元可以制成任何形状。制造了具有不同硬度的可以检测小力的软MPSs。软MPS可用于检测机器人手/手臂或超灵敏触摸屏设备中的碰撞。
Soft resistive tactile sensors are versatile devices with applications in next-generation flexible electronics. We developed a novel type of soft resistive tactile sensor called a soft magnetic powdery sensor (soft-MPS) and evaluated its response characteristics. The soft-MPS comprises ferromagnetic powder that is immobilized in a liquid resin such as polydimethylsiloxane (PDMS) after orienting in a magnetic field. On applying an external force to the sensor, the relative distance between particles changes, thereby affecting its resistance. Since the ferromagnetic powders are in contact from the initial state, they have the ability to detect small contact forces compared to conventional resistive sensors in which the conductive powder is dispersed in a flexible material. The sensor unit can be made in any shape by controlling the layout of the magnetic field. Soft-MPSs with different hardnesses that could detect small forces were fabricated. The soft-MPS could be applied to detect collisions in robot hands/arms or in ultra-sensitive touchscreen devices.