A Highly Accurate, Stretchable Touchpad for Robust, Linear, and Stable Tactile Feedback,Advanced Materials Technologies

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A Highly Accurate, Stretchable Touchpad for Robust, Linear, and Stable Tactile Feedback
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2020-01-15 , DOI: 10.1002/admt.201900864
Ruomei Shao _{1,

2} , Chunnan Wang _{1,

3} , Guiqiang Wang _{1,

3} , Jingru Zhao _{1,

2} , Shuqing Sun _{1,

2,

3}

Affiliation

A stretchable and steady performance of human–machine interfaces and localized tactile perception is a broad concerning problem. Existing tactile sensors and touchpads claim to be stretchable for location detection failing to offer a location with uniformity during inevitable flexible movements, as well as linearity. The fabrication of a highly stretchable and transparent touch sensor, which is made of hydrogels and PDMS, could simultaneously and precisely determine location and pressure while being stretched or unstretched. It is noteworthy that the sensor introduces a new structure of resistant‐system into stretchable sensors, which needs only four electrodes in 3D helical structure without sacrificing linearity. A few drops of silicone oil are added to the interfaces to prevent the dehydration of the hydrogels, which is a common problem leading to device failure. In the same time, the transparency is improved significantly from 84.3% to 96%. Its interface application is demonstrated by practically using it for drawing, dialing numbers, calculating, and playing cards. Finite element analysis based on Ogden models indicates that the sensor shows instant response without delay, which is vital for super‐elastic materials based electronics.

中文翻译：

高精度，可伸展的触摸板，可提供稳定，线性和稳定的触觉反馈

人机界面的可伸缩性和稳定性能以及局部触觉感知是一个广泛关注的问题。现有的触觉传感器和触摸板声称可伸缩以进行位置检测，无法在不可避免的灵活移动过程中提供均匀的位置以及线性。由水凝胶和PDMS制成的高度可拉伸且透明的触摸传感器的制造可以同时且精确地确定被拉伸或未拉伸时的位置和压力。值得注意的是，该传感器在可拉伸传感器中引入了一种新的电阻系统结构，该传感器仅需要四个3D螺旋结构的电极，而不会牺牲线性度。在界面上加入几滴硅油以防止水凝胶脱水，这是导致设备故障的常见问题。同时，透明度从84.3％显着提高到96％。它的界面应用已通过实际用于绘图，拨号，计算和打牌来演示。基于Ogden模型的有限元分析表明，传感器显示了即时响应而没有延迟，这对于基于超弹性材料的电子产品至关重要。

更新日期：2020-01-15

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