材料科学
选择性激光烧结
电阻式触摸屏
可穿戴计算机
激光器
银纳米粒子
导电体
光电子学
图层(电子)
纳米技术
基质(水族馆)
拉伤
纳米颗粒
复合材料
烧结
计算机科学
光学
物理
内科学
地质学
嵌入式系统
海洋学
医学
计算机视觉
作者
Hyesu Jo,Jisu Park,Ha-Yoon Lim,Gil-Yong Lee
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2023-12-07
卷期号:6 (24): 22998-23011
被引量:3
标识
DOI:10.1021/acsanm.3c04386
摘要
A wearable strain sensor was fabricated by sintering silver (Ag) nanoparticles (NPs) with an ultraviolet laser on a semicured poly(dimethylsiloxane) (PDMS) substrate. The semicured PDMS enabled the NPs to effectively penetrate through the PDMS surface, resulting in a thick layer with a sintered conductive pattern that contributed to reliable and stable resistive responses upon application of mechanical strain. Microstructures and cross sections of the laser-sintered NPs were investigated with varying laser power and scan speeds during the sintering process. A sensing mechanism is proposed based on the findings. The electromechanical responses of the strain sensors were characterized in terms of the process conditions. The response times and long-term cyclic responses of the strain sensors were evaluated. Finally, a wearable strain sensor was designed and fabricated for the detection of various finger and hand motions. A series of experimental demonstrations are presented that capture various gestures and grasping motions of the fingers according to the sensor prototype. The techniques and results of this research will aid the future development of flexible sensors, wearable devices, and related engineering and scientific applications.
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