Multifunctional Mechanical Sensors for Versatile Physiological Signal Detection

• DOI: 10.1021/acsami.8b16237
• Publication Date: 2018-11-22T10:56:12Z
• Authors: Yu Pang; Zhen Yang; Xiaolin Han; Jinming Jian; Yuxing Li; Xuefeng Wang; Yancong Qiao; Yi Yang; Tian-Ling Ren
• Keywords: Gauge factor; Strain gauge

Recently, flexible and wearable mechanical sensors have attracted great attention because of their potential applications in monitoring various physiological signals. However, conventional rarely both pressure strain sensing abilities that can meet the demands subtle large human motion detection. Besides, with tunable sensitivity or measuring range are also essential for practical applications. Herein, graphene ink dip-coating method merits time saving, low cost, scale was used to fabricate foam-structured performance. Because high elasticity styrene butadiene rubber (SBR) substrates stacked flakes, exhibit a gauge factor (GF) specific The sensor shows GF 2.02 kPa–1 up 172 kPa, displays 250 86%. On one hand, detections vital signals small change were demonstrated by its flexibility sensitivity. another excellent ability detect motions including bending neck, finger, wrist, knee. Interestingly, capability recognizing 26 letters written hand. working mechanism based on contact area variation investigated morphology evolution resistance model. We suppose would be promising electronics healthcare activity future.