Stress-deconcentrated ultrasensitive strain sensor with hydrogen-bonding-tuned fracture resilience for robust biomechanical monitoring
Yizhuo Yang,Wenjie Tang,Jinyi Wang,Ruiqiang Li,Ping Yang,Shisheng Chen,Yuehui Yuan,Jing-feng Xu,Xueyang Ren,Shancheng Yu,Hao Wu,Yunfan Zhou,Leili Zhai,Xiaodong Shao,Zenan Chen,Benhui Hu +15 more
TLDR
In this article , a stress-deconcentrated ultra-sensitive strain (SDUS) sensor with ultrahigh sensitivity (gauge factor up to 2.3 × 106) and a wide working range (0% −50%) via incorporating notch-insensitive elastic substrate and micro-crack-tunable conductive layer was developed.Abstract:
Recently, rapid advances in flexible strain sensors have broadened their application scenario in monitoring of various mechanophysiological signals. Among various strain sensors, the crack-based strain sensors have drawn increasing attention in monitoring subtle mechanical deformation due to their high sensitivity. However, early generation and rapid propagation of cracks in the conductive sensing layer result in a narrow working range, limiting their application in monitoring large biomechanical signals. Herein, we developed a stress-deconcentrated ultrasensitive strain (SDUS) sensor with ultrahigh sensitivity (gauge factor up to 2.3 × 106) and a wide working range (0%–50%) via incorporating notch-insensitive elastic substrate and micro-crack-tunable conductive layer. Furthermore, the highly elastic amine-based polymer-modified polydimethylsiloxane substrate without obvious hysteresis endows our SDUS sensor with a rapid response time (2.33 ms) to external stimuli. The accurate detection of the radial pulse, joint motion, and vocal cord vibration proves the capability of SDUS sensor for healthcare monitoring and human-machine communications. read more
Citations
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Journal ArticleDOI
High-Performance Strain Sensors Based on Au/Graphene Composite Films with Hierarchical Cracks for Wide Linear-Range Motion Monitoring.
TL;DR: Li et al. as discussed by the authors proposed a facile strategy to fabricate stretchable strain sensors based on Au/graphene composite films (AGCFs) with hierarchical cracks and demonstrate their superior sensing performances.
Journal ArticleDOI
Crack engineering boosts the performance of flexible sensors
Sergio A. Cabrera,Frank Hase +1 more
TL;DR: In this paper , the authors summarized the sensing mechanisms of the flexible sensors based on the crack disconnection-reconnection process and discussed the performance characteristics and applications of the crack-based flexible sensors with various materials, design structures, and crack generation procedures.
Peer ReviewDOI
Crack engineering boosts the performance of flexible sensors
TL;DR: In this article , the authors summarized the sensing mechanisms of the flexible sensors based on the crack disconnection-reconnection process and discussed the performance characteristics and applications of the crack-based flexible sensors with various materials, design structures, and crack generation procedures.
Journal ArticleDOI
In-Memory Tactile Sensor with Tunable Steep-Slope Region for Low-Artifact and Real-Time Perception of Mechanical Signals.
Shisheng Chen,Xueyang Ren,Jing-feng Xu,Yuehui Yuan,Jing Shi,Huaxu Ling,Yizhuo Yang,Wenjie Tang,Fangzhou Lu,Xiangqing Kong,Benhui Hu +10 more
TL;DR: In this paper , an in-memory tactile sensor (IMT) with a dynamically adjustable steep-slope region (SSR) and nanocavity-induced nonvolatility (retention time >1000 s) is proposed on the basis of a machano-gated transistor, which directly transduces the tactile stimuli to various states of the channel.
References
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Ultrasensitive mechanical crack-based sensor inspired by the spider sensory system
Daeshik Kang,Peter V. Pikhitsa,Yong Whan Choi,Chanseok Lee,Sung Soo Shin,Linfeng Piao,Byeonghak Park,Kahp-Yang Suh,Tae Il Kim,Mansoo Choi +9 more
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Journal ArticleDOI
Carbonized Silk Fabric for Ultrastretchable, Highly Sensitive, and Wearable Strain Sensors
Chunya Wang,Xiang Li,Enlai Gao,Muqiang Jian,Kailun Xia,Qi Wang,Zhi Ping Xu,Tian-Ling Ren,Yingying Zhang +8 more
TL;DR: A carbonized plain-weave silk fabric is fabricated into wearable and robust strain sensors, which can be stretched up to 500% and show high sensitivity in a wide strain range.
Journal ArticleDOI
Stretchable Ti3C2Tx MXene/Carbon Nanotube Composite Based Strain Sensor with Ultrahigh Sensitivity and Tunable Sensing Range
Yichen Cai,Jie Shen,Gang Ge,Yizhou Zhang,Wanqin Jin,Wei Huang,Jinjun Shao,Jian Yang,Xiaochen Dong +8 more
TL;DR: The versatile and scalable Ti3C2Tx MXene/CNT strain sensors provide a promising route to future wearable artificial intelligence with comprehensive tracking ability of real-time and in situ physiological signals for health and sporting applications.