scholarly journals Network cracks-based wearable strain sensors for subtle and large strain detection of human motions

2018 ◽  
Vol 6 (19) ◽  
pp. 5140-5147 ◽  
Author(s):  
Shuai Wang ◽  
Peng Xiao ◽  
Yun Liang ◽  
Jiawei Zhang ◽  
Youju Huang ◽  
...  
Keyword(s):  
Network Structure ◽  
Large Strain ◽  
Full Range ◽  
Strain Sensors ◽  
Free Standing ◽  
Human Motions ◽  
Strain Detection

Macroscopic multilayer free-standing CNTs films/PDMS composite with cracks in the network structure displays ability for the full-range detection of human motions.

Carbonized silk georgette as an ultrasensitive wearable strain sensor for full-range human activity monitoring

2017 ◽  
Vol 5 (30) ◽  
pp. 7604-7611 ◽  
Author(s):  
Chunya Wang ◽  
Kailun Xia ◽  
Muqiang Jian ◽  
Huimin Wang ◽  
Mingchao Zhang ◽  
...  
Keyword(s):  
Human Activity ◽  
Full Range ◽  
Strain Sensor ◽  
Activity Monitoring ◽  
Strain Sensors ◽  
Human Motions

Silk georgette based wearable strain sensors are developed, which exhibit outstanding performance and great potential in monitoring full-range human motions.

High-Performance Strain Sensors with Fish-Scale-Like Graphene-Sensing Layers for Full-Range Detection of Human Motions

ACS Nano ◽  
2016 ◽  
Vol 10 (8) ◽  
pp. 7901-7906 ◽  
Author(s):  
Qiang Liu ◽  
Ji Chen ◽  
Yingru Li ◽  
Gaoquan Shi
Keyword(s):  
High Performance ◽  
Full Range ◽  
Strain Sensors ◽  
Fish Scale ◽  
Human Motions

scholarly journals Anisotropic, Wrinkled, and Crack-Bridging Structure for Ultrasensitive, Highly Selective Multidirectional Strain Sensors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Heng Zhang ◽  
Dan Liu ◽  
Jeng-Hun Lee ◽  
Haomin Chen ◽  
Eunyoung Kim ◽  
...  
Keyword(s):  
Rational Design ◽  
Full Range ◽  
Human Motion ◽  
Strain Sensors ◽  
Gauge Factor ◽  
Wearable Electronics ◽  
Trade Off ◽  
Human Motion Detection ◽  
Sensing Applications ◽  
Anisotropic Structures

AbstractFlexible multidirectional strain sensors are crucial to accurately determining the complex strain states involved in emerging sensing applications. Although considerable efforts have been made to construct anisotropic structures for improved selective sensing capabilities, existing anisotropic sensors suffer from a trade-off between high sensitivity and high stretchability with acceptable linearity. Here, an ultrasensitive, highly selective multidirectional sensor is developed by rational design of functionally different anisotropic layers. The bilayer sensor consists of an aligned carbon nanotube (CNT) array assembled on top of a periodically wrinkled and cracked CNT–graphene oxide film. The transversely aligned CNT layer bridge the underlying longitudinal microcracks to effectively discourage their propagation even when highly stretched, leading to superior sensitivity with a gauge factor of 287.6 across a broad linear working range of up to 100% strain. The wrinkles generated through a pre-straining/releasing routine in the direction transverse to CNT alignment is responsible for exceptional selectivity of 6.3, to the benefit of accurate detection of loading directions by the multidirectional sensor. This work proposes a unique approach to leveraging the inherent merits of two cross-influential anisotropic structures to resolve the trade-off among sensitivity, selectivity, and stretchability, demonstrating promising applications in full-range, multi-axis human motion detection for wearable electronics and smart robotics.

On finding of high piezoresistive response of carbon nanotube films without surfactants for in-plane strain detection

2011 ◽  
Vol 22 (18) ◽  
pp. 2155-2159 ◽  
Author(s):  
Y. Miao ◽  
L. Chen ◽  
Y. Lin ◽  
R. Sammynaiken ◽  
W. J. Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Plane Strain ◽  
Composite Films ◽  
Strain Sensors ◽  
Gauge Factor ◽  
Experimental Discovery ◽  
Strain Detection ◽  
Nanotube Films

The use of carbon nanotubes (CNTs) for construction of sensors is promising. This is due to some unique characteristics of CNTs. In recent years, strain sensors built from CNT composite films have been developed; however, their low piezoresistive sensitivity (gauge factor (GF)) in in-plane strain detection is a concern compared with other strain sensors. This article reports an experimental discovery of the superior piezoresistive response of a CNT film that is free of surfactants, known as the pure CNT film. The mechanism for the high GF with the pure CNT film strain sensors is also discussed.

Embedded large strain sensors with graphene-carbon black-silicone rubber composites

2018 ◽  
Vol 282 ◽  
pp. 206-214 ◽  
Author(s):  
Agee Susan Kurian ◽  
Velram Balaji Mohan ◽  
Debes Bhattacharyya
Keyword(s):  
Carbon Black ◽  
Silicone Rubber ◽  
Large Strain ◽  
Strain Sensors ◽  
Rubber Composites

A highly stretchable and transparent silver nanowire/thermoplastic polyurethane film strain sensor for human motion monitoring

2019 ◽  
Vol 6 (11) ◽  
pp. 3119-3124 ◽  
Author(s):  
Runfei Wang ◽  
Wei Xu ◽  
Wenfeng Shen ◽  
Xiaoqing Shi ◽  
Jian Huang ◽  
...  
Keyword(s):  
Silver Nanowires ◽  
Thermoplastic Polyurethane ◽  
Human Motion ◽  
Strain Sensors ◽  
Silver Nanowire ◽  
Transparent Film ◽  
Polyurethane Film ◽  
Highly Stretchable ◽  
Human Motion Monitoring ◽  
Human Motions

Transparent film strain sensors based on silver nanowires and thermoplastic polyurethane are promising candidates for detecting various human motions and monitoring the mass of some kinetic objects.

A novel intrinsically strain sensor for large strain detection

2021 ◽  
Vol 332 ◽  
pp. 113081
Author(s):  
Jiang Liu ◽  
Biao Lei ◽  
Weitao Jiang ◽  
Jie Han ◽  
Hongjian Zhang ◽  
...  
Keyword(s):  
Large Strain ◽  
Strain Sensor ◽  
Strain Detection
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