Tannic acid modified hemicellulose nanoparticle reinforced ionic hydrogels with multi-functions for human motion strain sensor applications

ABSTRACTFlexible electronics has emerged as a very promising field, in particular,wearable, bendable, and stretchable strain sensors with high sensitivity which could be used for human motion detection, sports performance monitoring, etc. In this paper, a highly stretchable and sensitive strain sensor composed of reduced graphene oxide foam and elastomer composite is fabricated by assembly and followed by a polymer immersing process. The strain sensor has demonstrated high stretchability and sensitivity. Furthermore, the device was employed for gauging muscle-induced strain which results in high sensitivity and reproducibility. The developed strain sensors showed great application potential in fields of biomechanical systems.

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Flexible Metal/Polymer Composite Films Embedded with Silver Nanowires as a Stretchable and Conductive Strain Sensor for Human Motion Monitoring

Micromachines ◽

10.3390/mi10060372 ◽

2019 ◽

Vol 10 (6) ◽

pp. 372 ◽

Cited By ~ 8

Author(s):

Jinjin Luan ◽

Qing Wang ◽

Xu Zheng ◽

Yao Li ◽

Ning Wang

Keyword(s):

Polymer Composite ◽

Silver Nanowires ◽

Composite Films ◽

Strain Sensor ◽

High Sensitivity ◽

Human Motion ◽

Applied Strain ◽

Potential Candidate ◽

Flexible Metal ◽

Metal Polymer

To avoid conductive failure due to the cracks of the metal thin film under external loads for the wearable strain sensor, a stretchable metal/polymer composite film embedded with silver nanowires (AgNWs) was examined as a potential candidate. The combination of Ag film and AgNWs enabled the fabrication of a conductive film that was applied as a high sensitivity strain sensor, with gauge factors of 7.1 under the applied strain of 0–10% and 21.1 under the applied strain of 10–30%. Furthermore, the strain sensor was demonstrated to be highly reversible and remained stable after 1000 bending cycles. These results indicated that the AgNWs could act as elastic conductive bridges across cracks in the metal film to maintain high conductivity under tensile and bending loads. As such, the strain sensor engineered herein was successfully applied in the real-time detection and monitoring of large motions of joints and subtle motions of the mouth.

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Cellulose nanocrystalline hydrogel based on a choline chloride deep eutectic solvent as wearable strain sensor for human motion

Carbohydrate Polymers ◽

10.1016/j.carbpol.2020.117443 ◽

2021 ◽

Vol 255 ◽

pp. 117443

Author(s):

Huiqiang Wang ◽

Jiachen Li ◽

Xin Yu ◽

Guihua Yan ◽

Xing Tang ◽

...

Keyword(s):

Choline Chloride ◽

Deep Eutectic Solvent ◽

Strain Sensor ◽

Human Motion

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Flexible and wearable strain sensor based on electrospun carbon sponge/polydimethylsiloxane composite for human motion detection

RSC Advances ◽

10.1039/d0ra09070k ◽

2021 ◽

Vol 11 (7) ◽

pp. 4186-4193

Author(s):

He Gong ◽

Chuan Cai ◽

Hongjun Gu ◽

Qiushi Jiang ◽

Daming Zhang ◽

...

Keyword(s):

Motion Detection ◽

Strain Sensor ◽

Human Motion ◽

Gauge Factor ◽

Human Motion Detection ◽

Tensile Strains

Electrospun carbon sponge was used to measure tensile strains with a high gauge factor.

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A highly stretchable strain sensor based on electrospun carbon nanofibers for human motion monitoring

RSC Advances ◽

10.1039/c6ra16236c ◽

2016 ◽

Vol 6 (82) ◽

pp. 79114-79120 ◽

Cited By ~ 41

Author(s):

Yichun Ding ◽

Jack Yang ◽

Charles R. Tolle ◽

Zhengtao Zhu

Keyword(s):

Carbon Nanofibers ◽

Strain Sensor ◽

Human Motion ◽

Sensitive Strain ◽

Free Standing ◽

Highly Stretchable ◽

Human Motion Monitoring

A highly stretchable and sensitive strain sensor assembled by embedding a free-standing electrospun carbon nanofibers (CNFs) mat in a polyurethane (PU) matrix shows a fast, stable, and reproducible response to strain up to 300%.

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