Wearable graphene film strain sensors encapsulated with nylon fabric for human motion monitoring

Lu, Shaowei; Wang, Shuai; Wang, Gong-Dong; Ma, Junchi; Wang, Xiaoqiang; Tang, Hailong; Yang, Xinling

doi:10.1016/j.sna.2019.04.038

Cited by 30 publications

(11 citation statements)

References 29 publications

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“…In general, the substrate materials of a flexible strain sensor could include stretchable polymer [10][11][12][13][14][15] and flexible fabric. [16][17][18][19][20][21] Although stretchable polymer has greater elasticity, flexible fabric is more breathable and more comfortable to human skin. The nanocarbon materials employed in strain sensors are nanocarbon tubes, graphene, carbon black and nanocarbon fibers.…”

Section: Introductionmentioning

confidence: 99%

High sensitivity and flexible fabric strain sensor based on electrochemical graphene

Wang

Cheng

Huang

et al. 2021

Jpn. J. Appl. Phys.

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In this study, electrochemical graphene (ECG) was chosen to be attached to a polyester fabric with a knitted structure as a flexible fabric strain sensor through a cloth dyeing method. According to scanning electron microscopy observation and Raman scattering spectroscopy measurements, ECG was successfully attached to the fabric structure. The electromechanical performance and strain sensing properties of the graphene-based flexible strain sensor were evaluated. The resistance change and gauge factor of different ECG attached as a fabric strain sensor were quantified. The gauge factor of the fabric strain sensor with less ECG is greater than that of the fabric strain sensor with more ECG. The high gauge factor of 47 was achieved in a strain range from 0% to 2%. The fabricated strain sensor exhibited high sensitivity, fast response time and good repeatability. The fabricated ECG fabric strain sensor could be used to detect tiny physiological signals and human motion.

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Section: Introductionmentioning

confidence: 99%

High sensitivity and flexible fabric strain sensor based on electrochemical graphene

Wang

Cheng

Huang

et al. 2021

Jpn. J. Appl. Phys.

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“…12,13 Alternatively, low-cost fibers with wide availability and good surface characteristics can be used to prepare flexible base materials for pressure sensors. 14 Such materials can be easily stuck to human skin or woven into clothing, and they are extremely attractive for the development of new types of flexible pressure sensors for practical applications.…”

Section: Introductionmentioning

confidence: 99%

“…A conductive material is usually combined with a basal material elastic matrix (e.g., graphene nanosheets with poly(dimethylsiloxane) or polyimide), − and the conductive material is easily confined within the elastic matrix. Thin-film sensors can be easily obtained through above strategy, but they usually show less comfortability. , Alternatively, low-cost fibers with wide availability and good surface characteristics can be used to prepare flexible base materials for pressure sensors . Such materials can be easily stuck to human skin or woven into clothing, and they are extremely attractive for the development of new types of flexible pressure sensors for practical applications.…”

Section: Introductionmentioning

confidence: 99%

MXene-Coated Air-Permeable Pressure-Sensing Fabric for Smart Wear

et al. 2020

ACS Appl. Mater. Interfaces

131

105

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Considering the fast development of wearable electronics and soft robotics, pressure sensors with high sensitivity, durability, and washability are of great importance. However, the surface modification of fabrics with high-sensitivity active materials requires that issues associated with poor interface adhesion and stability are resolved. In this study, we explored the key factors for firmly bonding MXene to fabric substrates to fabricate wearable and washable pressure sensing fabric. The interactions between MXene and various fabrics were elucidated by investigating the adsorption and binding capacities. The natural rough surface of cotton fibers also promoted the firm adsorption of MXene. As a result, MXene was difficult to detach, even with mechanical washing and ultrasonic treatment. Further, the abundant functional groups on the MXene surface were conducive to interfacial interactions with cotton fibers. An increase in the amount of fluorine-containing functional groups also improved the hydrophobicity of the fabric surface. The good force-sensitive resistance of MXene-coated cotton allowed this pressure-sensing fabric to function as a flexible pressure sensor, which showed a high gauge factor (7.67 kPa −1 ), a rapid response and relaxation speed (<35 ms), excellent stability (>2000 cycles), and good washing durability. Further, the as-fabricated flexible pressure sensor was demonstrated as a wearable human−machine interface that supported multitouch interactions and exhibited a rapid response. Thus, this work provides a new approach for developing next-generation high-sensitivity wearable pressure sensors.

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“…Except for commercial component, different materials are selected to generate wearable sensor such as nanomaterial [11][12][13] (carbon nanotube, silver nanowires, graphene, etc. ), PEDOT:PSS [14], nylon-based silver yarns or other conductive yarns [15,16], etc.…”

Section: Introductionmentioning

confidence: 99%

A Fabric-Based Integrated Sensor Glove System Recognizing Hand Gesture

Han

Miao

Liu

et al. 2021

Autex Research Journal

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The research on wearable glove sensor system has been increasing over recent years because of the need for portability and comfort. This study presents a fabric-based integrated sensor glove system with five sensing zones. Five sensors are knitted by silver-plated nylon yarn and embedded into glove directly using intarsia technology. Various parameters including sensor elasticity, sizes of embedded sensor as well as glove are discussed, respectively. Further, selected or chosen integrated sensor glove is manufactured and tested for recognizing gestures. Results show that elasticity affects effective sensing range of knitted sensors, size has significant influence on sensors’ sensitivity, and appropriate glove size helps avoiding nonlinear sensing phenomenon. Finally, the glove system, by extracting feature data, can distinguish Chinese number gestures very well and has also the potential to recognize more hand gestures in the future.

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Wearable graphene film strain sensors encapsulated with nylon fabric for human motion monitoring

Cited by 30 publications

References 29 publications

High sensitivity and flexible fabric strain sensor based on electrochemical graphene

High sensitivity and flexible fabric strain sensor based on electrochemical graphene

MXene-Coated Air-Permeable Pressure-Sensing Fabric for Smart Wear

A Fabric-Based Integrated Sensor Glove System Recognizing Hand Gesture

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