Flexible and wearable strain sensing fabrics

Cai, Guangming; Yang, Mingfang; Xu, Zhenglin; Liu, Jiangang; Tang, Bin; Wang, Xungai

doi:10.1016/j.cej.2017.05.091

Cited by 190 publications

(118 citation statements)

References 52 publications

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“…[158] Apart from the polymeric supporting materials, natural fibers, yarns, and fabrics have been activated by conductive materials through techniques such as carbonization process, dip-coating, bar coating, ultrasonication, and vacuum filtration. [23,[143][144][145][146][147][148][149][150]152,[159][160][161][162][163] Carbonization is a well-established process where carbonaceous substances such as natural fibers are broken down into elemental carbon and chemical compounds by heating ( Figure 4a). [148,149] During the carbonization process, natural fiber-based materials are heated up in a vacuum oven in the presence of an inert gas without any oxygen from the air, converting them into electrically conductive active materials for strain sensing.…”

Section: Fabrication Of Wearable Strain Sensorsmentioning

confidence: 99%

Wearable and Stretchable Strain Sensors: Materials, Sensing Mechanisms, and Applications

Souri¹,

Banerjee

Jusufi

et al. 2020

Advanced Intelligent Systems

446

289

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Recent advances in the design and implementation of wearable resistive, capacitive, and optical strain sensors are summarized herein. Wearable and stretchable strain sensors have received extensive research interest due to their applications in personalized healthcare, human motion detection, human–machine interfaces, soft robotics, and beyond. The disconnection of overlapped nanomaterials, reversible opening/closing of microcracks in sensing films, and alteration of the tunneling resistance have been successfully adopted to develop high‐performance resistive‐type sensors. On the other hand, the sensing behavior of capacitive‐type and optical strain sensors is largely governed by their geometrical changes under stretching/releasing cycles. The sensor design parameters, including stretchability, sensitivity, linearity, hysteresis, and dynamic durability, are comprehensively discussed. Finally, the promising applications of wearable strain sensors are highlighted in detail. Although considerable progress has been made so far, wearable strain sensors are still in their prototype stage, and several challenges in the manufacturing of integrated and multifunctional strain sensors should be yet tackled.

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Section: Fabrication Of Wearable Strain Sensorsmentioning

confidence: 99%

Wearable and Stretchable Strain Sensors: Materials, Sensing Mechanisms, and Applications

Souri¹,

Banerjee

Jusufi

et al. 2020

Advanced Intelligent Systems

446

289

View full text Add to dashboard Cite

show abstract

“…breaking elongation of GOF and GRF prepared by wet spinning is 6.8-10.1% and 5.8% [51], and breaking elongation of GRF prepared by dry-forming is only 4.2%) [52], and FGS based on fiber exhibited low stretchability, so it is necessary to further process the graphene fiber to fiber assemblies structure or to integrate like GWF structure with other elastic polymers substrate ( e.g. PET, PA66, PU) [10,75,76]. On the other hand, the FGS based on off-theshelf fiber assemblies normally has higher stretchability, especially on knitting fabric [77].…”

Section: Stretchabilitymentioning

confidence: 99%

A review on graphene strain sensors based on fiber assemblies

et al. 2020

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With the development of wearable electronic devices, electronic-textiles have attracted more and more attentions due to its widely applications in human movement monitoring, health and physical indicators monitoring (e.g. heartbeat, pulse, body temperature, limb movements, and vocalization). As a vital part of electronic textiles, graphene strain sensors that based on fiber assemblies (FGS) is of concern to the researchers due to its well integration of graphene with fibers assemblies, which will inevitably promote the rapid development and widespread applications of next-generation wearable electronic devices. Fiber assemblies exhibit outstanding ability of structural retention and fatigue resistance during wearing and washing, which can provide a large-area affiliated carrier and widespread service platform for the design and application of electronic-textiles. And the graphene endows electronic-textiles with good electrical and mechanical properties. Herein, the previous researches on fabrication, sensing mechanism, sensing performance indexes, and application field of FGS are systematically summarized. Furthermore, the potential difficulties and future development prospect of FGS are summarized and discussed. It is expected that this review is not only a summary of what has been achieved, but also provide a guideline for future development.

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“…Alternative techniques have been developed to fabricate conductive textiles, such as integrating metal filaments with yarns, coating fibers with a thin layer of conductive materials (metal nanoparticles/nanowires, carbon nanotubes, graphene, etc. ), or direct patterning of conducting polymers, and inkjet/stencil/screen/nozzle printing of conductive materials onto textiles ( Figure ) . The inclusion of metal wires in the yarns would increase the stiffness of the textiles and thereby decrease the wear comfort.…”

Section: Materials Designsmentioning

confidence: 99%

“…Coating fibers with conductive materials has been widely used as it enables the preservation of mechanical properties of the fibers and high electrical conductivity. Elastic nylon/polyurethane fabrics were coated with reduced graphene oxide, leading to flexible and stretchable conductive fabrics that showed high sensitivity (maximum gauge factor ≈18.5) and large workable strain (0–30%) . The coating of reduced graphene oxide did not change remarkably of the mechanical property of the fabrics.…”

Section: Materials Designsmentioning

confidence: 99%

Strategies for Designing Stretchable Strain Sensors and Conductors

Peng

et al. 2020

Adv Materials Technologies

115

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Flexible and stretchable electronics are attracting tremendous attention for their enormous future potential in wearable technologies. Flexible and stretchable sensors and conductors are the key components of wearable devices for potential applications such as human motion detection, human health monitoring, and human–machine interfaces. One critical requirement for them is to show high level of wearability (bendability and stretchability) and meanwhile to retain their functionality and reliability under large mechanical deformation. To this end, a wide range of materials and structural designs are developed to construct these sensors and conductors. Here, the recent advances in the development of new piezoresistive materials and microstructural motifs that endow electronics with flexibility and stretchability are summarized. Challenges and future opportunities are discussed in terms of the multimodal and multidirectional sensing capabilities, the trade‐off between sensitivity/conductivity and stretchability, multifunctionality, linearity (multiple linear region phenomenon), and integration with flexible power and communication devices.

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Flexible and wearable strain sensing fabrics

Cited by 190 publications

References 52 publications

Wearable and Stretchable Strain Sensors: Materials, Sensing Mechanisms, and Applications

Wearable and Stretchable Strain Sensors: Materials, Sensing Mechanisms, and Applications

A review on graphene strain sensors based on fiber assemblies

Strategies for Designing Stretchable Strain Sensors and Conductors

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