Highly Accurate Wearable Piezoresistive Sensors without Tension Disturbance Based on Weaved Conductive Yarn

Ding, Xincheng; Zhong, Weibing; Jiang, Haiqing; Li, Mufang; Chen, Yuanli; Lü, Ying; Ma, Jun; Yadav, Ashish; Yang, Liyan; Wang, Dong

doi:10.1021/acsami.0c07928

Cited by 48 publications

(17 citation statements)

References 43 publications

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“…It not only has the thin and soft characteristics, but also has the function of response to external stimuli 3 . According to the sensing mechanism, tactile sensors can be divided into capacitive sensors, 4,5 triboelectric sensors, 6–8 piezoelectric sensors 9–11 and piezoresistive sensors 12,13 . Piezoresistive sensors have the advantages of sensitive response, wide detection range and good stability.…”

Section: Introductionmentioning

confidence: 99%

Flexible and sensitive piezoresistive electronic skin based on TOCN/PPy hydrogel films

Gao

Liu

Xie

et al. 2021

J of Applied Polymer Sci

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In recent years, the wearable electronic skin (E‐skin) has attracted more and more attention due to high sensitivity, good portability and flexibility. In this work, we used the 2,2,6,6‐tetramethylpiperidinyl‐1‐oxyl (TEMPO)‐oxidized cellulose nanofibril (TOCN) as the substrate, and used the in‐situ polymerization method to introduce polypyrrole (PPy) into the TOCN substrate. Then, the nylon gauze was used as microstructure template to prepare a TOCN/PPy E‐skin with a surface microstructure. This E‐skin possessed excellent sensing and mechanical properties. In the pressure range of 0–600 Pa, the sensitivity of E‐skin was 3.13 kPa−1. In addition, the E‐skin exhibited ultrafast response/recovery time (≤10 ms), ultralow detection limit of 0.3 Pa, good stability (>9000 cycles) and mechanical strength of up to 117 MPa. Therefore, the TOCN/PPy E‐skin has broad development prospects in the fields of artificial intelligence and health monitoring.

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Section: Introductionmentioning

confidence: 99%

Flexible and sensitive piezoresistive electronic skin based on TOCN/PPy hydrogel films

Gao

Liu

Xie

et al. 2021

J of Applied Polymer Sci

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“…• Limitation of raw material in mechanical and electrical stability • Low structural elasticity • Precise fabrication of contact junctions for different devices Sensor [ 169,170] SC [ 171,172] TENG [109,111] PENG [173,174] TEG [175][176][177]…”

Section: Energy Harvesting and Storagementioning

confidence: 99%

Elastic Fibers/Fabrics for Wearables and Bioelectronics

et al. 2022

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Wearables and bioelectronics rely on breathable interface devices with bioaffinity, biocompatibility, and smart functionality for interactions between beings and things and the surrounding environment. Elastic fibers/fabrics with mechanical adaptivity to various deformations and complex substrates, are promising to act as fillers, carriers, substrates, dressings, and scaffolds in the construction of biointerfaces for the human body, skins, organs, and plants, realizing functions such as energy exchange, sensing, perception, augmented virtuality, health monitoring, disease diagnosis, and intervention therapy. This review summarizes and highlights the latest breakthroughs of elastic fibers/fabrics for wearables and bioelectronics, aiming to offer insights into elasticity mechanisms, production methods, and electrical components integration strategies with fibers/fabrics, presenting a profile of elastic fibers/fabrics for energy management, sensors, e‐skins, thermal management, personal protection, wound healing, biosensing, and drug delivery. The trans‐disciplinary application of elastic fibers/fabrics from wearables to biomedicine provides important inspiration for technology transplantation and function integration to adapt different application systems. As a discussion platform, here the main challenges and possible solutions in the field are proposed, hopefully can provide guidance for promoting the development of elastic e‐textiles in consideration of the trade‐off between mechanical/electrical performance, industrial‐scale production, diverse environmental adaptivity, and multiscenario on‐spot applications.

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“…With the emergence of the 5G era and Internet of Things (IOT) society, the e-textile industry has witnessed tremendous development with the increasing demand for wearable electronic products and the rapid development of integration of electronics and textile technology. − The fiber- or textile-based stress/strain sensor is one of the most promising smart e-textile devices due to its light weight, flexibility, deformation, permeability, skin conformability, and comfortability. ,− ,, These outstanding properties endow them wide application in electronic skin, human–machine interface (HMI), biomedical monitoring, and intelligent robots. − ,, To achieve highly accurate and continuous human motion and health detection while exerting minimal constraints to the body, the fiber- and textile-based sensor must be able to respond to various mechanical stimuli without sacrificing breathability and comfortability. Therefore, compared with coating conductive materials directly on textiles, ,, it is expected to be a rational and effective strategy to construct multi-functional textile-based sensors by developing 1D functional fibers and yarns ,− with high stretchability, sensitivity, and stability and then forming breathable and comfortable textile structures through knitting, − braiding, weaving, ,, and other processes. , …”

Section: Introductionmentioning

confidence: 99%

Ag NW-Embedded Coaxial Nanofiber-Coated Yarns with High Stretchability and Sensitivity for Wearable Multi-Sensing Textiles

Dai

et al. 2023

ACS Appl. Mater. Interfaces

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The emerging intelligent piezoresistive yarn/textilebased sensors are of paramount importance for skin-interface electronics, owing to their unparalleled features including softness, breathability, and easy integration with functional devices. However, employing a facile way to fabricate 1D sensing yarns with mechanical robustness, multi-functional integration, and comfortability is still demanded for satisfying the practical applications. Herein, a facile onestep synchronous conjugated electrospinning and electrospraying technique is innovatively employed to continuously construct an Ag NW-embedded polyurethane (PU) nanofiber sensing yarn (AENSY) with hierarchical architecture. This 1D AENSY with weavability and stretchability can be woven into AENSY textile-based sensors integrated with functions of strain and pressure sensing. In this embedded multi-scale architecture, Ag NWs are evenly embedded and locked in the oriented and twisted PU nanofiber (PUNF) scaffold, forming the hierarchical mechanical sensing layer on the surface of the AENSY with favorable stability. Meanwhile, the presence of the elastic PUNFs enhances porosity, elasticity, and considerable deformation space, which in turn endow the AENSY textile-based sensor with a gauge factor (GF) up to 1010, a pressure sensitivity up to 16.7 N −1 , high stretchability up to 160%, and high stability under long-term cycles. In addition, the AENSY textile-based sensor exhibits light weight and the unique advantage of skin-friendliness with the human body, which can be directly and conformally attached to the curved human skin to monitor the various human movements. Furthermore, the weavable AENSYs can be integrated into smart textiles with sensing arrays, which are capable for spatial pressure and strain mapping. Thus, the continuous one-step developing process and the stable embedded-twisted fiber structure provide a promising strategy to develop innovative smart yarns and textiles for personalized healthcare and human−machine interfaces.

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Highly Accurate Wearable Piezoresistive Sensors without Tension Disturbance Based on Weaved Conductive Yarn

Cited by 48 publications

References 43 publications

Flexible and sensitive piezoresistive electronic skin based on TOCN/PPy hydrogel films

Flexible and sensitive piezoresistive electronic skin based on TOCN/PPy hydrogel films

Elastic Fibers/Fabrics for Wearables and Bioelectronics

Ag NW-Embedded Coaxial Nanofiber-Coated Yarns with High Stretchability and Sensitivity for Wearable Multi-Sensing Textiles

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