Stretchable, self-healing, conductive hydrogel fibers for strain sensing and triboelectric energy-harvesting smart textiles

Shuai, Luyizheng; Guo, Zi Hao; Zhang, Panpan; Wan, Junmin; Pu, Xiong; Wang, Zhong Lin

doi:10.1016/j.nanoen.2020.105389

Cited by 245 publications

(176 citation statements)

References 47 publications

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“…Flexible sensors have been widely used in human motions detection, [1] health monitoring, [2][3][4][5][6][7][8][9][10] electronic skin, [11][12][13][14][15] soft robots, [12,16,17] and human-computer interaction. [18][19][20] Normally, these sensors are usually designed with conductive materials (such as metal nanowires, [21][22][23] conductive polymers, [24][25][26] and DOI: 10.1002/adhm.202002083 carbon materials [27][28][29][30] ) on flexible substrates, and they work by converting mechanical deformations under external force into electrical signals such as resistance or capacitance.…”

Section: Introductionmentioning

confidence: 99%

Highly Stretchable, Adhesive, and Self‐Healing Silk Fibroin‐Dopted Hydrogels for Wearable Sensors

Zhao

Zhang

et al. 2021

Adv Healthcare Materials

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In recent years, the preparations of flexible electronic devices have attracted great attention. Here, a simple one-pot method of thermal polymerization is introduced to fabricate silk fibroin-dopted hydrogels (SFHs), which are both chemically and physically cross-linked by acrylamide (AM), acrylic acid (AA), and silk fibroin (SF). The addition of SF can effectively enhance the mechanical property of the SFH 12% by 59% compared with SFH 0% . Taking the advantage of its wide working range of stress (about 0.455-568.9 kPa), the SFH can work as a resistance-type pressure sensor to monitor different human motions. What is more, the excellent adhesion, about 75.17 N m −1 of SFH 46% enables it to fit tightly to other objects during the testing, which significantly reduces the loss of small signals due to poor fit. In addition, the SFH demonstrates excellent self-healing property without requiring external excitation and a sensitive temperature response in the range of −10 to 60°C. The SFH is expected to be applied in the field of electronic skin, soft robots, and other flexible electronic products as well as speech recognition.

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Section: Introductionmentioning

confidence: 99%

Highly Stretchable, Adhesive, and Self‐Healing Silk Fibroin‐Dopted Hydrogels for Wearable Sensors

Zhao

Zhang

et al. 2021

Adv Healthcare Materials

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“…In addition, ionic conductive polymers have attracted significant attention owing to their high stretchability, transparency, and superior conductivity and have been prepared in forms of hydrogel and fiber (Shuai et al, 2020). The current in ionic conductive polymers is transported by means of the migration of free ions in water, thus endowing the ionic conductive polymers with a smaller change in resistance under (F) Fabrication process of organohydrogel fibers and their multifunctional applications in electrodes, optical devices, and sensors.…”

Section: Functional Polymersmentioning

confidence: 99%

Electronic fibers and textiles: Recent progress and perspective

et al. 2021

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Wearable electronics are receiving increasing attention with the advances of human society and technologies. Among various types of wearable electronics, electronic fibers/textiles, which integrate the comfort and appearance of conventional fibers/textiles with the functions of electronic devices, are expected to play important roles in remote health monitoring, disease diagnosis/treatment, and human-machine interface. This article aims to review the recent advances in electronic fibers/textiles, thus providing a comprehensive guiding reference for future work. First, we review the selection of functional materials and fabrication strategies of fiber-shaped electronic devices with emphasis on the newly developed functional materials and technologies. Their applications in sensing, light emitting, energy harvest, and energy storage are discussed. Then, the fabrication strategies and applications of electronic textiles are summarized. Furthermore, the integration of multifunctional electronic textiles and their applications are summarized. Finally, we discuss the existing challenges and propose the future development of electronic fibers/textiles. INTRODUCTIONRecently, development of flexible and wearable electronics has been gradually prominent in our daily life (Park et al., 2018;Trung and Lee, 2016). Ideal wearable electronics possess characteristics of flexibility, light weight, easy to bind with human skin, and tolerating mechanical deformation, to satisfy the requirements of comfort and avoid interfering with normal activities of humans (Zeng et al., 2014). However, traditional electronics with high performance are mostly made of bulky and rigid inorganic materials, such as silicon or gallium arsenide, which are used for fabrication of complex planar circuits (Fan et al., 2008; Kim et al., 2009). The mechanical mismatch between rigid electronics and human skin has immensely prevented electronic devices from conformably attaching on the human body. Therefore, electronic devices are gradually developing toward flexibility and miniaturization to fulfill the requirements of wearing, and have developed from three dimensional (3D) rigid devices to low-dimensional and lightweight flexible devices. Electronics in forms of fibers and textiles, with advantages of good flexibility, light weight, breathability, and easiness of integration with traditional clothes, are one of the ideal form of wearables (Chatterjee et al., 2019).Although fibers have been used in human lives for thousands of years, the history of developing functional and intelligent fibers is not long. Before the emergence of flexible and wearable electronics, optical fibers and metal fibers were the representative functional fibers (Kao and Hockham, 1966;Wardclose and Partidge, 1990). Recently, with the progress of material science and nanotechnology, wearable electronic fibers/ textiles, including 1D fiber-shaped electronic devices (electronic fibers) and 2D/3D electronic textiles, which combine the flexibility and excellent mechanical properties of fib...

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“…For example, Lu et al 3 designed an FCPC based on CNTs and a polymer fiber, which has an ultralow detection limit (0.01% strain) owing to the design of double‐leveled helical gaps and the CNTs with a high aspect ratio (Figure 1A). To adapt to the movement of large strain range, Shuai et al 4 fabricated highly stretchable conductive hydrogels (900% strain) for human movement monitoring, as shown in Figure 1B. Cao et al 5 used a network of multihydrogen bonds and nanoconductive networks to achieve FCPC‐based strain sensors with high sensitivity and excellent stability that can recognize facial expressions and vocal cord vibrations (Figure 1C).…”

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Flexible conductive polymer composites for smart wearable strain sensors

et al. 2020

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Wearable strain sensors based on flexible conductive polymer composites (FCPCs) have attracted great attention due to their applications in the fields of human-machine interaction, disease diagnostics, human motion detection, and soft robotic skin. In recent decades, FCPC-based strain sensors with high stretchability and sensitivity, short response time, and excellent stability have been developed, which are expected to be more versatile and intelligent. Smart strain sensors are required to provide wearable comfort, such as breathability, selfcooling ability, and so forth. To adapt to the harsh environment, wearable strain sensors should also be highly adaptive to protect the skin and the sensor itself. In addition, portable power supply system, multisite sensing capability, and multifunctionality are crucial for the next generation of FCPC-based strain sensor.

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Stretchable, self-healing, conductive hydrogel fibers for strain sensing and triboelectric energy-harvesting smart textiles

Cited by 245 publications

References 47 publications

Highly Stretchable, Adhesive, and Self‐Healing Silk Fibroin‐Dopted Hydrogels for Wearable Sensors

Highly Stretchable, Adhesive, and Self‐Healing Silk Fibroin‐Dopted Hydrogels for Wearable Sensors

Electronic fibers and textiles: Recent progress and perspective

Flexible conductive polymer composites for smart wearable strain sensors

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