Adhesive, stretchable and antibacterial hydrogel with external/self-power for flexible sensitive sensor used as human motion detection

Zhou, Zixuan; He, Zhirui; Yin, Shiwu; Xie, Xiaoyun; Yuan, Weizhong

doi:10.1016/j.compositesb.2021.108984

Cited by 105 publications

(43 citation statements)

References 50 publications

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“…In the same way, other kinds of electrolytes, including salts, acids, alkalis, as well as ampholytes, were also utilized as dopants to add into the precursors of hydrogels by some researchers. These electrolytes includes but not limited to AlCl 3 , 2c,37 CaCl 2 , 3a,38 ZnCl 2 , 39 FeCl 3 , 40 borax, 4a,41 phytic acid, 42 NaOH, 27a,43 proline, 44 adenosine monophosphate (AMP) 25a,45 . These ionic substances not only serve as conductive particles but also interact with polymer chains or provide an environment of polymerization.…”

Section: Hydrogel‐based Strain Sensors With Electrolytesmentioning

confidence: 99%

Flexible and wearable strain sensors based on conductive hydrogels

Zhang

Liu

et al. 2022

Journal of Polymer Science

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In recent years, the field of flexible electronics has been thriving in academic achievements. Among them, the hydrogel-based strain sensors possess some characteristic advantages in stretchability, flexibility, stickiness and regulable modulus of elasticity, thus they are more likely to attach to human skin and the surfaces of objects. Compared to traditional sensors, hydrogels can overcome shortcomings in toughness and elasticity. Therefore, hydrogels are suitable to serve as the core materials of wearable electronics. Hydrogel-based strain sensors, as a typical kind of hydrogel flexible electronics, are in the categories of resistance sensors and capacitive sensors, which are primarily used for real-time monitoring of human motions. This review mainly introduces the up-to-date relative literatures in the field of hydrogel-based strain sensors.

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Section: Hydrogel‐based Strain Sensors With Electrolytesmentioning

confidence: 99%

Flexible and wearable strain sensors based on conductive hydrogels

Zhang

Liu

et al. 2022

Journal of Polymer Science

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“…For example, the substrate layer such as silicone film with surface micro column could act as a supporting layer, while the encapsulation layers of electrode could hinder water loss of hydrogel, which would benefit the sensing stability and service life of sensor. In addition, sensors assembled by reasonable multilayer structures can even realize self‐power supply, 117 which is also of great significance for the development and application of flexible wearable devices. Briefly, hydrogel sensing device with 2D layer configuration can be classified into two types: bilayer composite film and Sandwich structure.…”

Section: Sensing Principles and Structure Design Of Hydrogel Sensorsmentioning

confidence: 99%

Recent progress in conductive self‐healing hydrogels for flexible sensors

Tao

Liao

et al. 2022

Journal of Polymer Science

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Flexible sensors have great potential in the application of wearable and implantable devices, and conductive hydrogels have been widely used in wearable sensing devices due to their biomimetic structure, biocompatibility, adjustable transparency and stimuli-responsive electrical properties. Conventional conductive hydrogels are prone to be damaged in their application process and lack of long-term reliability. Inspired by natural organisms such as mussels, introduction of self-healing capabilities has been regarded as a promising approach to extend the service life of hydrogel sensing devices. This work

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“…[4] The mismatch in physical properties at the electronic−skin interface creates the most significant DOI: 10.1002/mame.202200001 challenges in the development of nextgeneration, skin-integrated electronics. [1] Hydrogel is a water-swollen and crosslinked polymeric network produced by the simple reaction of one or more monomers, [5] which shows an excellent skin-like softness and has been extensively applied in wearable devices, such as temperature sensors, [6] self-powered sensors, [7,8] strain sensors, [9][10][11][12][13][14][15] and pressure sensors. [16] The water content of the hydrogel is very high, which gives the hydrogel good flexibility and stretchability.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrogel is a water‐swollen and crosslinked polymeric network produced by the simple reaction of one or more monomers, [ 5 ] which shows an excellent skin‐like softness and has been extensively applied in wearable devices, such as temperature sensors, [ 6 ] self‐powered sensors, [ 7,8 ] strain sensors, [ 9–15 ] and pressure sensors. [ 16 ] The water content of the hydrogel is very high, which gives the hydrogel good flexibility and stretchability.…”

Section: Introductionmentioning

confidence: 99%

Graphene‐Based Hydrogel Strain Sensors with Excellent Breathability for Motion Detection and Communication

Liu

Huang

et al. 2022

Macro Materials & Eng

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Hydrogels are considered as promising materials in developing next-generation wearable sensors due to their intrinsic biocompatibility and low Young's modulus. However, there are few reports on their breathability which is very important for wear comfortability of wearable sensors. Here graphene-based hydrogel is presented with regular pores using microneedles as templates endowing them with excellent breathability (water vapor transmitting rate 2.8 kg d -1 m -2 ), which is near ten times that of human skin (water vapor transmitting rate less than 0.3 kg d -1 m -2 ). A high-performance strain sensor based on this breathable hydrogel is developed. This sensor not only possesses high sensitivity but also has an excellent linearity with strain ranging from 0% to 110%. Based on these performances, this sensor can be applied in monitoring various joint movements and muscle movements. Moreover, it can achieve barrier-free communication through Morse code.

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Adhesive, stretchable and antibacterial hydrogel with external/self-power for flexible sensitive sensor used as human motion detection

Cited by 105 publications

References 50 publications

Flexible and wearable strain sensors based on conductive hydrogels

Flexible and wearable strain sensors based on conductive hydrogels

Recent progress in conductive self‐healing hydrogels for flexible sensors

Graphene‐Based Hydrogel Strain Sensors with Excellent Breathability for Motion Detection and Communication

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