Skin-adhesive lignin-grafted-polyacrylamide/hydroxypropyl cellulose hydrogel sensor for real-time cervical spine bending monitoring in human-machine Interface

Chen, Ying; Lv, Xiaowei; Wang, Yushu; Shi, Jingyi; Luo, Sihan; Fan, Junjiang; Sun, Bo; Liu, Yupeng; Fan, Quli

doi:10.1016/j.ijbiomac.2023.125833

Cited by 20 publications

(3 citation statements)

References 35 publications

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“…Figure f shows the 1300% elongation of the PAM-BC hydrogel electrolyte, which is due to the tough dual-network structure. As shown in Figure S4, the PAM-BC hydrogel has good adhesion to various materials such as plastic, polyethylene, sheet steel, and zinc sheet due to coordination bonds − and wet adhesion, which demonstrates good interfacial compatibility. It contributes to the reduced interfacial resistance.…”

Section: Resultsmentioning

confidence: 99%

Construction of Double-Network Hydrogel Electrolytes for Long-Cycle Dendrite-Free Zinc Anodes

Xie,

Wang,

Xie

et al. 2024

ACS Appl. Energy Mater.

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Water-based rechargeable zinc-ion batteries (ZIBs) are promising for large-scale energy storage due to their ecoefficiency, high capacity, safety, and low cost. However, challenges, such as water decomposition reactions and liquid leakage, hinder their development. We address these issues with a dual-network PAM-BC hydrogel electrolyte, designed by using a socking-free method. This electrolyte enhances the electrochemical performance of zinc anodes, inhibits corrosion and hydrogen evolution reactions, and mitigates dendrite growth. The Zn//PAM-BC//Zn battery cycles stably for 4000 h at 0.5 mA cm–2 and 650 h at a high depth of discharge (DOD = 42.7%). The pouch battery with PAM-BC remains stable after high pressure, bending, or shear, showing promise for wearable electronic devices. This work introduces an approach to designing multifunctional hydrogel electrolytes for high-performance flexible batteries.

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Section: Resultsmentioning

confidence: 99%

Construction of Double-Network Hydrogel Electrolytes for Long-Cycle Dendrite-Free Zinc Anodes

Xie,

Wang,

Xie

et al. 2024

ACS Appl. Energy Mater.

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“…In the past few years, stretchable and wearable strain sensors, which are capable of converting external stimuli into on-demand electric signals, have been employed in various fields, including human–machine interface, , blood pressure monitoring, piezoelectric nanogenerator, and multifunctional sensor. , Most traditional strain sensors are composed of polymer matrices (such as dimethylsiloxane and polyurethane) with high modulus and low flexibility, resulting in their poor fit to the skin and being unsuitable for complex deformation . Conductive hydrogels have attracted significant interest due to their unique advantages, including tissue-like softness (Young’s modulus <10 2 kPa), biocompatibility, high flexibility, and structural designability. , Consequently, conductive hydrogels are considered good candidates for multifunctional wearable and flexible electronic devices.…”

Section: Introductionmentioning

confidence: 99%

“…In the past few years, stretchable and wearable strain sensors, which are capable of converting external stimuli into ondemand electric signals, have been employed in various fields, including human−machine interface, 1,2 blood pressure monitoring, 3 piezoelectric nanogenerator, 4 and multifunctional sensor. 5,6 Most traditional strain sensors are composed of polymer matrices (such as dimethylsiloxane and polyurethane) with high modulus and low flexibility, resulting in their poor fit to the skin and being unsuitable for complex deformation.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional, Degradable Wearable Sensors Prepared with an Initiator and Crosslinker-Free Method

Hu,

Guo,

Zhao

et al. 2024

ACS Appl. Mater. Interfaces

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The present zwitterionic hydrogel-based wearable sensor exhibits various limitations, such as limited degradation capacity, unavoidable toxicity resulting from initiators, and poor mechanical properties that cannot satisfy practical demands. Herein, we present an initiator and crosslinker-free approach to prepare polyethylene glycol (PEG)@poly[2-(methacryloyloxy)ethyl] dimethyl-(3-sulfopropyl) (PSBMA) interpenetrating polymer network (IPN) hydrogels that are self-polymerized via sunlight-induced and non-covalent crosslinking through electrostatic interaction and hydrogen bonding among polymer chains. The PEG@PSBMA IPN hydrogel possesses tissue-like softness, superior stretchability (∼2344.6% elongation), enhanced fracture strength (∼39.5 kPa), excellent biocompatibility, antibacterial property, reliable adhesion, and ionic conductivity. Furthermore, the sensor based on the IPN hydrogel demonstrates good sensitivity and cyclic stability, enabling effective real-time monitoring of human body activities. Moreover, it is worth noting that the excellent degradability in the saline solution within 8 h makes the prepared hydrogel-based wearable sensor free from the electronic device contamination. We believe that the proposed strategy for preparing physical zwitterionic hydrogels will pave the way for fabricating eco-friendly wearable devices.

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Recent Progress in Wearable Self‐Powered Biomechanical Sensors: Mechanisms and Applications

Zhang,

Lin,

Wan

et al. 2024

Adv Materials Technologies

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Biomechanical signals, such as strain variations of the skin, vibrations of the chest and throat, as well as motions of the limbs, hold immense significance in healthcare monitoring, disease diagnosis, and human‐machine interface. Examples span from monitoring blood pressure and pulse waves for atherosclerosis diagnosis, to distinguishing between metatarsalgia patients and healthy individuals by tracking their walking postures, and to voiceprint recognition and hearing aid technology based on vibration sensing. Wearable biomechanical sensors play a crucial role in providing valuable insights into one's health condition and physiological features. However, the development of high‐performance sensors capable of prolonged monitoring poses challenges. Traditional batteries have limited lifespan and pose difficulty in replacement. Using self‐powered devices for the measurement of biomechanical signals represents an attractive solution to tackle the issues caused by batteries. This review focuses on the mechanisms of wearable self‐powered biomechanical sensors, and delves into recent advancements in their applications, covering areas of cardiovascular system monitoring, acoustic signals detection, human motion tracking, and many others associated with biomechanics. A concluding section outlines the potential future prospects in this evolving field of materials and biomedical research.

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Skin-adhesive lignin-grafted-polyacrylamide/hydroxypropyl cellulose hydrogel sensor for real-time cervical spine bending monitoring in human-machine Interface

Cited by 20 publications

References 35 publications

Construction of Double-Network Hydrogel Electrolytes for Long-Cycle Dendrite-Free Zinc Anodes

Construction of Double-Network Hydrogel Electrolytes for Long-Cycle Dendrite-Free Zinc Anodes

Multifunctional, Degradable Wearable Sensors Prepared with an Initiator and Crosslinker-Free Method

Recent Progress in Wearable Self‐Powered Biomechanical Sensors: Mechanisms and Applications

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