A stretchable, biocompatible, and self-powered hydrogel multichannel wireless sensor system based on piezoelectric barium titanate nanoparticles for health monitoring

Fu, Rumin; Zhong, Xinxiang; Xiao, Cairong; Lin, Jian; Guan, Youjun; Tian, Yu; Zhou, Zhengnan; Tan, Guoxin; Hu, Huabin; Zhou, Lei; Ning, Chengyun

doi:10.1016/j.nanoen.2023.108617

Cited by 28 publications

(5 citation statements)

References 38 publications

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“…10a–g ). 333 The Gel-OCS-ABTO composite PiezoGel was prepared in PBS buffer by dissolving Gel, lyophilized boronate-diol complexation of CS and the incorporation of aminated-BTO nanoparticle at different concentrations (0, 1%, 3%, and 5%). It is interesting to note that all Gel-OCS-ABTO hydrogels could be elongated multiple times, especially the Gel-OCS-ABTO (3%) composite hydrogel, which could be elongated more than 200% (largest elongation, 225%) without breaking ( Fig.…”

Section: Flexible Electronic and Bio-medical Applications Of P-pegsmentioning

confidence: 99%

Perspectives on recent advancements in energy harvesting, sensing and bio-medical applications of piezoelectric gels

et al. 2023

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Section: Flexible Electronic and Bio-medical Applications Of P-pegsmentioning

confidence: 99%

Perspectives on recent advancements in energy harvesting, sensing and bio-medical applications of piezoelectric gels

et al. 2023

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“…[ 6,7 ] Implantable sensors, including neural interfaces, can create a direct electrical bridge between the analog nervous system and the digital, artificial system, providing an efficient way to exchange information inside human body. [ 8,9 ] Generally, wearable sensors comprise flexible substrates, sensing units, and data processing module, which sense, convert, and transfer specific analytes into detectable signals through biometric elements. [ 10,11 ]…”

Section: Introductionmentioning

confidence: 99%

Wireless Technologies in Flexible and Wearable Sensing: From Materials Design, System Integration to Applications

Kong,

Li,

Zhang

et al. 2024

Advanced Materials

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Wireless and wearable sensors attract considerable interest in personalized healthcare by providing a unique approach for remote, non‐contact, and continuous monitoring of various health‐related signals without interference with daily life. Recent advances in wireless technologies and wearable sensors have promoted practical applications due to their significantly improved characteristics, such as reduction in size and thickness, enhancement in flexibility and stretchability, and improved conformability to the human body. Currently, most researches focus on active materials and structural designs for wearable sensors, with just a few exceptions reflecting on the technologies for wireless data transmission. This review provides a comprehensive overview of the state‐of‐the‐art wireless technologies and related studies on empowering wearable sensors. The emerging functional nanomaterials utilized for designing unique wireless modules are highlighted, which include metals, carbons, and MXenes. Additionally, the review outlines the system‐level integration of wireless modules with flexible sensors, spanning from novel design strategies for enhanced conformability to efficient transmitting data wirelessly. Furthermore, the review introduces representative applications for remote and non‐invasive monitoring of physiological signals through on‐skin and implantable wireless flexible sensing systems. Finally, the challenges, perspectives, and unprecedented opportunities for wireless and wearable sensors are discussed.This article is protected by copyright. All rights reserved

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“…Self-powered hydrogels are emerging as promising materials for flexible wearable devices, among which piezoelectric hydrogels and hydrogel-based triboelectric nanogenerators are currently the most extensively studied. − Hydrogel-based triboelectric nanogenerators are generated by the contact and separation of two materials with different triboelectric polarities; the hydrogel layer as a dielectric layer increases the output voltage and improves the flexibility of the device, leading to charge transfer and potential difference creation. , Wang et al have designed a series of hydrogel-based triboelectric nanogenerators for flexible sensors . However, the manufacturing process for triboelectric nanogenerators is complicated and costly.…”

mentioning

confidence: 99%

“…However, the manufacturing process for triboelectric nanogenerators is complicated and costly. A piezoelectric hydrogel utilizes the properties of the piezoelectric material inside the gel to deform in response to external signals and then generate a potential difference. , Piezoelectric hydrogels are easy to prepare and exhibit a high sensitivity. Besides, there are recent reports about piezoionic hydrogels.…”

mentioning

confidence: 99%

Tough, Antifreezing, and Piezoelectric Organohydrogel as a Flexible Wearable Sensor for Human–Machine Interaction

Shi,

Guan,

Liu

et al. 2024

ACS Nano

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Piezoelectric hydrogel sensors are becoming increasingly popular for wearable sensing applications due to their high sensitivity, self-powered performance, and simple preparation process. However, conventional piezoelectric hydrogels lack antifreezing properties and are thus confronted with the liability of rupture in low temperatures owing to the use of water as the dispersion medium. Herein, a kind of piezoelectric organohydrogel that integrates piezoelectricity, low-temperature tolerance, mechanical robustness, and stable electrical performance is reported by using poly(vinylidene fluoride) (PVDF), acrylonitrile (AN), acrylamide (AAm), p-styrenesulfonate (NaSS), glycerol, and zinc chloride. In detail, the dipolar interaction of the PVDF chain with the PAN chain facilitates the crystal phase transition of PVDF from the α to β phase, which endows the organohydrogels with a high piezoelectric constant d 33 of 35 pC/N. In addition, the organohydrogels are highly ductile and can withstand significant tensile and compressive forces through the synergy of the dipolar interaction and amide hydrogen bonding. Besides, by incorporating glycerol and zinc chloride, the growth of ice crystals is inhibited, allowing the organohydrogels to maintain stable flexibility and sensitivity even at −20 °C. The real-time monitoring of the pulse signal for up to 2 min indicates that the gel sensor has stable sensitivity. It is believed that our organohydrogels will have good prospects in future wearable electronics.

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A stretchable, biocompatible, and self-powered hydrogel multichannel wireless sensor system based on piezoelectric barium titanate nanoparticles for health monitoring

Cited by 28 publications

References 38 publications

Perspectives on recent advancements in energy harvesting, sensing and bio-medical applications of piezoelectric gels

Perspectives on recent advancements in energy harvesting, sensing and bio-medical applications of piezoelectric gels

Wireless Technologies in Flexible and Wearable Sensing: From Materials Design, System Integration to Applications

Tough, Antifreezing, and Piezoelectric Organohydrogel as a Flexible Wearable Sensor for Human–Machine Interaction

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