Highly Sensitive and Robust Polysaccharide-Based Composite Hydrogel Sensor Integrated with Underwater Repeatable Self-Adhesion and Rapid Self-Healing for Human Motion Detection

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(21), P. 24741 - 24754

Published: May 17, 2022

Tough, biocompatible, and conductive hydrogel-based strain sensors are attractive in the fields of human motion detection wearable electronics, whereas it is still a great challenge to simultaneously integrate underwater adhesion self-healing properties into one hydrogel sensor. Here, highly stretchable, sensitive, multifunctional polysaccharide-based dual-network sensor was constructed using dialdehyde carboxymethyl cellulose (DCMC), chitosan (CS), poly(acrylic acid) (PAA), aluminum ions (Al3+). The obtained DCMC/CS/PAA (DCP) composite hydrogels exhibit robust mechanical strength good adhesive properties, due reversible dynamic chemical bonds physical interactions such as Schiff base metal coordination. conductivity 2.6 S/m, sensitivity (gauge factor (GF)) up 15.56. Notably, DCP shows excellent repeatable animal tissues water (self-healing rate > 90%, time < 10 min). can sensitively monitor including finger bending, smiling, wrist pulse, steadily detect movement underwater. This work expected provide new strategy for design high-performance intelligent sensors, particularly applications wet environments.

Language: Английский

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Antibacterial Dual Network Hydrogels for Sensing and Human Health Monitoring

Advanced Healthcare Materials, Journal Year: 2021, Volume and Issue: 10(21)

Published: Aug. 28, 2021

Polymer-based conductive hydrogels have the synergistic advantages of high conductivity and tissue-like properties, making them promising candidates for construction flexible electronic devices. However, hydrogel materials can easily absorb microorganisms due to their water content. To address problem that are susceptible infection by external pathogens when monitoring wounds used in implanted organs, tannic acid-borax (TA-B) complexes introduced into classical dual network polyacrylamide/agarose (PAM/Agar) form PAM/Agar/TA-B conductors. These antibacterial good mechanical light transmission, electrical conductivity, adhesion. TA-B increases compressive stress 58.14% compared a PAM/Agar hydrogel. The be as an conductor skin wearable sensors. Outstanding biocompatibility allows device at monitor heartbeat, wounds, internal tissue status real time. In summary, strain sensing matrix is safe human health developed.

Language: Английский

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Stretchable, Adhesive, Self-Healable, and Conductive Hydrogel-Based Deformable Triboelectric Nanogenerator for Energy Harvesting and Human Motion Sensing

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(7), P. 9126 - 9137

Published: Feb. 14, 2022

Hydrogels that combine the integrated attributes of being adhesive, self-healable, deformable, and conductive show great promise for next-generation soft robotic/energy/electronic applications. Herein, we reported a dual-network polyacrylamide (PAAM)/poly(acrylic acid) (PAA)/graphene (GR)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) (MAGP) hydrogel composed dual-cross-linked PAAM PAA as well PEDOT:PSS GR conducting component combines these features. A wearable strain sensor is fabricated by sandwiching MAGP hydrogels between two dielectric carbon nanotubes (CNTs)/poly(dimethylsiloxane) (PDMS) layers, which can be utilized to monitor delicate vigorous human motion. In addition, hydrogel-based act deformable triboelectric nanogenerator (D-TENG) harvesting mechanical energy. The D-TENG demonstrates peak output voltage current 141 V 0.8 μA, respectively. could easily light 52 yellow-light-emitting diodes (LEDs) simultaneously demonstrated capability power small electronics, such hygrometer thermometer. This work provides potential approach development energy sources self-powered sensors.

Language: Английский

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Tough, Repeatedly Adhesive, Cyclic Compression-Stable, and Conductive Dual-Network Hydrogel Sensors for Human Health Monitoring

Industrial & Engineering Chemistry Research, Journal Year: 2021, Volume and Issue: 60(50), P. 18373 - 18383

Published: Dec. 8, 2021

Hydrogel-based flexible wearable devices have attracted wide attention from researchers due to their great potential application in human–computer interaction, electronic skin, and disease diagnosis. However, the preparation of conductive hydrogels integrating good biocompatibility, excellent mechanical (tensile compressible) properties, self-adhesive cyclic stretching, compression stability remains a challenge. By Schiff base reaction between dialdehyde carboxymethyl cellulose amino gelatin form first layer network by free-radical polymerization acrylic acid second network, multifunctional dual-network (DN) hydrogel strain sensor was prepared. The composite DN has properties (the strength reached 0.12 MPa when compressed 50% its original height), (≥10 000 times), repeatable adhesion reliable electrical conductivity, high sensitivity (gauge factor = 8.1). biocompatible can be used not only monitor human body movement but also detect breathing simulated pig lungs vitro. Furthermore, creatively made into plantar pressure similar an insole stress on sole flatfoot patient, providing new material for detection correction.

Language: Английский

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Dual-network polyacrylamide/carboxymethyl chitosan-grafted-polyaniline conductive hydrogels for wearable strain sensors

Carbohydrate Polymers, Journal Year: 2022, Volume and Issue: 295, P. 119848 - 119848

Published: July 8, 2022

Language: Английский

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Stretchable, compressible, and conductive hydrogel for sensitive wearable soft sensors

Journal of Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 618, P. 111 - 120

Published: March 10, 2022

Language: Английский

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Flexible and wearable strain sensors based on conductive hydrogels

Journal of Polymer Science, Journal Year: 2022, Volume and Issue: 60(18), P. 2663 - 2678

Published: Feb. 18, 2022

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

Language: Английский

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Recent progress in conductive self‐healing hydrogels for flexible sensors

Journal of Polymer Science, Journal Year: 2022, Volume and Issue: 60(18), P. 2607 - 2634

Published: Jan. 28, 2022

Abstract Flexible sensors have great potential in the application of wearable and implantable devices, conductive hydrogels been widely used sensing devices due to their biomimetic structure, biocompatibility, adjustable transparency stimuli‐responsive electrical properties. Conventional are prone be damaged process lack long‐term reliability. Inspired by natural organisms such as mussels, introduction self‐healing capabilities has regarded a promising approach extend service life hydrogel devices. This work reviews synthesis methods associated mechanisms representative hydrogels. The principles structural design also reviewed applications for vivo / vitro signal monitoring introduced. remaining challenges perspectives this field discussed order direct future research on integration capabilities, good properties excellent mechanical performances into flexible sensors.

Language: Английский

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Environment-tolerant versatile ion-conductive eutectic hydrogels for self-powered wearable flexible sensors

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 463, P. 142349 - 142349

Published: March 9, 2023

Language: Английский

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Zinc-ion engineered Plant-based multifunctional hydrogels for flexible wearable strain Sensors, Bio-electrodes and Zinc-ion hybrid capacitors

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 465, P. 142917 - 142917

Published: April 12, 2023

Language: Английский

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