High-Performance Conductive Hydrogel Prepared by an Electrohydrodynamic Printing Method for Strain Sensors and Self-Powered Triboelectric Nanogenerator

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

A conductive hydrogel is widely used in flexible electronics, strain sensors, and energy harvesting. However, poor mechanical property, low sensitivity, slow response time limit their application sensors triboelectric nanogenerators (TENG). In order to address these issues, using polyacrylamide (PAM), cellulose nanofibers (CNF), MXene composites as preparation materials, an electrohydrodynamic (EHD) printing method assisted in-situ photopolymerization proposed fabricate a PAM/CNF/MXene (PCM) hydrogel. the precursor solution of orderly arranged under influence electrostatic field force, thereby forming stable channel MXene. Compared with traditional technology, conductivity hydrogels fabricated through this improved by 58%. Hydrogen bond formed between CNF PAM, which improves properties hydrogels. can form interpenetrating networks PAM/CNF hydrogel, providing channels for improving its sensing performance. The structure endows PCM outstanding (550% tensile strain). Strain based on exhibits eminent sensitivity (6.73 gauge factor), rapid response/recovery (100/110 ms), broad detection range (1% ∼ 550%). CM-TENG shows excellent electric output performance (67.5 V open circuit voltage at 100% addition, sensor applied human motion monitoring information transmission, self-powered PCM-TENG writing recognition. has prospects supply.

Language: Английский

---

Biocomposite Polyvinyl Alcohol/Ferritin Hydrogels with Enhanced Stretchability and Conductivity for Flexible Strain Sensors

Gels, Journal Year: 2025, Volume and Issue: 11(1), P. 59 - 59

Published: Jan. 11, 2025

Protein-based hydrogels with stretchability and conductivity have potential applications in wearable electronic devices. However, the development of protein-based biocomposite is still limited. In this work, we used natural ferritin to develop a PVA/ferritin hydrogel by repetitive freeze–thaw method. hydrogel, ferritin, as nano spring, forms hydrogen bond PVA networks, which reduces crystallinity significantly improves hydrogel. The fracture strain 203%, stress 112.2 kPa. toughness enhanced 147.03 kJ/m3, more than 3 times that (39.17 kJ/m3). addition, free residues iron ions endow ionic (0.15 S/m). sensor constructed from shows good sensitivity (gauge factor = 1.7 at 150% strain), accurate real-time resistance response, long cyclic working stability when for joint motion monitoring. results indicate prepared facile method has flexible sensors. This work develops new preparation

Language: Английский

---

Thermoresponsive Hydrogels for the Construction of Smart Windows, Sensors, and Actuators

Accounts of Materials Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Language: Английский

---

Cellulose nanocrystals boosted hydrophobic association in dual network polymer hydrogels as advanced flexible strain sensor for human motion detection

Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials, Journal Year: 2022, Volume and Issue: 138, P. 105610 - 105610

Published: Dec. 7, 2022

Language: Английский

---

Extreme-environment-adapted eutectogel mediated by heterostructure for epidermic sensor and underwater communication

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 638, P. 439 - 448

Published: Feb. 3, 2023

Language: Английский

---

Multi-functional and multi-responsive layered double hydroxide-reinforced polyacrylic acid composite hydrogels as ionic skin sensors

Advanced Composites and Hybrid Materials, Journal Year: 2023, Volume and Issue: 6(2)

Published: March 17, 2023

Language: Английский

---

Flexible Strain Sensor Enabled by Carbon Nanotubes‐Decorated Electrospun TPU Membrane for Human Motion Monitoring

Advanced Materials Interfaces, Journal Year: 2023, Volume and Issue: 10(11)

Published: March 14, 2023

Abstract High‐performance flexible strain sensors are gaining more and attention with their bespoken detection range, excellent sensing performance, good stability, which highly desired in wearable electronics. Herein, a thermoplastic polyurethane elastomer (TPU) fibrous membrane is prepared as substrate by electrostatic spinning technology, then coating of polydopamine formed through fast synthesizing the dopamine on TPU surface loaded carbon nanotubes (CNTs) to develop an extremely sensitive sensor. The sensor coated layer has outstanding sensibility under pulling force (Gauge Factor 10 528.53 200% strain), rapid reaction time (188–221 ms), wide range (up 200%), durability. theoretical studies reveal underlying cause for high sensitivity inherent relationship between amount conducting routes length adjacent fillers demonstration device shows promising application sense human motion at various locations body, accurate stable electrical signal output generated corresponding motion.

Language: Английский

---

Lignin in situ self-assembly facilitates biomimetic multiphase structure for fabricating ultra-strong and tough ionic conductors for wearable pressure and strain sensors

Advanced Composites and Hybrid Materials, Journal Year: 2023, Volume and Issue: 6(3)

Published: April 17, 2023

Language: Английский

---

Self-healable and Robust Silicone Elastomer for Ultrasensitive Flexible Sensors

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(28), P. 10496 - 10508

Published: June 29, 2023

Capturing human motions using wearable electronics provides tremendous opportunities for human–machine interfaces. However, current flexible sensors are always challenged due to the contradiction between self-healing property and mechanical performance of matrix. Moreover, strain sensing range is limited within 5% ineffectiveness conductive components upon larger strain. Inspired by synergistic combination hydrogen bondings metal coordination, a self-healable elastomer was synthesized, which displayed tensile strength 1.73 MPa efficiency 93%. designed sensor synthesized silicone substrate carbon nanotube component high gauge factor 1198 contributed cooperation wrinkle structure microcrack mechanism. The exhibited fast response 129 ms excellent adhesion layer substrate. Furthermore, intelligent gesture capturing system integrating an elastomer-based wireless electronic control module successfully developed realize real-time monitoring hand gestures. Thus, holds potential interfaces novel pathway rehabilitation training.

Language: Английский

---

Graphene/polyacrylamide interpenetrating structure hydrogels for wastewater treatment

Advanced Composites and Hybrid Materials, Journal Year: 2023, Volume and Issue: 6(5)

Published: Sept. 20, 2023

Language: Английский

---