Flexible Strain Sensor Based on a Dual Crosslinked Network of PAMgA/GL/PANI Antifreeze Conductive Hydrogel DOI
Kai Wang, Yutong Zhang,

Jiankang Hu

et al.

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract Conductive hydrogels possess excellent flexibility, conductivity, and sensing properties, making them important carrier materials for flexible strain sensors. They show promising application prospects in fields such as human motion detection artificial intelligence. This paper introduces polyaniline (PANI) glycerol (GL) into the magnesium acrylate (AMgA) monomer prepares polymagnesium acrylate/glycerol/polyaniline (PAMgA/GL/PANI) hydrogel by free radical polymerization method. When addition of PANI is 9 wt.%, PAMgA/GL/PANI exhibits good mechanical with a tensile strength 0.385 MPa, an elongation at break up to 505%, compressive 1.04 its room temperature conductivity 1.437 S m −1 . Even after freezing −20 °C, can still reach 1.254 deformation this conductive reaches 500%, gauge factor (GF) 10.33. In addition, also has self‐healing, adhesion, moisture retention. These characteristics make it suitable sensor that not only accurately monitor joint movements subtle physiological signals but serve encrypted information transmission medium.

Language: Английский

High‐Conductivity, Self‐Healing, and Adhesive Ionic Hydrogels for Health Monitoring and Human‐Machine Interactions Under Extreme Cold Conditions DOI Creative Commons
Fei Han, Shumeng Chen, Fei Wang

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract Ionic conductive hydrogels (ICHs) are emerging as key materials for advanced human‐machine interactions and health monitoring systems due to their unique combination of flexibility, biocompatibility, electrical conductivity. However, a major challenge remains in developing ICHs that simultaneously exhibit high ionic conductivity, self‐healing, strong adhesion, particularly under extreme low‐temperature conditions. In this study, novel ICH composed sulfobetaine methacrylate, methacrylic acid, TEMPO‐oxidized cellulose nanofibers, sodium alginate, lithium chloride is presented. The hydrogel designed with hydrogen‐bonded chemically crosslinked network, achieving excellent conductivity (0.49 ± 0.05 S m −1 ), adhesion (36.73 2.28 kPa), self‐healing capacity even at −80 °C. Furthermore, the maintain functionality over 45 days, showcasing outstanding anti‐freezing properties. This material demonstrates significant potential non‐invasive, continuous monitoring, adhering conformally skin without signal crosstalk, enabling real‐time, high‐fidelity transmission cryogenic These offer transformative next generation multimodal sensors, broadening application possibilities harsh environments, including weather outer space.

Language: Английский

Citations

10
Neural Network-Assisted Carbon Nanotube Hydrogel-Based Dual-modal Sensors for Material Perception DOI

Sizhi Zeng,

Yihan Qiu,

Qinglu Peng

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178534 - 178534

Published: Jan. 1, 2025

Language: Английский

Citations

2
Bio‐Inspired Highly Stretchable and Ultrafast Autonomous Self‐Healing Supramolecular Hydrogel for Multifunctional Durable Self‐Powered Wearable Devices DOI Open Access

Yuntao Fu,

Xugang Dang

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Abstract As skin bioelectronics advances, hydrogel wearable devices have broadened perspectives in environment sensing and health monitoring. However, their application is severely hampered by poor mechanical self‐healing properties, environmental sensitivity, limited sensory functions. Herein, inspired the hierarchical structure unique cross‐linking mechanism of hagfish slime, a self‐powered supramolecular hereby reported, featuring high stretchability (>2800% strain), ultrafast autonomous capabilities (electrical healing time: 0.3 s), self‐adhesiveness (adhesion strength: 6.92 kPa), injectability, ease shaping, antimicrobial biocompatibility. It observed that embedding with highly hygroscopic salt LiCl hydrogel, not only showed excellent electrical conductivity but also presented favorable anti‐freezing water retention properties extremely cold environments natural settings. Given these attributes, served as multifunctional durable device sensitivity (gauge factor: 3.68), fast response time (160 ms), low detection limit, frequency sensitivity. Moreover, applicability this further demonstrated long‐term sensing, remote medical communication, underwater communication. Overall, findings pave way for sustainable development hydrogel‐based are self‐powered, durable, offer performance, adaptability, multi‐sensory capabilities.

Language: Английский

Citations

1
Enhancing Robotic Hand Control with Electronic Slime-Based Flexible Finger Joint Motion Sensor DOI
Yu Feng, Hui Sun, Meng Chen

et al.

Lecture notes in computer science, Journal Year: 2025, Volume and Issue: unknown, P. 388 - 399

Published: Jan. 1, 2025

Language: Английский

Citations

0
Liquid-bodied antibiofilm robot with switchable viscoelastic response for biofilm eradication on complex surface topographies DOI Creative Commons
Bonan Sun,

Junjia Guo,

Bo Hao

et al.

Science Advances, Journal Year: 2025, Volume and Issue: 11(11)

Published: March 12, 2025

Recalcitrant biofilm infections pose a great challenge to human health. Micro- and nanorobots have been used eliminate in hard-to-reach regions inside the body. However, applying antibiofilm robots under physiological conditions is limited by conflicting demands of accessibility driving force. Here, we introduce liquid-bodied robot constructed dynamically cross-linked magnetic hydrogel. Leveraging viscoelastic response enables it adapt complex surface topographies such as medical meshes stents. Upon actuation, can mechanically destroy matrix, chemically deactivate bacterial cells, collect disrupted debris. The robot’s performance studied vitro demonstrated on mesh biliary stent. Tracking navigation endoscopy x-ray imaging an ex vivo porcine bile duct are demonstrated. Last, treatment conducted indwelling infected stents into mice’s abdominal cavity clearing infection using proposed robot.

Language: Английский

Citations

0
Erasable and Multifunctional On-Skin Bioelectronics Prepared by Direct Writing DOI

Xintao Zhu,

Wei Liu,

Qinzhou Luo

et al.

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

The field of bioelectronics has witnessed significant advancements, offering practical solutions for personalized healthcare through the acquisition and analysis skin-based physical, chemical, electrophysiological signals. Despite these current face several challenges, including complex preparation procedures, poor skin adherence, susceptibility to motion artifacts, limited personalization reconfigurability capabilities. In this study, we introduce an innovative method fabricating erasable on a flexible substrate coating adhered using ballpoint pen without any postprocessing. Our approach yields devices that are thin, erasable, reconfigurable, dry-friction resistant, self-healing, highly customizable. We demonstrate multifunctionality on-skin their application as strain sensors monitoring, temperature humidity breath heating elements target point hyperthermia. potential our in medicine is substantial, particularly health monitoring. provide novel solution achieving efficient convenient medical services, addressing limitations existing technologies paving way next-generation wearable devices.

Language: Английский

Citations

0
Flexible Strain Sensor Based on a Dual Crosslinked Network of PAMgA/GL/PANI Antifreeze Conductive Hydrogel DOI
Kai Wang, Yutong Zhang,

Jiankang Hu

et al.

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract Conductive hydrogels possess excellent flexibility, conductivity, and sensing properties, making them important carrier materials for flexible strain sensors. They show promising application prospects in fields such as human motion detection artificial intelligence. This paper introduces polyaniline (PANI) glycerol (GL) into the magnesium acrylate (AMgA) monomer prepares polymagnesium acrylate/glycerol/polyaniline (PAMgA/GL/PANI) hydrogel by free radical polymerization method. When addition of PANI is 9 wt.%, PAMgA/GL/PANI exhibits good mechanical with a tensile strength 0.385 MPa, an elongation at break up to 505%, compressive 1.04 its room temperature conductivity 1.437 S m −1 . Even after freezing −20 °C, can still reach 1.254 deformation this conductive reaches 500%, gauge factor (GF) 10.33. In addition, also has self‐healing, adhesion, moisture retention. These characteristics make it suitable sensor that not only accurately monitor joint movements subtle physiological signals but serve encrypted information transmission medium.

Language: Английский

Citations

2