Ultra‐stretchable, super‐tough, and highly stable ion‐doped hydrogel for advanced robotic applications and human motion sensing DOI Creative Commons
Masoud Hasany, Mohammad Kohestanian, Azar Najafi Tireh Shabankareh

и другие.

InfoMat, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Abstract Hydrogel‐based sensors are recognized as key players in revolutionizing robotic applications, healthcare monitoring, and the development of artificial skins. However, primary challenge hindering commercial adoption hydrogel‐based is their lack high stability, which arises from water content within hydrogel structure, leading to freezing at subzero temperatures drying issues if protective layer compromised. These factors result a significant decline benefits offered by aqueous gel electrolytes, particularly terms mechanical properties conductivity, crucial for flexible wearable electronics. Previous reports have highlighted several disadvantages associated with using cryoprotectant co‐solvents lower ion‐doped anti‐freezing sensors. In this study, design optimization photocrosslinkable ionic utilizing silk methacrylate novel natural crosslinker presented. This innovative demonstrates significantly enhanced properties, including stretchability (>1825%), tensile strength (2.49 MPa), toughness (9.85 MJ m – 3 ), resilience (4% hysteresis), compared its non‐ion‐doped counterpart. Additionally, exhibits exceptional nonfreezing behavior down −85°C, anti‐drying functional stability up 2.5 years, signal drift only 5.35% over 2450 cycles, whereas control variant, resembling commonly reported hydrogels, 149.8%. The successful application developed advanced robotics, combined pioneering demonstration combinatorial commanding single sensor, could potentially revolutionize sensor design, elevating it next level benefiting various fields. image

Язык: Английский

Skin‐Like Transparent, High Resilience, Low Hysteresis, Fatigue‐Resistant Cellulose‐Based Eutectogel for Self‐Powered E‐Skin and Human–Machine Interaction DOI
Chuanwei Lu, Xinyu Wang, Yi Shen

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 34(13)

Опубликована: Дек. 14, 2023

Abstract Artificial electronic skin (E‐skin), a class of promising materials mimicking the physical‐chemical and sensory performance human skin, has gained extensive interest in field health‐monitoring robotic skins. However, developing E‐skin simultaneously achieving high resilience, hysteresis‐free, absent external power is always formidable challenge. Herein, liquid‐free eutectic gel‐based self‐powered with fatigue resistance, conductivity prepared by introducing hydroxypropyl cellulose (HPC) into metal salt‐based deep solvents (MDES). The unique structural design cellulose‐anchored permanent entangled poly(acrylic acid) (PAA) chain, combination rapid broken/reconstruction dense dynamic sacrificial bonds, realizes fabrication high‐elastic negligible hysteresis. This further demonstrates practical application cellulose‐based eutectogel transmittance (92%), (36.6 mS m −1 ), resilience (98.1%), excellent environment stability robust triboelectric nanogenerator for energy harvesting health‐caring human‐machine interaction.

Язык: Английский

Процитировано

59
More is better: high-entropy electrolyte design in rechargeable batteries DOI
Xin Zhao, Zhiqiang Fu, Xiang Zhang

и другие.

Energy & Environmental Science, Год журнала: 2024, Номер 17(7), С. 2406 - 2430

Опубликована: Янв. 1, 2024

This review conducts a comprehensive survey of the high-entropy effect on key properties electrolytes. The applications electrolytes in various rechargeable batteries are presented to address their critical drawbacks.

Язык: Английский

Процитировано

57
Anti-freezing, tough, and stretchable ionic conductive hydrogel with multi-crosslinked double-network for a flexible strain sensor DOI

Daiwei Chen,

Huiyu Bai, Haiyan Zhu

и другие.

Chemical Engineering Journal, Год журнала: 2023, Номер 480, С. 148192 - 148192

Опубликована: Дек. 20, 2023

Язык: Английский

Процитировано

46
Cellulose‐Based Dual‐Network Conductive Hydrogel with Exceptional Adhesion DOI
Haoran Shi,

Huanxin Huo,

Hongxing Yang

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер 34(48)

Опубликована: Июль 25, 2024

Abstract Cellulose consists of a natural, rigid polymer that is widely used to improve the mechanical and water‐holding properties hydrogels. However, its abundant hydroxyl groups make it highly absorbent free water, leading swelling behavior. This increased water content will also decrease adhesive performance. In this study, cellulose successfully hydrophobically modified reduce absorption water. Gelatin then cross‐linked with through Schiff‐base reaction, resulting in bound content. significantly enhances resistance permeability, improves freeze–thaw stability hydrogel. Due internal hydrophobicity, molecules can quickly penetrate into interior, reducing their residence time on hydrogel surface. allows maintain high adhesion natural environments, achieving an strength up 3.0 MPa wood bamboo‐based materials. The retain even after prolonged exposure humid environment. Additionally, Na + ions enhance electrical conductivity sensitivity (gauge factor (GF) = 1.51), demonstrating potential applications flexible sensing.

Язык: Английский

Процитировано

28
Structuring and Shaping of Mechanically Robust and Functional Hydrogels toward Wearable and Implantable Applications DOI
Xiao‐Qiao Wang, An‐Quan Xie,

Pengle Cao

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(23)

Опубликована: Фев. 23, 2024

Abstract Hydrogels possess unique features such as softness, wetness, responsiveness, and biocompatibility, making them highly suitable for biointegrated applications that have close interactions with living organisms. However, conventional man‐made hydrogels are usually soft brittle, inferior to the mechanically robust biological hydrogels. To ensure reliable durable operation of wearable implantable devices, mechanical matching shape adaptivity tissues organs essential. Recent advances in polymer science processing technologies enabled engineering shaping various applications. In this review, network structuring strategies at micro/nanoscales toughening summarized, representative functionalities exist materials but not easily achieved synthetic further discussed. Three categories technologies, namely, 3D printing, spinning, coating fabrication tough hydrogel constructs complex shapes reviewed, corresponding also highlighted. These developments enable adaptive functional promote application fields biomedical engineering, bioelectronics, robotics.

Язык: Английский

Процитировано

27
UV-induced ferric phytate access to fast gelation of conductive and anti-freezing hydrogels for cryogenic strain sensing DOI
Yue Yang,

Yimeng Ni,

Huicai Wang

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 482, С. 148847 - 148847

Опубликована: Янв. 17, 2024

Язык: Английский

Процитировано

25
Time-Salt Type Superposition and Salt Processing of Poly(methacrylamide) Hydrogel based on Hofmeister Series DOI
Yijie Jin, Shan Lu, Xinran Chen

и другие.

Macromolecules, Год журнала: 2024, Номер 57(6), С. 2746 - 2755

Опубликована: Фев. 22, 2024

Breakthrough to the extreme properties of polymer networks relies on new insights into their molecular dynamics. Time-salt concentration superposition has been discovered in polyelectrolyte coacervate systems, proving instrumental tuning mechanical performance hydrogels. However, time-salt type never mentioned existing literature. Herein, we reported that poly(methacrylamide) (PMAm) hydrogel can be systematically regulated a vast range by treating with different salts, for example, Young's modulus tuned from 10–2 103 MPa. The unusual behavior salt-stiffening arises salt-enhanced phase separation network and subsequent glassy transition polymer-rich phase. Rheological results demonstrate dynamic hydrogels superposed onto "time-salt type" master curves salt types aligning along Hofmeister series. shift factor exhibits correlation mobility water molecules as revealed low-field nuclear magnetic resonance spectroscopy. A polymer–water–salt ternary interaction mechanism was proposed elucidate equivalent behavior. Guided principle, processing strategy brought up expand property limits PMAm hydrogel. With simply switching employed, could either stiff wear-resistant material akin plastics or soft flowable gel utilizable recycling.

Язык: Английский

Процитировано

25
Tough and Strain-Sensitive Organohydrogels Based on MXene and PEDOT/PSS and Their Effects on Mechanical Properties and Strain-Sensing Performance DOI

Dejin Bi,

Na Qu, Weiqin Sheng

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(9), С. 11914 - 11929

Опубликована: Фев. 21, 2024

Conductive hydrogels have shown promising application prospects in the field of flexible sensors, but they often suffer from poor mechanical properties, low sensitivity, and lack frost resistance. Herein, we report a tough, highly sensitive, antifreeze strain sensor assembled conductive organohydrogel composed dual-cross-linked polyacrylamide poly(vinyl alcohol) (PVA) network, as well MXene nanosheets nanofillers poly(3,4-ethylenedioxythiophene)-doped poly(styrenesulfonate) (PEDOT/PSS) main conducting component (PPMP-OH organohydrogel). The tensile strength toughness PPMP-OH had been greatly enhanced by due to reinforcement nanosheets, various strong noncovalent interactions formed organohydrogels. PPM1P-OH organohydrogels showed 1.48 MPa at 772% 5.59 MJ/m3. Moreover, conductivity strain-sensing performance were significantly improved PEDOT/PSS, which can form hydrogen bonds with PVA electrostatic MXene. This was beneficial for constructing uniformly distributed stable 3D network helped obtain strain-dependent resistance PPMP-OH. sensors PPMP1-OH exhibited high sensitivity 5.16, wide range detectable strains up 500%, short response time 122 ms, effectively detect physiological activities human body stability. In addition, corresponding pressure array also identifying magnitude position.

Язык: Английский

Процитировано

25
Multi‐Functional Integration of Phosphor, Initiator, and Crosslinker for the Photo‐Polymerization of Flexible Phosphorescent Polymer Gels DOI

Yanyan Cao,

Dan Wang, Yongfeng Zhang

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(18)

Опубликована: Март 8, 2024

A general approach to constructing room temperature phosphorescence (RTP) materials involves the incorporation of a phosphorescent emitter into rigid host or polymers with high glass transition temperature. However, these often suffer from poor processability and suboptimal mechanical properties, limiting their practical applications. In this work, we developed benzothiadiazole-based dialkene (BTD-HEA), multifunctional remarkable yield intersystem crossing (Φ

Язык: Английский

Процитировано

22
Hydro-locking in hydrogel for extreme temperature tolerance DOI
Xiaochen Zhang, Dong Li, Xuxu Yang

и другие.

Science, Год журнала: 2025, Номер 387(6737), С. 967 - 973

Опубликована: Фев. 27, 2025

Hydrogels consist of cross-linked polymers that are highly swollen with water. Water evaporation or freezing during temperature changes may lead to stiff and brittle hydrogels. We introduce a strategy called “hydro-locking,” which involves immobilizing the water molecules within polymer network hydrogel. This is accomplished by establishing robust connections between using sulfuric acid. A sacrificial introduced shield prime from collapsing. Under hydro-locking mode, an alginate-polyacrylamide double-network hydrogel remains soft stretchable range spans –115° 143°C. The works hydrogels solutions enable preservation observation materials even living organisms at extreme temperatures.

Язык: Английский

Процитировано

10