Citation: Mengchen Liu, Yufei Zhang, Yi Xiao, Yang Wei, Meichen Bi, Huaide Jiang, Yan Yu, Shenghong Zhong. High stretchability and toughness of liquid metal reinforced conductive biocompatible hydrogels for flexible strain sensors[J]. Chinese Journal of Structural Chemistry, ;2025, 44(3): 100518. doi: 10.1016/j.cjsc.2025.100518 shu

High stretchability and toughness of liquid metal reinforced conductive biocompatible hydrogels for flexible strain sensors

Hydrogels possess significant potential for the development of multifunctional soft materials in smart sensors and wearable devices, attributed to their distinctive properties of softness, conductivity, and biocompatibility. Nevertheless, their widespread application is frequently limited by inadequate mechanical strength and strain capacity. This study introduces a meticulously engineered hydrogel system, LM/SA/P(AAM-co-BMA), which integrates eutectic gallium-indium alloy (EGaIn) as both a polymerization initiator and a flexible filler. The resultant hydrogel demonstrates remarkable tensile strain capabilities of up to 2800% and a tensile strength of 2.3 MPa, achieved through a synergistic interplay of ionic coordination, hydrogen bonding, and physical polymer interactions. Furthermore, the hydrogel exhibits outstanding biocompatibility, recyclability, and stable long-term storage, rendering it an ideal candidate for the continuous monitoring of high-intensity physical activities.
- Liquid metal,
- Hydrogel,
- Mechanical properties,
- Strain sensor
1. [1]
  Tong Zhang , Xiaojing Liang , Licheng Wang , Shuai Wang , Xiaoxiao Liu , Yong Guo . An ionic liquid assisted hydrogel functionalized silica stationary phase for mixed-mode liquid chromatography. Chinese Chemical Letters, 2025, 36(1): 109889-. doi: 10.1016/j.cclet.2024.109889
2. [2]
  Xi Chen , Xue Zhang , Shuai Yang , Jie Wang , Tian Tang , Maling Gou . An adhesive hydrogel for the treatment of oral ulcers. Chinese Chemical Letters, 2025, 36(3): 110021-. doi: 10.1016/j.cclet.2024.110021
3. [3]
  Ningyue Xu , Jun Wang , Lei Liu , Changyang Gong . Injectable hydrogel-based drug delivery systems for enhancing the efficacy of radiation therapy: A review of recent advances. Chinese Chemical Letters, 2024, 35(8): 109225-. doi: 10.1016/j.cclet.2023.109225
4. [4]
  Ningning Gao , Yue Zhang , Zhenhao Yang , Lijing Xu , Kongyin Zhao , Qingping Xin , Junkui Gao , Junjun Shi , Jin Zhong , Huiguo Wang . Ba²⁺/Ca²⁺ co-crosslinked alginate hydrogel filtration membrane with high strength, high flux and stability for dye/salt separation. Chinese Chemical Letters, 2024, 35(5): 108820-. doi: 10.1016/j.cclet.2023.108820
5. [5]
  Yang Xu , Le Ma , Yang Wang , Chunmeng Shi . Engineering strategies of biomaterial-assisted exosomes for skin wound repair: Latest advances and challenges. Chinese Chemical Letters, 2025, 36(1): 109766-. doi: 10.1016/j.cclet.2024.109766
6. [6]
  Yue Sun , Yingnan Zhu , Jiahang Si , Ruikang Zhang , Yalan Ji , Jinjie Fan , Yuze Dong . Glucose-activated nanozyme hydrogels for microenvironment modulation via cascade reaction in diabetic wound. Chinese Chemical Letters, 2025, 36(4): 110012-. doi: 10.1016/j.cclet.2024.110012
7. [7]
  Chengyi Xiao , Xiaoli Sun , Chen Zhang , Weiwei Li . An In-Depth Analysis of the Scientific Connotations, Testing Methods, and Applications of Free Volume in Polymer Physics. University Chemistry, 2025, 40(4): 33-45. doi: 10.12461/PKU.DXHX202403069
8. [8]
  Jiajia Wang , XinXin Ge , Yajing Xiang , Xiaoliang Qi , Ying Li , Hangbin Xu , Erya Cai , Chaofan Zhang , Yulong Lan , Xiaojing Chen , Yizuo Shi , Zhangping Li , Jianliang Shen . An ionic liquid functionalized sericin hydrogel for drug-resistant bacteria-infected diabetic wound healing. Chinese Chemical Letters, 2025, 36(2): 109819-. doi: 10.1016/j.cclet.2024.109819
9. [9]
  Qiang Zhou , Pingping Zhu , Wei Shao , Wanqun Hu , Xuan Lei , Haiyang Yang . Innovative Experimental Teaching Design for 3D Printing High-Strength Hydrogel Experiments. University Chemistry, 2024, 39(6): 264-270. doi: 10.3866/PKU.DXHX202310064
10. [10]
  Qingyang Cui , Feng Yu , Zirun Wang , Bangkun Jin , Wanqun Hu , Wan Li . From Jelly to Soft Matter: Preparation and Properties-Exploring of Different Kinds of Hydrogels. University Chemistry, 2024, 39(9): 338-348. doi: 10.3866/PKU.DXHX202309046
11. [11]
  Dongmei Yao , Junsheng Zheng , Liming Jin , Xiaomin Meng , Zize Zhan , Runlin Fan , Cong Feng , Pingwen Ming . Effect of surface oxidation on the interfacial and mechanical properties in graphite/epoxy composites composite bipolar plates. Chinese Chemical Letters, 2024, 35(11): 109382-. doi: 10.1016/j.cclet.2023.109382
12. [12]
  Yuqing Ding , Zhiying Yi , Zhihui Wang , Hongyu Chen , Yan Zhao . Liquid nitrogen post-treatment for improved aggregation and electrical properties in organic semiconductors. Chinese Chemical Letters, 2024, 35(12): 109918-. doi: 10.1016/j.cclet.2024.109918
13. [13]
  Ying Chen , Li Li , Junyao Zhang , Tongrui Sun , Xuan Zhang , Shiqi Zhang , Jia Huang , Yidong Zou . Tailored ionically conductive graphene oxide-encased metal ions for ultrasensitive cadaverine sensor. Chinese Chemical Letters, 2024, 35(8): 109102-. doi: 10.1016/j.cclet.2023.109102
14. [14]
  Xiangshuai Li , Jian Zhao , Li Luo , Zhuohao Jiao , Ying Shi , Shengli Hou , Bin Zhao . Visual and portable detection of metronidazole realized by metal-organic framework flexible sensor and smartphone scanning. Chinese Chemical Letters, 2024, 35(10): 109407-. doi: 10.1016/j.cclet.2023.109407
15. [15]
  Yijian Zhao , Jvzhe Li , Yunyi Shi , Jie Hu , Meiyi Liu , Yao Shen , Xinglin Hou , Qiuyue Wang , Qi Wang , Zhiyi Yao . A label-free and ratiometric fluorescent sensor based on porphyrin-metal-organic frameworks for sensitive detection of ochratoxin A in cereal. Chinese Chemical Letters, 2025, 36(4): 110132-. doi: 10.1016/j.cclet.2024.110132
16. [16]
  Wenhao Yan , Shuaiya Xue , Xuerui Zhao , Wei Zhang , Jian Li . Hexagonal boron nitride based slippery liquid infused porous surface with anti-corrosion, anti-contaminant and anti-icing properties for protecting magnesium alloy. Chinese Chemical Letters, 2024, 35(4): 109224-. doi: 10.1016/j.cclet.2023.109224
17. [17]
  Xiaoliu Liang , Chunliu Huang , Hui Liu , Hu Chen , Jiabao Shou , Hongwei Cheng , Gang Liu . Natural hydrogel dressings in wound care: Design, advances, and perspectives. Chinese Chemical Letters, 2024, 35(10): 109442-. doi: 10.1016/j.cclet.2023.109442
18. [18]
  Guilong Li , Wenbo Ma , Jialing Zhou , Caiqin Wu , Chenling Yao , Huan Zeng , Jian Wang . A composite hydrogel with porous and homogeneous structure for efficient osmotic energy conversion. Chinese Chemical Letters, 2025, 36(2): 110449-. doi: 10.1016/j.cclet.2024.110449
19. [19]
  Ning Zhang , Mengjie Qin , Jiawen Zhu , Xuejing Lou , Xiao Tian , Wende Ma , Youmei Wang , Minghua Lu , Zongwei Cai . Thickness-controllable synthesis of metal-organic framework based hollow nanoflowers with magnetic core via liquid phase epitaxy for phosphopeptides enrichment. Chinese Chemical Letters, 2025, 36(4): 110177-. doi: 10.1016/j.cclet.2024.110177
20. [20]
  Xiaoxia WANG , Ya'nan GUO , Feng SU , Chun HAN , Long SUN . Synthesis, structure, and electrocatalytic oxygen reduction reaction properties of metal antimony-based chalcogenide clusters. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1201-1208. doi: 10.11862/CJIC.20230478

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