Article
Chemistry, Physical
Congcong Wang, Jingjing Zhang, Chenxi Niu, Qian Fu, Lingbin Lu
Summary: In this study, a dual mechanism-driven strategy was proposed to construct a novel fast self-healing ionic hydrogel. The hydrogel showed excellent self-healing properties, tensile strength, fatigue resistance, and ion-responsive deformation feature. As a sensor on human skin, it demonstrated high sensitivity and the ability to detect various human movements, letter pronunciations, and pulses.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Lijian Xu, Yin Chen, Maolin Yu, Mengjuan Hou, Guo Gong, Haihu Tan, Na Li, Jianxiong Xu
Summary: Flexible conductive hydrogels with self-healing ability were developed by incorporating dopamine-modified polypyrrole-coated antimony sulfide nanorods into a polymer matrix. The resulting hydrogel exhibited high tensile strength, elongation, and interfacial toughness, as well as excellent sensitivity. The integration of antimony sulfide nanorods improved the conductivity and accelerated the self-healing process under near-infrared light irradiation. The multifunctional hydrogel showed potential applications in strain sensing, biopotential electrodes, and energy harvesting.
Article
Polymer Science
Jennika Karvinen, Minna Kellomaki
Summary: Self-healing hydrogels are attractive biomaterials capable of repairing their structure and properties when damaged. However, the lack of standardization in characterization methods makes it challenging to compare different hydrogels. To facilitate comparison and development, a consistent set of characterization methods and more quantitative and theoretical studies are recommended.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Engineering, Environmental
Daihui Zhang, Junyu Jian, Yitong Xie, Shishuai Gao, Zhe Ling, Chenhuan Lai, Jifu Wang, Chunpeng Wang, Fuxiang Chu, Marie-Josee Dumont
Summary: The study successfully fabricated a biocompatible cellulose biomimetic hydrogel with skin-like properties, showing excellent performance in toughness, stretchability, elasticity, and self-stiffness. By utilizing the crystallization behavior of cellulose, the design mimics the skin's structures, limiting water swelling and enabling the preparation of high-performance strain sensors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Baobin Wang, Lin Dai, Lauren Alyssa Hunter, Lei Zhang, Guihua Yang, Jiachuan Chen, Xingye Zhang, Zhibin He, Yonghao Ni
Summary: The study developed a highly stretchable, tough, adhesive, and ion conductive hydrogel with high sensitivity through ionic interactions, showing promising applications in human motion detection and self-powered devices.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Mi Fu, Zhenxuan Sun, Xiaobo Liu, Zhenkai Huang, Guifang Luan, Yutong Chen, Jianping Peng, Kan Yue
Summary: In this study, high-performance ionic hydrogels with excellent mechanical and thermoelectric properties were designed and characterized for the application of converting low-grade waste heat into electricity for wearable electronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Hassan Rammal, Amin GhavamiNejad, Ahmet Erdem, Rene Mbeleck, Mohammad Nematollahi, Sibel Emir Diltemiz, Halima Alem, Mohammad Ali Darabi, Yavuz Nuri Ertas, Edward J. Caterson, Nureddin Ashammakhi
Summary: Hydrogels are essential biomaterials with applications in drug and cell delivery, tissue engineering, 3D printing, sensing, and actuating. The advent of self-healing hydrogels allows for smarter materials with sustainable mechanical properties under stress. The self-healing mechanisms of these materials rely on chemical bonding or physical interactions, but challenges in healing characteristics need to be addressed and investigated before clinical applications.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Nanoscience & Nanotechnology
Xifan Fu, Zihan Zhuang, Yifan Zhao, Binghan Liu, Yutian Liao, Zehua Yu, Peihua Yang, Kang Liu
Summary: This paper presents a stretchable and self-powered temperature-pressure dual functional sensor based on thermogalvanic hydrogels. The sensor operates properly under stretching and has high accuracy in temperature and pressure sensing, making it suitable for accurately recording tactile information on human skin and spatial perception.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Mi Fu, Zhenxuan Sun, Xiaobo Liu, Zhenkai Huang, Guifang Luan, Yutong Chen, Jianping Peng, Kan Yue
Summary: A series of high-performance ionic hydrogels with excellent mechanical and self-healing properties have been designed and characterized for applications in soft thermoelectric generator devices. The ionic hydrogels, composed of physically cross-linked polyacrylic acid and polyethylene glycol networks doped with sodium chloride, can restore their electrochemical and thermoelectric performance immediately from physical damage and completely heal mechanically within 24 hours.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
He Zhang, Jinde He, Ting Peng, Jinqing Qu
Summary: In this study, a multifunctional adhesive hydrogel with conductivity was prepared by copolymerization. The hydrogel exhibited high transparency, ultra-stretchability, high elasticity, fatigue resistance, self-healing, good adhesion in air and water, and electrical conductivity. Addition of metal ions enhanced the mechanical properties and adhesion strength of the hydrogel, and it also showed good biocompatibility and antibacterial properties. Additionally, the hydrogel had shape memory, fluorescent writing, and information transfer functions, and could monitor various motions in real-time.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xue Yao, Sufeng Zhang, Liwei Qian, Ning Wei, Valentin Nica, Sergiu Coseri, Fei Han
Summary: Ionic conductive hydrogels with excellent mechanical properties and versatile characteristics are proposed by incorporating cellulose nanofibrils into a phenylboronic acid-ionic liquid/acrylamide cross-linked network. These hydrogels exhibit remarkable stretchability, toughness, self-healing property, adhesiveness, and transparency, making them promising candidates for constructing gel-based strain sensor platforms.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Applied
Yongyan Yang, Lifeng Xu, Jingfei Wang, Qingye Meng, Shuangling Zhong, Yan Gao, Xuejun Cui
Summary: Hydrogels are polymer materials with three-dimensional networks that can absorb a large amount of water and biological fluids. Self-healing hydrogels, due to their good biocompatibility and biodegradability, have great potential applications in tissue engineering, wound dressings, drug delivery, and other fields.
CARBOHYDRATE POLYMERS
(2022)
Review
Materials Science, Multidisciplinary
Hongyan Yin, Fangfei Liu, Tursun Abdiryim, Xiong Liu
Summary: Due to their good reliability and long-term stability, self-healing hydrogels have become promising soft materials for various applications. The self-healing mechanism relies on reversible chemical or physical cross-linking interactions. Recent progress in synthesis strategies and applications of self-healing hydrogels, including flexible strain sensors, supercapacitors, wound healing, and drug delivery, is summarized in this review. The challenges, future development, and opportunities of self-healing hydrogels are also discussed.
ACS MATERIALS LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Ziyan Wang, Jieyu Gu, Difei Zhang, Yan Zhang, Jinghua Chen
Summary: In this study, a series of multiresponsive hydrogels were prepared by using biocompatible starting materials and a dynamic covalent imine/Diels-Alder network. By further crosslinking with a hyperbranched triethoxysilane reagent, the hydrogels exhibited strengthened self-healing and temperature-responsive shape memory effect. With superior stretchability, good cytocompatibility, and 3D printable properties, these multifunctional hydrogels showed great potential for broad biomedical applications.
Article
Polymer Science
Di Cao, Yukai Lv, Qian Zhou, Yulong Chen, Xin Qian
Summary: Hydrogel-based strain sensors with interpenetrating network (IPN) structure, incorporating borate and hydrogen bonds, exhibit excellent tensile properties and self-healing capabilities.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Multidisciplinary Sciences
David Hardman, Thomas George Thuruthel, Fumiya Iida
Summary: This study presents a methodology for manipulating free-floating objects using large-scale physical experimentation and recent advances in deep reinforcement learning. The results show the potential of data-driven approaches for solving and analyzing highly complex nonlinear control problems.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Analytical
David Hardman, Thomas George Thuruthel, Antonia Georgopoulou, Frank Clemens, Fumiya Iida
Summary: This study presents a complete framework for the fabrication of soft sensory fiber networks using 3D printing of piezoresistive elastomers, allowing for contact localization. Machine learning is utilized for contact localization, achieving good accuracy even in the presence of damage and nonlinear material properties. The potential of the networks to function as capacitive sensors is also demonstrated.
Article
Robotics
David Hardman, Josie Hughes, Thomas George Thuruthel, Kieran Gilday, Fumiya Iida
Summary: The ability to 3D print soft materials with integrated strain sensors allows for flexibility in designing and fabricating soft robots. By using hydrogels and incorporating electron-conductive elements, highly flexible and linear soft strain sensors can be created. This study successfully optimized a desktop 3D printer to fabricate sensorized 2D and 3D structures that exhibit >300% strain and show a highly linear and synchronous response to strain.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2021)
