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Article
Chemistry, Multidisciplinary
Desheng Liu et al.
Summary: In this study, a novel tactic of salting-out-after-syneresis of PVA is proposed to create mechanically robust and highly transparent slippery PVA hydrogels. These hydrogels exhibit excellent mechanical properties and have the potential for various applications in biomedicine and wearable devices.
Article
Chemistry, Physical
Xiaohui Zhang et al.
Summary: Researchers have successfully fabricated a homogeneous polymer double-network (DN) hydrogel by pre-seeding calcium carbonate (CaCO3) microparticles into sodium alginate (SA)/polyacrylamide (PAM) hydrogels and triggering the release of Ca2+ in acidic solution. The acid-triggered cross-linking generates sacrificial ionic bonds, resulting in a hydrogel with high tensile strength, stretchability, fracture toughness, strain sensitivity, and durability. The hydrogel can be used as a strain sensor and monitor pain signals induced by wounds in a diabetic rat model.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Songjiu Han et al.
Summary: This study proposes a simple integrated strategy to prepare an anisotropic hierarchical hydrogel architecture for artificial ligaments. The hydrogels exhibit high water content, strength, fatigue resistance, and stress sensitivity, making them suitable for biomedical applications.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Guoying Gu et al.
Summary: The development and implementation of neuroprosthetic hands aim to replace the sensorimotor function of upper-limb amputees. Soft robotics technology shows promise in addressing design complexity and integration difficulty, especially in personalized applications. This review explores the evolution of neuroprosthetic hands with soft robotics, discussing anthropomorphic design and bidirectional neural interactions. Future opportunities include revolutionized mechanisms, high-performance sensors, and compliant neural-interaction interfaces.
Article
Chemistry, Multidisciplinary
He Shan et al.
Summary: This paper introduces a sorption-based atmospheric water harvesting (AWH) method and proposes a polyelectrolyte hydrogel sorbent with a hybrid-desorption multicyclic-operation strategy, achieving all-day AWH and increasing daily water production significantly.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mengyuan Zhang et al.
Summary: The Hoffmeister effect of polyelectrolytes is found to significantly improve the mechanical performance of hydrogels, especially the double-network hydrogel. The mechanical properties of the hydrogels can be flexibly tuned by adjusting polyelectrolyte concentration, ionization degree, relative hydrophobicity, and polyelectrolyte type. Introducing urea bonds into the polyelectrolyte further enhances the mechanical properties and anti-swelling capability of the hydrogels. In a biomedical application, the advanced hydrogel effectively inhibits hernia formation and promotes tissue regeneration in an abdominal wall defect model.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhe Cheng et al.
Summary: Researchers have developed a soft, self-healable, all-environment stable ionic conductor material that enables a soft robot to operate in both underwater and on-land environments. By tuning the molecular structures of the material, the robot exhibits excellent underwater actuating performance and a 50-time increase in device lifetime compared to unmodified devices. The robot is able to traverse hydro-terrestrial regions and has imperceptibility to light, sound, and heat.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiangyu Liang et al.
Summary: By harnessing multi-length-scale structural hierarchy and using bidirectional freeze-casting and compression-annealing, a hierarchically structured hydrogel material has been developed. The engineered 2D lamellar structures, well-defined nanocrystalline domains, and robust interfacial interaction contribute to the hydrogel's high impact resistance, high water content, and superior softness, resulting in record-high ballistic energy absorption capability.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Mingze Sun et al.
Summary: We describe multifunctional tendon-mimetic hydrogels composed of anisotropic assembly of aramid nano-fiber composites. These hydrogels mimic the structural interplay between collagen fibers and proteoglycans in tendons, and display high strength, modulus, and fracture toughness matching those of natural tendons. The surfaces of these hydrogels can be functionalized with bioactive molecules and integrated with soft bioelectronic components for sensing physiological parameters. The exceptional mechanics and functionality of these tendon mimetics suggest their potential applications in tissue engineering, prosthetics, human-machine interactions, and other technologies.
Article
Chemistry, Multidisciplinary
Jiayu Wu et al.
Summary: This study develops a printable and tough supramolecular polymer hydrogel through hydrogen bond engineering, utilizing strain-induced microphase separation behavior and dynamic shape memory. Hydrogel stents manufactured by 3D printing show good biocompatibility and drug elution, indicating potential biomedical applications for these high-toughness hydrogels.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yongchuan Wu et al.
Summary: A new solvent-exchange-assisted wet-annealing strategy has been proposed to prepare high performance poly(vinyl alcohol) hydrogels with high strength, large stretchability, great fracture energy, and good fatigue threshold. The hydrogels exhibit large tensile strengths up to 11.19 +/- 0.27 MPa and extremely high fracture strains of 1879 +/- 10%. The fracture energy and fatigue threshold are also significantly high. These hydrogels compare favorably to other tough hydrogels, organogels, natural tendons, and synthetic rubbers.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Liju Xu et al.
Summary: An adaptable crystal-domain cross-linking design is used to overcome the trade-off between stiffness and toughness in hydrogels, allowing for the simultaneous improvement of both properties. This finding provides a practical and universal method for designing stiff and tough hydrogels and has a profound impact on various applications requiring hydrogels with combined mechanical properties.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hongqi Zou et al.
Summary: Solar-driven water evaporation technology has great potential for mitigating global water scarcity due to its high energy conversion efficiency. In this study, a highly hydratable hydrogel network was developed to enhance desalination performance and achieve self-cleaning capability. Further investigation revealed that the evaporation behavior of the network in brine is influenced by its hydrability.
ADVANCED MATERIALS
(2023)
Article
Engineering, Biomedical
Yueying Yang et al.
Summary: We have developed a minimally invasive bioprinting system to fabricate electroactive hydrogel scaffolds in partial liver resection of live rats. In situ tissue regeneration is achieved by promoting cell proliferation, migration, and differentiation, as well as maintaining liver function.
BIOACTIVE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Chunhui Luo et al.
Summary: Fabricating artificial materials that mimic the structures and properties of tendons is of great significance. Researchers have developed a poly(vinyl alcohol) hydrogel with hierarchically anisotropic structures, exhibiting excellent mechanical properties, swelling resistance, and cytocompatibility. This hydrogel holds potential for various biotechnological and biomedical applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Xiaohui Meng et al.
Summary: This research successfully achieved a hysteresis-free material by using a low-crosslink-density polyacrylamide hydrogel with hyperbranched silica nanoparticles. These resilient hydrogels exhibit fatigue-free characteristics under large deformations and can accurately detect dynamic deformations.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Minhong Tan et al.
Summary: Precision medicine plays a crucial role in conducting real-time examination and administering on-demand medication. Existing therapeutic systems often implement these processes separately, leading to treatment interruption and limited recovery in patients. Intelligent wearable medical devices (IWMDs) have gained increasing attention for their non-invasive and customizable nature, and have significantly contributed to the research on biosensing and drug-delivery integrated systems. This review examines the latest progress in IWMDs research, including their mechanisms of integrating biosensing and on-demand drug delivery, and discusses the current challenges and future development directions.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Zilong Han et al.
Summary: Hydrogen bond engineering is utilized to enhance the mechanical properties and extreme condition tolerance of hydrogels. The trehalose network-repairing strategy using covalent-like hydrogen bonding interactions greatly improves the strength, stretchability, and toughness of modified hydrogels under a wide temperature range. This methodology provides a versatile approach to synthesize highly stretchable and tough hydrogels for various applications.
Article
Chemistry, Multidisciplinary
Kai Gong et al.
Summary: In this study, a supramolecular plastic-like hydrogel (SPH) platform is introduced to fabricate sustainable plastics with ultrahigh stiffness and strength, as well as water-assisted arbitrarily shapeable capability. The resulting transparent plastics, constructed from SPHs of cellulose ether/polycarboxylic acid complexes, exhibit mechanical robustness superior or comparable to most common plastics. The shape of the plastics can be reversibly engineered by air drying of the SPHs with diverse 2D/3D shapes and structures.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Wenqian He et al.
Summary: Inspired by the structure and spinning process of spider silk, the authors successfully prepared spider-silk-like nanogel fibers with excellent strength and toughness. The fiber's spinning capacity is dependent on the nanogel size, as predicted by theoretical modeling.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Bo Fang et al.
Summary: This study introduced a good solvent exchange strategy to wet spin ultrafine polyaniline fibers with diameters below 5 µm, high energy and charge storage capacities, and favorable mechanical performance. These ultrafine polyaniline fibers are qualified to build tactile organic electrochemical transistors.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Yinding Chi et al.
Summary: Inspired by the motion of swimming animals, researchers have developed a soft flapping-wing swimmer that demonstrates comparable high performance to biological counterparts. The lightweight swimmer achieves a record-high speed, high power efficiency, low energy consumption, and high maneuverability.
Article
Chemistry, Physical
Tao Shui et al.
Summary: This study develops an innovative strategy to improve the long-term stability of hydrogels by incorporating mussel foot protein-inspired dynamic amine-catechol interactions. The resulting hydrogel exhibits superior isotropic tensile strength, ultratoughness, and resilience, surpassing most reported biocompatible hydrogels. Additionally, the hydrogel demonstrates diverse functionalities such as underwater adhesion and conductivity.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Chenguang Jiang et al.
Summary: This study developed a polyacrylamide (PAM)/poly(vinyl alcohol) (PVA)/MXene composite organohydrogel with dual cross-links, which exhibited excellent strain-resistance effect, temperature coefficient of resistance, and environmental tolerance. The optimized sample can be used as a strain sensor, pressure sensor, and thermal sensor.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Xu Fang et al.
Summary: This study fabricates poly(vinyl alcohol) (PVA)-based supramolecular plastics capable of degrading in soil and recycling under mild conditions. The plastics exhibit satisfactory mechanical strength in watery environment due to the hydrogen-bond-cross-linked hydrophobic domains, and can rapidly degrade into harmless hydrogel pieces in seawater.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Lei Liu et al.
Summary: The concept of dynamic hydrogen-bonded nanoconfinement is proposed for the first time, leading to the successful design of highly stretchable and supratough biocompatible PVA. This work opens up new opportunities for creating mechanically robust, healable, and biocompatible polymeric materials.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shuwang Wu et al.
Summary: This study presents a strategy to broadly and reversibly alter the mechanical properties of hydrogels by tuning the aggregation states of polymer chains based on the Hofmeister effect. An ultra-tough PVA hydrogel with exceptional mechanical properties is fabricated, showcasing continuous and reversible modulation of various mechanical properties over a large window. This strategy enables high mechanical performance and broad dynamic tunability, serving as a universal platform for applications ranging from biomedicine to wearable electronics.
ADVANCED MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Ting Shu et al.
Summary: The study successfully produced birefringent silk fibroin hydrogels with hierarchical structures and mechanical properties analogous to biological tissues using a binary solvent-exchange-induced self-assembly method. These hydrogels are transparent, birefringent, and can serve as ideal tissue surrogates for understanding the mechanical response of biological tissues.
Article
Multidisciplinary Sciences
Mutian Hua et al.
Summary: A strategy combining freeze-casting and salting-out treatments produces poly(vinyl alcohol) hydrogels with a multi-length-scale hierarchical architecture, including micrometre-scale honeycomb-like pore walls and interconnected nanofibril meshes. These hydrogels have properties that compare favorably to other tough hydrogels and even natural tendons.
Article
Multidisciplinary Sciences
Junsoo Kim et al.
Summary: By synthesizing polymers with a large number of entanglements and sparse cross-links, high toughness, strength, and fatigue resistance can be achieved, resulting in hydrogels with low hysteresis, low friction, and high wear resistance after swelling in water.
Article
Chemistry, Multidisciplinary
Yingjie Wang et al.
Summary: The development of a universal stretchable ionic conductor coating on insulating substrates has been proven extremely challenging due to limitations in adhesion, dehydration, processability, and surface pre-treatment. A new ionogel paint has been developed, resulting in ultra-stretchable ionogels with widely tunable mechanical and conductive properties, self-healability, and tissue-like strain adaptability. The ionogel paint shows great potential for applications in emerging soft and stretchable electronics, such as highly sensitive and durable large-strain sensors.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Tang Zhu et al.
Summary: This study introduces a new strategy for surface functionalization of hydrogels, which involves a double-hydrophobic coating to enhance water retention capacity, improve stability, and prolong the lifetime of hydrogels in air.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Multidisciplinary Sciences
Binbin Ying et al.
Summary: Skin-like electronics using hydrogels as soft biomaterials are being developed rapidly, facing challenges such as limited functionality, low ambient stability, poor surface adhesion, and relatively high power consumption. Current research is focused on increasing toughness, conductivity, and developing advanced features like anti-dehydration, anti-freezing, and improved adhesion for hydrogel devices in applications such as wearable electronics, soft robotics, and energy harvesting.
Article
Chemistry, Multidisciplinary
Xiongxin Luo et al.
Summary: The MXene/polyvinyl alcohol (PVA) hydrogel TENG (MH-TENG) showcases simple fabrication, high output performance, and versatile applications. MXene nanosheets doping enhances the crosslinking of the PVA hydrogel, improving its stretchability.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiangyu Liang et al.
Summary: Nature utilizes inherent structures across multiple length-scales to build biological materials with exceptional mechanical performances, surpassing artificial materials. A simple and universal strategy has been developed to significantly increase the fatigue thresholds of conventional hydrogels, making them durable alternatives to most synthetic soft materials. These fatigue-resistant hydrogels show high-performance and cost-effective features, suitable for various applications such as robotics and artificial muscles.
ADVANCED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Chang Liu et al.
Summary: The study introduces a damageless reinforcement strategy for hydrogels using strain-induced crystallization, which significantly enhances the toughness and enables almost 100% rapid recovery of extension energy.
Review
Chemistry, Multidisciplinary
Yukun Jian et al.
Summary: Hydrogels, as outstanding materials, have been extensively studied for various fields of application, but their properties are compromised at sub-zero temperatures. Lowering the liquid-solid phase transition temperature is crucial for expanding their applications. Research on anti-freezing hydrogels mainly focuses on additives, polymer network modification, and future developments hold promising research directions.
MATERIALS HORIZONS
(2021)
Article
Nanoscience & Nanotechnology
Wenwen Niu et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Jingjie Hu et al.
ADVANCED MATERIALS
(2020)
Review
Biochemistry & Molecular Biology
Jing Liao et al.
Article
Chemistry, Multidisciplinary
Liju Xu et al.
ADVANCED MATERIALS
(2020)
Article
Chemistry, Physical
Yang Wang et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Multidisciplinary Sciences
Shaoting Lin et al.
Article
Chemistry, Multidisciplinary
Xiao Zhang et al.
ADVANCED FUNCTIONAL MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Jin Wu et al.
MATERIALS HORIZONS
(2019)
Review
Chemistry, Multidisciplinary
Xiao Fu et al.
Article
Materials Science, Composites
Yu Guan et al.
COMPOSITES SCIENCE AND TECHNOLOGY
(2017)
Article
Chemistry, Multidisciplinary
Yanyu Yang et al.
ADVANCED MATERIALS
(2016)
Article
Materials Science, Multidisciplinary
Leishan Shao et al.
MATERIALS & DESIGN
(2016)
Article
Multidisciplinary Sciences
Zheng Ling et al.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2014)
Article
Multidisciplinary Sciences
Jeong-Yun Sun et al.
