Academic literature on the topic 'Ultra-Soft Hydrogels'

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Journal articles on the topic "Ultra-Soft Hydrogels"

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Xie, Beixin, Peidong Xu, Liqun Tang, et al. "Dynamic Mechanical Properties of Polyvinyl Alcohol Hydrogels Measured by Double-Striker Electromagnetic Driving SHPB System." International Journal of Applied Mechanics 11, no. 02 (2019): 1950018. http://dx.doi.org/10.1142/s1758825119500182.

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As an ultra-soft material (elastic modulus in magnitude of kPa), polyvinyl alcohol (PVA) hydrogels have the potential to substitute articular cartilage, but the measurement of the dynamic stress–strain relations of ultra-soft materials is still challenging. In this paper, a double-striker electromagnetic driving split-Hopkinson pressure bar (SHPB) system was developed, in which all the bars were made of polycarbonate, and the polycarbonate striker was pushed by a metal striker driven electromagnetically to ensure the precise control of impact velocity. With the new SHPB system, well design of
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Xu, Zhenyu, Yongsen Zhou, Baoping Zhang, Chao Zhang, Jianfeng Wang, and Zuankai Wang. "Recent Progress on Plant-Inspired Soft Robotics with Hydrogel Building Blocks: Fabrication, Actuation and Application." Micromachines 12, no. 6 (2021): 608. http://dx.doi.org/10.3390/mi12060608.

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Millions of years’ evolution has imparted life on earth with excellent environment adaptability. Of particular interest to scientists are some plants capable of macroscopically and reversibly altering their morphological and mechanical properties in response to external stimuli from the surrounding environment. These intriguing natural phenomena and underlying actuation mechanisms have provided important design guidance and principles for man-made soft robotic systems. Constructing bio-inspired soft robotic systems with effective actuation requires the efficient supply of mechanical energy gen
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Strachota, Beata, Adam Strachota, Leana Vratović, et al. "Exceptionally Fast Temperature-Responsive, Mechanically Strong and Extensible Monolithic Non-Porous Hydrogels: Poly(N-isopropylacrylamide) Intercalated with Hydroxypropyl Methylcellulose." Gels 9, no. 12 (2023): 926. http://dx.doi.org/10.3390/gels9120926.

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Exceptionally fast temperature-responsive, mechanically strong, tough and extensible monolithic non-porous hydrogels were synthesized. They are based on divinyl-crosslinked poly(N-isopropyl-acrylamide) (PNIPAm) intercalated by hydroxypropyl methylcellulose (HPMC). HPMC was largely extracted after polymerization, thus yielding a ‘template-modified’ PNIPAm network intercalated with a modest residue of HPMC. High contents of divinyl crosslinker and of HPMC caused a varying degree of micro-phase-separation in some products, but without detriment to mechanical or tensile properties. After extractio
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Juliar, Benjamin A., Jeffrey A. Beamish, Megan E. Busch, David S. Cleveland, Likitha Nimmagadda, and Andrew J. Putnam. "Cell-mediated matrix stiffening accompanies capillary morphogenesis in ultra-soft amorphous hydrogels." Biomaterials 230 (February 2020): 119634. http://dx.doi.org/10.1016/j.biomaterials.2019.119634.

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Zhang, Aoxiang, Huiying Zhou, Yanhui Guo, and Yu Fu. "Marangoni Flow-Driven Self-Assembly of Biomimetic Jellyfish-like Hydrogels for Spatially Controlled Enzyme Catalysis." Surfaces 8, no. 2 (2025): 28. https://doi.org/10.3390/surfaces8020028.

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Enzymatic catalysis has gained significant attention in green chemistry due to its high specificity and efficiency under mild conditions. However, challenges related to enzyme immobilization and spatial control often limit its practical applications. In this work, we report a Marangoni flow-driven strategy to fabricate a biomimetic jellyfish-like hydrogel with tunable tentacle-like structures. The formation process occurs entirely in an aqueous system without organic solvents or post-treatment, enabling the construction of ultra-thin, free-standing hydrogels through spontaneous interfacial sel
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Huang, Shan, Weibin Wang, Chao Yang, et al. "Highly Stretchable Conductive Hydrogel-Based Flexible Triboelectric Nanogenerators for Ultrasensitive Tactile Sensing." Polymers 17, no. 3 (2025): 342. https://doi.org/10.3390/polym17030342.

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Wearable electronic devices have shown great application prospects in the fields of tactile sensing, electronic skin, and soft robots. However, the existing wearable electronic devices face limitations such as power supply challenges, lack of portability, and discomfort, which restrict their applications. The invention of triboelectric nanogenerators (TENGs) with dual functions of energy harvesting and sensing provides an innovative solution to address these issues. This study prepared a highly stretchable conductive hydrogel using doped conducting polymer poly(3,4-ethylenedioxythiophene):poly
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Sanjuan-Alberte, Paola, Jayasheelan Vaithilingam, Jonathan C. Moore, et al. "Development of Conductive Gelatine-Methacrylate Inks for Two-Photon Polymerisation." Polymers 13, no. 7 (2021): 1038. http://dx.doi.org/10.3390/polym13071038.

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Conductive hydrogel-based materials are attracting considerable interest for bioelectronic applications due to their ability to act as more compatible soft interfaces between biological and electrical systems. Despite significant advances that are being achieved in the manufacture of hydrogels, precise control over the topographies and architectures remains challenging. In this work, we present for the first time a strategy to manufacture structures with resolutions in the micro-/nanoscale based on hydrogels with enhanced electrical properties. Gelatine methacrylate (GelMa)-based inks were for
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Gori, M., S. M. Giannitelli, G. Vadalà, et al. "A POLY(SBMA) ZWITTERIONIC HYDROGEL COATING OF POLYIMIDE SURFACES TO REDUCE THE FOREIGN BODY REACTION TO INVASIVE NEURAL INTERFACES." Orthopaedic Proceedings 105-B, SUPP_7 (2023): 20. http://dx.doi.org/10.1302/1358-992x.2023.7.020.

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Intraneural electrodes can be harnessed to control neural prosthetic devices in human amputees. However, in chronic implants we witness a gradual loss of device functionality and electrode isolation due to a nonspecific inflammatory response to the implanted material, called foreign body reaction (FBR). FBR may eventually lead to a fibrous encapsulation of the electrode surface. Poly(ethylene glycol) (PEG) is one of the most common low-fouling materials used to coat and protect electrode surfaces. Yet, PEG can easily undergo encapsulation and oxidative damage in long-term in vivo applications.
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Wu, Meng, Jingsi Chen, Yuhao Ma, et al. "Ultra elastic, stretchable, self-healing conductive hydrogels with tunable optical properties for highly sensitive soft electronic sensors." Journal of Materials Chemistry A 8, no. 46 (2020): 24718–33. http://dx.doi.org/10.1039/d0ta09735g.

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A self-healing hydrogel ionic conductor has been developed by combining dynamic covalent chemistry with nanofiller reinforcement and micelle crosslinking, and used for sensing of diverse human activities.
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Liu, Yunsong, and Xiong Zheng. "Bio-Inspired Double-Layered Hydrogel Robot with Fast Response via Thermo-Responsive Effect." Materials 17, no. 15 (2024): 3679. http://dx.doi.org/10.3390/ma17153679.

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Bio-inspired hydrogel robots have become promising due to their advantage of the interaction safety and comfort between robots and humans, while current hydrogel robots mainly focus on underwater movement due to the hydration–dehydration process of thermo-responsive hydrogels, which greatly limits their practical applications. To expand the motion of the thermo-responsive hydrogel robot to the ground, we constructed a hydrogel robot inspired by a caterpillar, which has an anisotropic double-layered structure by the interfacial diffusion polymerization method. Adding PVA and SA to PNIPAm will c
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Dissertations / Theses on the topic "Ultra-Soft Hydrogels"

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Wei, Yuanyuan. "Fracture of ultra-soft hydrogels probed by puncture and cavitation." Electronic Thesis or Diss., Université Paris sciences et lettres, 2022. http://www.theses.fr/2022UPSLS045.

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Les matériaux ultra-mous présentent des caractéristiques de déformation et de fracture différentes de celles des matériaux mous ordinaires, en raison des effets anticipés de leur tension superficielle et de leur hétérogénéité de structure. Dans ce contexte, nous avons systématiquement étudié les propriétés de fracture d’hydrogels ultra-mous en utilisant des méthodes de ponction et de cavitation. Pour le polyacrylamide, le PDMS et le carraghénane, la résistance à la fracture est dominée par l'élasticité non linéaire au-dessus de l'échelle de longueur élasto-capillaire. En-dessous cette échelle
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Conference papers on the topic "Ultra-Soft Hydrogels"

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Li, Xiangpeng, Jihua Gou, and Olusegun J. Ilegbusi. "Synthesis-Structure-Property Relationship for Ultra-Soft Tissue-Equivalent Alginate Hydrogel." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-70392.

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Abstract Alginate hydrogels have properties that are similar to extra cellular matrix (ECM). Thus, their mechanical behavior approximates soft tissue, which makes them desirable for production of tissue-equivalent soft deformable structures. This study aims to determine the synthesis-structure-property relationship for alginate hydrogel with Young’s modulus in the range of 100∼101 kPa, equivalent to that of human lung tissue. Hydrogels are hydrophilic polymers with 3D network. Homogeneous alginate hydrogels are synthesized by direct mixture of sodium alginate and CaCO3, followed by the additio
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