Multifunctional conductive hydrogels for wearable sensors and supercapacitors

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(6), P. 3589 - 3600

Published: Jan. 1, 2024

Conductive hydrogels, which combine the adhesive properties of polydopamine with conductivity and low melting point features deep eutectic solvents, are ideal green materials for bioelectrodes, flexible sensors, supercapacitors.

Language: Английский

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High‐Strength, Antiswelling Directional Layered PVA/MXene Hydrogel for Wearable Devices and Underwater Sensing

Advanced Science, Journal Year: 2024, Volume and Issue: 11(39)

Published: Aug. 20, 2024

Abstract Hydrogel sensors are widely utilized in soft robotics and tissue engineering due to their excellent mechanical properties biocompatibility. However, high‐water environments, traditional hydrogels can experience significant swelling, leading decreased electrical performance, potentially losing shape, sensing capabilities. This study addresses these challenges by leveraging the Hofmeister effect, coupled with directional freezing salting‐out techniques, develop a layered, high‐strength, tough, antiswelling PVA/MXene hydrogel. In particular, process enhances self‐entanglement of PVA, resulting an S‐PM hydrogel tensile strength up 2.87 MPa. Furthermore, retains its structure after 7 d only 6% change resistance. Importantly, performance is improved postswelling, capability rarely achievable hydrogels. Moreover, demonstrates faster response times more stable resistance rates underwater tests, making it crucial for long‐term continuous monitoring challenging aquatic ensuring sustained operation monitoring.

Language: Английский

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Shape-memory and self-healing properties of sustainable cellulosic nanofibers-based hybrid materials for novel applications

Giant, Journal Year: 2024, Volume and Issue: 19, P. 100299 - 100299

Published: June 5, 2024

In the era of smart and sustainable technology driven by naturally occurring materials, various nanocellulose-based materials play a crucial role. Shape memory behaviour self-healing capabilities nanocelluloses are emerging as focal points in numerous research domains. Nanocellulose its derivatives such cellulose nanocrystals (CNC) nanofibers (CNF), currently limelight due to their excellent shape-memory properties, making them suitable for multifunctional devices. this regard, CNF, cutting-edge material, has spurred researchers explore potential developing contemporary personalized health Therefore, timely comprehensive review is essential gain deep insights into effectiveness CNF Herein, we first provide succinct introduction all nanocellulose materials. This also depicts recent advancements breakthroughs large effective synthesis CNF-based hybrid Next, focusing on performance, sheds new light advanced applications Finally, perspectives current challenges opportunities field summarized future an in-depth understanding "CNF-based materials."

Language: Английский

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An Intrinsic Self‐Healable, Anti‐Freezable and Ionically Conductive Hydrogel for Soft Ionotronics Induced by Imidazolyl Cross‐Linker Molecules Anchored with Dynamic Disulfide Bonds

Macromolecular Rapid Communications, Journal Year: 2023, Volume and Issue: 45(6)

Published: Dec. 29, 2023

Hydrogels are ideal materials for flexible electronic devices based on their smooth ion channels and considerable mechanical flexibility. A substantial volume of aqueous solution is required to enable the flow ions, resulting in agony low-temperature freezing; besides, long-term exposure bending/tensile tress triggers fatigue issues. Therefore, it a great challenge prepare hydrogels with both freeze-resistance durability. Herein, polyacrylic acid-based hydrogel hydrophobic interaction dynamic reversible covalent bonding cross-linking networks preparing (DC-hydrogel) by polymerizing bi-functional imidazole-type ionic liquid monomer integrated disulfide alkene bonds (DS/DB-IL) an octadecyl methacrylate, achieving self-healing. The DS/DB-IL anchored into polymer backbone has high affinity water, reducing freezing point while free ions provides superior conductivity DC-hydrogel. acid abundant carboxyl gives good self-adhesiveness different substrates. Ionotronics resistance-type sensors stable output performance fabricated explored its application joint motion health information. Moreover, hydrogel-based sensing arrays resolution accuracy identify 2D distribution stress. have promise various ionotronics many fields.

Language: Английский

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Hydrophobic association-improved multi-functional hydrogels with liquid metal droplets stabilized by xanthan gum and PEDOT:PSS for strain sensors

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 271, P. 132494 - 132494

Published: May 23, 2024

Language: Английский

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From Short Circuit to Completed Circuit: Conductive Hydrogel Facilitating Oral Wound Healing

Advanced Healthcare Materials, Journal Year: 2024, Volume and Issue: 13(15)

Published: Feb. 2, 2024

Abstract The primary challenges posed by oral mucosal diseases are their high incidence and the difficulty in managing symptoms. Inspired ability of bioelectricity to activate cells, accelerate metabolism, enhance immunity, a conductive polyacrylamide/sodium alginate crosslinked hydrogel composite containing reduced graphene oxide (PAA‐SA@rGO) is developed. This possesses antibacterial, anti‐inflammatory, antioxidant properties, serving as bridge turn “short circuit” injured site into “completed circuit,” thereby prompting fibroblasts proximity wound secrete growth factors expedite tissue regeneration. Simultaneously, PAA‐SA@rGO effectively seals wounds form barrier, exhibits antibacterial anti‐inflammatory prevents foreign bacterial invasion. As electric field rebuilt repaired hydrogel, 5 × mm 2 full‐thickness buccal mucosa rats can be expeditiously mended within mere 7 days. theoretical calculations indicate that aggregate express SOX2, PITX1, PITX2 at site, which has promoting effect on rapid healing. Importantly, this fast curative only needs applied for first three days, significantly improves patient satisfaction during treatment.

Language: Английский

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Printing paper-derived ultralight and highly sensitive E-skin for health monitoring and information encryption

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 976, P. 173411 - 173411

Published: Jan. 2, 2024

Language: Английский

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Unzipped carbon nanotubes assisted 3D printable functionalized chitosan hydrogels for strain sensing applications

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 265, P. 131025 - 131025

Published: March 20, 2024

Language: Английский

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Progress of Research on Conductive Hydrogels in Flexible Wearable Sensors

Gels, Journal Year: 2024, Volume and Issue: 10(2), P. 144 - 144

Published: Feb. 14, 2024

Conductive hydrogels, characterized by their excellent conductivity and flexibility, have attracted widespread attention research in the field of flexible wearable sensors. This paper reviews application progress, related challenges, future prospects conductive hydrogels Initially, basic properties classifications are introduced. Subsequently, this discusses detail specific applications different sensor applications, such as motion detection, medical diagnostics, electronic skin, human–computer interactions. Finally, challenges summarized. Overall, exceptional performance multifunctionality make them one most important materials for technologies. However, further innovation needed to overcome faced realize wider

Language: Английский

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Wearable hydrogel-based health monitoring systems: A new paradigm for health monitoring?

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153382 - 153382

Published: June 21, 2024

Language: Английский

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