Highly Conductive and Stretchable Hydrogel Nanocomposite Using Whiskered Gold Nanosheets for Soft Bioelectronics

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 11, 2024

Abstract The low electrical conductivity of conductive hydrogels limits their applications as soft conductors in bioelectronics. This originates from the high water content hydrogels, which impedes facile carrier transport between fillers. study presents a highly and stretchable hydrogel nanocomposite comprising whiskered gold nanosheets. A dry network nanosheets is fabricated then incorporated into wet matrices. preserve tight interconnection despite content, providing high‐quality percolation even under stretched states. Regardless type matrix, gold‐hydrogel nanocomposites exhibit ≈520 S cm −1 stretchability ≈300% without requiring dehydration process. reaches maximum ≈3304 when density controlled. gold‐adhesive nanocomposite, can achieve conformal adhesion to moving organ surfaces, for bioelectronics demonstrations. adhesive electrode outperforms elastomer‐based electrodes vivo epicardial electrogram recording, pacing, sciatic nerve stimulation.

Язык: Английский

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Toward next-generation wearable sensors based on MXene hydrogels

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(38), С. 25622 - 25642

Опубликована: Янв. 1, 2024

Here in this review, we systematically analyze the design principles of MXene hydrogels for next-generation wearable sensors. Emphasis is placed on multiple sensors based electrical/mechanical enhancement hydrogel network.

Язык: Английский

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Wet adhesives for hard tissues

Acta Biomaterialia, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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In-situ synthesis of biomimetic eutectogel sensors exhibiting softness, strain-stiffening, and anti-fatigue properties via a hierarchical bonding strategy

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 164085 - 164085

Опубликована: Май 1, 2025

Язык: Английский

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Liquid Metal: A New Approach to Diagnosis and Treatment of Cardiovascular Diseases

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 27, 2025

Abstract Cardiovascular diseases (CVDs) remains a leading cause of high mortality and imposes significant health burden globally. The biocompatibility between materials the cardiovascular system, encompassing biological safety, modulus matching, anti‐fatigue performance in dynamic physiological environments, has been critical challenge diagnosis treatment CVDs. emergence liquid metal (LM) offers promising opportunities to develop diagnostic therapeutic methods that exhibit excellent with system. In this perspective, progress LM applications contrast agents, nanomedicine, implantable wearable bioelectronic devices, bionic is evaluated, providing comprehensive in‐depth discussion role advantages CVDs management. Finally, current challenges future prospects field are outlined.

Язык: Английский

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Molecularly Interlocked Interfaces Enable Record‐Efficiency Stretchable Organic Photovoltaics

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Июнь 1, 2025

Abstract The development of stretchable organic solar cells (s‐OSCs) demands concurrent breakthroughs in mechanical compliance and electronic properties, the challenge is rooted intrinsic mismatch between semiconductors metal electrodes. Here, this study proposes dual‐phase interface engineering strategies to reconcile these conflicting requirements through molecularly interlocked conductive elastomers. Dynamic stress dissipation dynamic bond plasticity achieved by embedding a 3D interpenetrating conducting elastomer network within electron transport layer (ETL). strategy creates gradient modulus interfaces Ag coordination‐enabled nanocomposite bonding, suppressing crack propagation velocities reduces interfacial phenomenon. Eventually, PCE 19.58% on small‐area flexible devices, which one highest PCEs for (f‐OSCs) date. Notably, devices retain over 10% under 100% tensile strain, surpassing previous photovoltaic devices. To further validate potential large‐area module applications, 25 cm 2 ‐based modules are prepared with 16.74% 14.48%, respectively. work redefines material design rules deformable electronics establishing generic mechanically adaptive framework that synchronizes dynamics across molecular macroscopic scales.

Язык: Английский

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Well-Balanced Reversible Electroadhesion Performance in Ionic Polyvinyl Chloride Gel via Integrating with Electrostatic and Electrochemical Adhesion Mechanisms

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Июнь 2, 2025

Reversible electroadhesion enables controllable adhesion and deadhesion, which is essential for grippers, robotics, wearable devices. Current electrostatic electrochemical strategies are mainly limited by high stimulation voltages, low strength, durability issues, respectively. This study reports an ionic PVC gel (iPVCG) integrating mechanisms to achieve a well-balanced performance. Electrostatic arises from the force between negatively charged enrichment layer positively anode, while results complexation [SCN]- anions in liquid [Cu]2+ cations on copper anode under leakage current. By leveraging rapid response of strength adhesion, iPVCG exhibits Specifically, reaches 41.98 kPa after 6 s electrical increases 189.22 60 s. Notably, 200 adhesion-deadhesion cycles or 105 days aging, decreases no more than 20%. Furthermore, pad with 4 cm2 contact area successfully picks up, transfers, releases metallic objects weighing 52.80 1036.80 g, accommodating various shapes materials. it remains effective even silicone oil.

Язык: Английский

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Modular Reconfigurable Approach Toward Noninvasive Wearable Body Net for Monitoring Sweat and Physiological Signals

ACS Sensors, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 22, 2024

In the realm of wearable technology, strategically placing sensors at various body locations enhances detection diverse physiological indicators crucial for remote medical care. However, current devices often focus on a single part specific physical parameters, which hinders seamless integration across multiple parts and necessitates redesign new capabilities. Here, we propose modular, reconfigurable circuit assembly method that can be adaptable to construct net. By simply reassembling different child modules with base module using flexible printed board connectors, efficiently detect parameters including sweat ion indicators, electrocardiogram signals, electromyography motion data, heart rate, blood oxygen saturation, skin temperature. These data transmitted mobile phone app via Bluetooth Low Energy protocol further evaluation. Comparative evaluations against established commercial substantiate viability our sensor technology. addition, results from network detections volunteers also indicate promising application prospects, demonstrating extensive potential regular health monitoring clinical applications.

Язык: Английский

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Constructing guar hydroxypropyltrimonium chloride continuous segregated network structure for preparation of biobased conductive film

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 283, С. 137907 - 137907

Опубликована: Ноя. 20, 2024

Язык: Английский

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Strong and Tough Self‐Healing Elastomers via BTA‐Mediated Microstructure and Metal‐ligand Coordination

Macromolecular Rapid Communications, Год журнала: 2024, Номер unknown

Опубликована: Дек. 23, 2024

Creating elastomers with high strength, toughness, and rapid self-healing remains a key challenge. These seemingly contradictory properties require innovative design strategies. Herein, novel approach is proposed by simultaneously incorporating unique triple hydrogen bond unit, benzene-1,3,5-tricarboxamide (BTA), imidazole-Zn

Язык: Английский

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