Implantable Soft Neural Electrodes of Liquid Metals for Deep Brain Stimulation

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 16, 2025

Stimulating large volumes of neural networks using macroelectrodes can modulate disorder-associated brain circuits effectively. However, conventional solid-metal electrodes often cause unwanted damage due to their high mechanical stiffness. In contrast, low-modulus liquid metals provide tissue-like stiffness while maintaining macroscale electrode dimensions. Here, we present implantable soft made from biocompatible for stimulation. These probes be easily fabricated by simply filling polymeric tubes with a metal, offering straightforward method creating stimulation devices. They customized in various lengths and diameters also serve as recording microelectrodes. The tips are enhanced platinum nanoclusters, resulting low impedance effective charge injection preventing metal leakage into tissue. vivo experiments neuropathic pain rat models demonstrate the stability effectiveness these simultaneous recording, demonstrating potential alleviation behavioral control.

Language: Английский

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Recent Progress in Intrinsically Stretchable Sensors Based on Organic Field-Effect Transistors

Sensors, Journal Year: 2025, Volume and Issue: 25(3), P. 925 - 925

Published: Feb. 4, 2025

Organic field-effect transistors (OFETs) are an ideal platform for intrinsically stretchable sensors due to their diverse mechanisms and unique electrical signal amplification characteristics. The remarkable advantages of lie in molecular tunability, lightweight design, mechanical robustness, solution processability, low Young’s modulus, which enable them seamlessly conform three-dimensional curved surfaces while maintaining performance under significant deformations. Intrinsically have been widely applied smart wearables, electronic skin, biological detection, environmental protection. In this review, we summarize the recent progress based on OFETs, including advancements functional layer materials, sensing mechanisms, applications such as gas sensors, strain stress proximity temperature sensors. conclusions future outlook discuss challenges OFET-based

Language: Английский

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Cr(VI)-Responsive Ink with Four-Dimensional Printing of an Ultracompact Hydrogel Optical Fiber Microsensor

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Hydrogel is emerging as a promising material for smart sensors due to its remarkable stimuli-responsiveness and biocompatibility. However, traditional methods like ultraviolet curing or imprinting could not yield ultracompact hydrogel microstructures with sophisticated design controllable morphology, posing challenges in developing highly integrated microfluidic sensors. With the advanced femtosecond laser (Fs) direct writing technology, an intelligent optical microsensor prepared real-time monitoring of trace hexavalent chromium ions [Cr(VI)] water. First, Cr(VI)-responsive ink containing 3-acrylamidopropyl-trimethyammonium chloride (ACTC) developed, boasting printing resolution ∼250 nm. Subsequently, fiber-tip Fabry–Perot cavity (FPC) Cr(VI) printed using multimaterial TPP strategy. The sensor shows size (∼100 μm) high specificity detecting liquid samples. detection limit 1.48 × 10–9 M makes it suitable rapidly Cr(VI). on-chip MEMS provides platform environmental protection analytical science fields.

Language: Английский

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Implantable hydrogels as pioneering materials for next-generation brain–computer interfaces

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Hydrogels are emerging as promising candidates for brain–computer interfaces. This review highlights the current advancements in implantable hydrogel electrodes neural signal recording, neuromodulation, and brain disorder treatment.

Language: Английский

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Functional Hydrogels for Implantable Bioelectronic Devices

Luminescence, Journal Year: 2025, Volume and Issue: 40(3)

Published: March 1, 2025

ABSTRACT In recent years, with the rapid development of flexible electronics, implantable electronic devices have received increasing attention, and they provide new solutions for medical diagnosis treatment. To ensure long‐term stable operation in internal environment, materials conductivity, flexibility, biocompatibility, other properties are high demand. Hydrogels polymers three‐dimensional network structures that not only physical chemical similar to those biological tissues but can be also modulated by introducing functional groups regulate adhesion, self‐healing, functions. Therefore, hydrogel‐based bioelectronic considered a candidate direction future biomedical field. Here, this paper reviews research progress molecular design performance modulation functionalized hydrogels based on four key hydrogels: toughness. The latest use device applications is summarized below. Finally, discussions given challenges opportunities devices.

Language: Английский

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Hydrogel Flexible Photodetector Based on Polarization of Free Water Molecules and Image Sensor Application

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110889 - 110889

Published: March 1, 2025

Language: Английский

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Two-dimensional polyaniline becomes a metal

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

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Insights into Dendrite Regulation by Polymer Hydrogels for Aqueous Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Aqueous batteries, renowned for their high capacity, safety, and low cost, have emerged as promising candidates next-generation, sustainable energy storage. However, large-scale application is hindered by challenges, such dendrite formation side reactions at the anode. Hydrogel electrolytes, which integrate advantages of liquid solid phases, exhibit superior ionic conductivity interfacial compatibility, giving them potential to suppress evolution. This Perspective first briefly introduces fundamentals underlying unique features hydrogels. It then identifies key role water polymer networks in inhibiting formation, highlighting regulation activity, ion transport, electrode kinetics. By elucidating principles hydrogels suppression, this work aims provide valuable insights advance implementation aqueous batteries incorporating

Language: Английский

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Smart hydrogel material with fast photothermal excitation and ionic electron double conductance

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162503 - 162503

Published: April 1, 2025

Language: Английский

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Tailoring of a specific pH-induced self-enhanced photothermal cellulose hydrogel for antibiotic-resistant bacteria-infected wound treatment

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 513, P. 163025 - 163025

Published: April 23, 2025

Language: Английский

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