Hydrogen‐Bonded Organic Framework Films Integrated with Wavy Structured Design for Wearable Bioelectronics

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 26, 2025

Abstract The integration of hydrogen‐bonded organic frameworks (HOFs) with flexible electronic technologies offers a promising strategy for monitoring detailed health information, owing to their inherent porosity, excellent biocompatibility, and tunable catalytic capabilities. However, application in wearable real‐time remains largely unexplored, primarily due the mechanical mismatch between traditionally fragile HOFs particles softness human skin. Herein, this study demonstrates an epidermal biosensor that maintains reliable sensing capability even under extreme deformation complex environmental conditions by integrating films wavy bioelectrodes. This ultrasensitive detection capabilities, limit 49.64 nM, accurately measures nutritional content sweat while conforming curved skin surfaces. sensor's performance is comparable those obtained using high‐performance liquid chromatography (HPLC). More strikingly, scratched can be regenerated through simple solvent rinsing process, enabling reuse fabrication new biosensors offering significant advantage over conventional materials. work has potential inspire development more devices, leveraging structural adaptability diversity personalized healthcare applications monitoring.

Language: Английский

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Mechanical Compatibility in Stitch Configuration and Sensor Adhesion for High‐Fidelity Pulse Wave Monitoring

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Wearable electronics can achieve high-fidelity monitoring of pulse waveforms on the body surface enabling early diagnosis cardiovascular diseases (CVDs). Textile-based wearable devices offer advantages in terms high permeability and comfort. However, knitted strain sensors struggle to capture small-range deformation signals due stress dissipation during friction slip yarns within textiles. They are optimized for mechanical adaptability adhesive capability. In this work, stitch configurations structure adjusted optimize energy ratio waveform fitting performance. These electric-mechanical results enabled selection most suitable clinical diagnosis. On other hand, sensor's adhesion is with respect electrical-force-strain coupling transfer efficiency at interface between skin sensor. The balance storage modulus loss via crosslinking degree polyacrylamide (PAAm) hydrogel network. As a result, sensor enables stable collection from radial dorsalis pedis arteries. human patient evaluations, knitting-based distinguish patients different potential CVD risks through extracted characteristic indicators.

Language: Английский

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Reconfigurable Neuromorphic Computing Using Methyl-Engineered One-Dimensional Covalent Organic Framework Memristors

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

Published: March 25, 2025

The rapid evolution of neuromorphic devices seeks to bridge biological neural networks and artificial systems, enabling energy-efficient scalable computing for next-generation intelligence. Herein, we introduce methyl-engineered one-dimensional covalent organic framework (1D COF)-based memristors as a transformative platform reconfigurable computing. incorporation methyl groups enhances localized polarization effects within the COF framework, effectively mitigating random Ag+ migration/diffusion stabilizing conductive filament morphology. This strategic modification yields with exceptional multilevel storage capabilities, exhibiting superior stability, linearity, reproducibility. Moreover, highly ordered architecture customizable chemical environment methyl-functionalized 1D allows precise control over resistive switching behaviors, facilitating emulation synaptic functions development network architectures. Demonstrating performance in tasks such high-accuracy image recognition, these showcase significant promise foundation energy-efficient, systems.

Language: Английский

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The Critical Role of Materials and Device Geometry on Performance of RRAM and Memristor: Review

Materials Today Physics, Journal Year: 2025, Volume and Issue: unknown, P. 101715 - 101715

Published: April 1, 2025

Language: Английский

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Intrinsically Stretchable Resistive Memory Devices Utilizing Wavy Structured Strategy Integrated with Metal‐Organic Framework Glasses

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Abstract Flexible resistive random‐access memory (RRAM) holds significant promise for data storage applications in the realms of smart healthcare and wearable devices. However, most research has focused primarily on development stretchable electrodes, frequently neglecting mechanical compatibility between functional layer electrode. Consequently, advancement intrinsically memristors presents a substantial challenge. Herein, glassy metal‐organic framework (MOF) film with wrinkle structure is integrated pre‐stretched electrode to fabricate memristors. These devices demonstrate an impressive switching ratio up 10 5 , bending radius limit mm, strain 20%, all while maintaining stable characteristics. Furthermore, conductive atomic force microscope (C‐AFM) ion beam (FIB) techniques reveal that effect governed by silver filament mechanism. This work successfully developed memristor, paving way application MOFs as layers flexible electronics. It expected inspire further design high‐performance, electronic technologies.

Language: Английский

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Challenges and Opportunities of Upconversion Nanoparticles for Emerging NIR Optoelectronic Devices

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Abstract Upconversion nanoparticles (UCNPs), incorporating lanthanide (Ln) dopants, can convert low‐energy near‐infrared photons into higher‐energy visible or ultraviolet light through nonlinear energy transfer processes. This distinctive feature has attracted considerable attention in both fundamental research and advanced optoelectronics. Challenges such as low energy‐conversion efficiency nonradiative losses limit the performance of UCNP‐based optoelectronic devices. Recent advancements including optimized core–shell structures, tailed Ln‐doping concentration, surface modifications show significant promise for improving stability. In addition, combining UCNPs with functional materials broaden their applications improve device performance, paving way innovation next‐generation paper first categorizes elaborates on various upconversion mechanisms UCNPs, focusing strategies to boost prolong luminescence. Subsequently, an in‐depth discussion that enhance expand functionality is provided. Furthermore, a wide range devices explored, multiple emerging neuromorphic computing are highlighted. Finally, existing challenges potential solutions involved developing practical considered, well outlook future technologies

Language: Английский

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Switching from Molecules to Functional Materials: Breakthroughs in Photochromism With MOFs

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 7, 2024

Abstract Photochromic materials with properties that can be dynamically tailored as a function of external stimuli are rapidly expanding field driven by applications in areas ranging from molecular computing, nanotechnology, or photopharmacology to programable heterogeneous catalysis. Challenges arise, however, when translating the rapid, solution‐like response stimuli‐responsive moieties solid‐state due intermolecular interactions imposed through close packing bulk solids. As result, integration photochromic compounds into synthetically porous matrices, such metal‐organic frameworks (MOFs), has come forefront an emerging strategy for material development. This review highlights how core principles reticular chemistry (on example MOFs) play critical role performance, surpassing limitations previously observed solution solid state. The symbiotic relationship between photoresponsive and focus on synthesis creates avenues toward tailorable photoisomerization kinetics, directional energy charge transfer, switchable gas sorption, synergistic chromophore communication is discussed. not only focuses recent cutting‐edge advancements development, but also novel, vital‐to‐pursue pathways multifaceted functional realms energy, technology, biomedicine.

Language: Английский

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A Violet‐Light‐Responsive ReRAM Based on Zn₂SnO₄/Ga₂O₃ Heterojunction as an Artificial Synapse for Visual Sensory and In‐Memory Computing

Advanced Electronic Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 9, 2024

Abstract Due to the imitation of neural functionalities human brain via optical modulation resistance states, photoelectric resistive random access memory (ReRAM) devices attract extensive attraction for synaptic electronics and in‐memory computing applications. In this work, a ReRAM (PSR) structure ITO/Zn 2 SnO 4 /Ga O 3 /ITO/glass with simple fabrication process is reported imitate plasticity. Electrically induced long‐term potentiation/depression (LTP/D) behavior indicates fulfillment fundamental requirement artificial neuron devices. Classification three‐channeled images corrupted different levels (0.15–0.9) Gaussian noise achieved by simulating convolutional network (CNN). The violet light (405 nm) illumination generates excitatory post current (EPSC), which influenced persistent photoconductivity (PPC) effect after discontinuing excitation. As an device, PSR able some basic functions such as multi‐levels linearly increasing trend, learning‐forgetting‐relearning behavior. same device also shows emulation visual persistency optic nerve skin‐damage warning. This executes high‐pass filtering function demonstrates its potential in image‐sharpening process. These findings provide avenue develop oxide semiconductor‐based multifunctional advanced systems.

Language: Английский

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