Photo‐Induced Active Ion Transport‐Assisted Efficient Ionic Power Harvesting from Bioinspired Janus Dual‐Field Heterostructures

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(22)

Published: Feb. 5, 2024

Abstract Natural organisms have developed various biological ion channels/transporters to maintain normal life activities adapt changing environments. Significantly, transporters with active transport property show much more controllability on these due a variety of external stimuli, giving guidance construct artificial counterparts for overcoming the issues in simple nanofluidic systems restricted by self‐diffusive transport. Herein, 2D system based Janus membrane (i.e., JM) is constructed, which can achieve light‐driven and do favor ionic power harvesting electrolyte equal concentrations. The JM obtained through sequentially assembled montmorillonite (MMT) decorated photoelectric molecules PMMT) MXene nanosheets. Due formed intramembrane electric field temperature gradient caused efficient charge separation localized thermal excitation under light illumination, photovoltaic‐driven force thermo‐osmotic are generated preferential In addition, unidirectional employed harvest power, showing an output density 2.0 mW m −2 high‐performance energy conversion efficiency 8.3 × 10 −4 %. effects intensity, concentration species performance investigated, university harvesting.

Language: Английский

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Bio-inspired designs for wet gas sensing systems and beyond

Device, Journal Year: 2024, Volume and Issue: 2(3), P. 100293 - 100293

Published: March 1, 2024

Language: Английский

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Retina‐Inspired Nanofluidic Membranes for Underwater Visual Imaging Based on Active Ion Transport

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)

Published: March 30, 2024

Abstract Through evolution, biological organisms have developed ways to sense light using ion channels, which holds several advantages, such as energy efficiency and water resistance, over humanmade optoelectronic devices. Herein, a retina‐inspired nanofluidic system is presented with Janus heterogeneous membrane (J‐HM), can achieve underwater visual imaging through light‐driven active transport. The J‐HMs are obtained sequentially assembled WS 2 , kind of metal–organic framework nanosheets via the reaction between 2,3,6,7,10,11‐hexahydroxytriphenylene hydrate (HHTP) Cu 2+ (Cu‐HHTP). Due formed intramembrane electric field caused by efficient charge separation under illumination, photovoltaic driving force generated for transport from Cu‐HHTP . Furthermore, unidirectionally be enhanced self‐diffusion concentration gradient. J‐HM single‐pixel design shows nearly linear response intensity has enough resolution basic object recognition well long‐term memory after data processing defined pixelated matrix, pave an avenue designing more intelligent sensing systems.

Language: Английский

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Bionic Recognition Technologies Inspired by Biological Mechanosensory Systems

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

Published: Jan. 21, 2025

Abstract Mechanical information is a medium for perceptual interaction and health monitoring of organisms or intelligent mechanical equipment, including force, vibration, sound, flow. Researchers are increasingly deploying recognition technologies (MIRT) that integrate acquisition, pre‐processing, processing functions expected to enable advanced applications. However, this also poses significant challenges acquisition performance efficiency. The novel exciting mechanosensory systems in nature have inspired us develop superior bionic (MIBRT) based on materials, structures, devices address these challenges. Herein, first strategies pre‐processing presented their importance high‐performance highlighted. Subsequently, design considerations sensors by mechanoreceptors described. Then, the concepts neuromorphic summarized order replicate biological nervous system. Additionally, ability MIBRT investigated recognize basic information. Furthermore, further potential applications robots, healthcare, virtual reality explored with view solve range complex tasks. Finally, future opportunities identified from multiple perspectives.

Language: Английский

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MXene‐Integrated Perylene Anode with Ultra‐Stable and Fast Ammonium‐Ion Storage for Aqueous Micro Batteries

Advanced Science, Journal Year: 2023, Volume and Issue: 11(1)

Published: Nov. 14, 2023

The aqueous micro batteries (AMBs) are expected to be one of the most promising energy storage devices for its safe operation and cost-effectiveness. However, performance AMBs is not satisfactory, which attributed strong interaction between metal ions electrode materials. Here, first developed with NH

Language: Английский

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Nylon Fabric/GO Based Self‐Powered Humidity Sensor Based on the Galvanic Cell Principle with High Air Permeability and Rapid‐Response

Small, Journal Year: 2023, Volume and Issue: 20(10)

Published: Oct. 29, 2023

Abstract Flexible humidity sensors have received more and attention in people's lives, the problems of gas permeability power supply issues device long been areas need improvement. In this work, inspired by high air daily wear clothing galvanic batteries, a self‐powered sensor with fast response is designed. A nylon fabric/GO net (as sensitive layer solid electrolyte) obtained spraying technique. This structure enables to response/recovery (0.78 s/0.93 s, calculated at 90% final value), ultra‐high (0.83 V) excellent stability (over 150 cycles) 35 °C. Such are useful for health monitoring, such as non‐contact monitoring human respiratory rate before after exercise, level palms, arms, fingers. research provides an idea developing flexible wearable that both breathable can also be mass‐produced similar clothing.

Language: Английский

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Enhancing Osmotic Energy Harvesting Through Supramolecular Design of Oxygen‐Functionalized MXene with Biomimetic Ion Channels

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: May 28, 2024

Abstract Reverse electrodialysis (RED) technology, relying on ion‐selective permeability membranes (ISPM), offers a direct means of harnessing osmotic energy from the salinity difference between seawater and freshwater. Critical technical challenges include limitations in ISPM's immobile charge carriers, transmembrane ionic internal resistance, durability water. Drawing inspiration subunit structure epithelial sodium channel (ENaC), an ISPM assembled using supramolecular engineering strategy is introduced. This innovative approach enables synergistic action multiple molecular building blocks to mimic distribution ENaC structures, strategically planning placement carriers nanofluidic channels. The design incorporates nano‐confined oxygen‐rich functionalized MXene (O‐MXene) high‐strength polymer backbone aramid fibers construct 3D channels with high surface density. Enhanced by bonding network carboxymethylcellulose, achieved exceptional output power density 21.7 W m −2 46.0% conversion efficiency RED half‐cell system natural river water, surpassing current technologies. research not only advances technology but also provides biomimetic customization concepts for across various applications, including flow batteries, fuel cells, related fields.

Language: Английский

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Novel Iontronic Pressure Sensor Coupling High Sensitivity and Wide‐Range for Stiffness Identification and Long‐Distance Precise Motion Control

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

Published: Aug. 21, 2024

Abstract High‐performance flexible pressure sensors have garnered widespread applications across numerous vital fields, encompassing robotics, artificial intelligence, and brain‐computer interfaces. However, the small compressibility range of materials easy saturation characteristics microstructures greatly limit their practical applications. Therefore, achieving high sensitivity over an extensive remains a challenge. Here, inspired by skin, raised structure with graded features is designed as sensitive layer. A sensor performance manufactured combining iontronic The results indicate that this can stably maintain 161.26 kPa −1 even at 320 kPa. Moreover, also has fast response time recovery 26 85 ms, respectively. As demonstration, these are applied to stiffness recognition, human motion monitoring, control long‐distance four‐wheel vehicles. This work will offer valuable insights serve useful reference for broadened sensing in sensors.

Language: Английский

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Readily prepared and processed multifunctional MXene nanocomposite hydrogels for smart electronics

SmartMat, Journal Year: 2023, Volume and Issue: 5(2)

Published: June 28, 2023

Abstract Booming sophisticated robotics and prosthetics put forward high requirements on soft conductive materials that can bridge electronics biology, those should imitate the mechanical properties of biological tissues build information transmission networks. Until now, it remains a great challenge to handle trade‐off among ease preparation, conductivity, processability, adaptability, external stimuli responsiveness. Herein, kind readily prepared processed multifunctional MXene nanocomposite hydrogel is reported, which via fast gelation cationic monomer initiated by delaminated sheets. The time be adjusted (several seconds minutes) based loadings. By adjusting ratio, resulting nanocomposites are ultrastretchable (>5000%), three‐dimensional (3D) printable, show outstanding electrical self‐healing. As expected, integration systems onto various substrates (e.g., gloves masks) further demonstrated 3D printing could achieve diverse sensory capabilities toward strain, pressure, temperature, showing prospects as smart flexible electronics.

Language: Английский

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Transport channel engineering between MXene interlayers for Zn‐ion hybrid microsupercapacitor with enhanced energy output and cycle stability

Carbon Neutralization, Journal Year: 2023, Volume and Issue: 2(6), P. 699 - 708

Published: Oct. 5, 2023

Abstract Two‐dimensional (2D) transition metal carbonitrides/nitrides (MXene) materials have proven to be promising alternatives as novel capacitor‐type electrodes for aqueous Zn‐ion hybrid microsupercapacitors (ZHMSCs). However, during self‐assembly processes, serious restacking between 2D MXene nanosheets induced by strong van der Waals forces makes ion transport channels narrow within the compact film electrodes, which would result in poor energy output of ZHMSCs. Herein, interlayer channel engineering is designed intercalating bacterial cellulose (BC) interlayers develop MXene/BC with fast contrast pure electrodes. Benefiting from anion intercalation/deintercalation on cathode and reversible Zn stripping/plating foil anode, fabricated ZHMSCs exhibit wide working potential windows (1.36 V), high areal capacitance (404 mF cm −2 ), landmark density (94 µWh at 1 mA ). The developed are much higher than those based (239 /57 Besides, can perform more 10,000 cycles, showing outstanding capacity retention. In general, our work provides a strategy break through performance bottlenecks afflicting MXene‐based

Language: Английский

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