Machine Learning‐Enabled Tactile Sensor Design for Dynamic Touch Decoding

Advanced Science, Journal Year: 2023, Volume and Issue: 10(32)

Published: Sept. 22, 2023

Abstract Skin‐like flexible sensors play vital roles in healthcare and human–machine interactions. However, general goals focus on pursuing intrinsic static dynamic performance of skin‐like themselves accompanied with diverse trial‐and‐error attempts. Such a forward strategy almost isolates the design from resulting applications. Here, machine learning (ML)‐guided tactile sensor system is reported, enabling high classification accuracy (≈99.58%) perception six touch modalities. Different intuition‐driven design, such ML‐guided optimization realized by introducing support vector machine‐based ML algorithm along specific statistical criteria for fabrication parameters selection to excavate features deeply concealed raw sensing data. This inverse merges into phase hardware, bridging gap between device structures algorithms. Using optimized sensor, high‐quality recognizable signals handwriting applications are obtained. Besides, additional data processing, robot hand assembled able complete real‐time touch‐decoding an 11‐digit braille phone number accuracy.

Language: Английский

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Direct Laser Writing: From Materials Synthesis and Conversion to Electronic Device Processing

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)

Published: March 29, 2024

Direct Laser Writing (DLW) has been increasingly selected as a microfabrication route for efficient, cost-effective, high-resolution material synthesis and conversion. Concurrently, lasers participate in the patterning assembly of functional geometries several fields application, which electronics stand out. In this review, recent advances strategies based on DLW are surveyed outlined, laser growth strategies. First, main parameters influencing transformation mechanisms summarized, aimed at selective, tailored writing conductive semiconducting materials. Additive transformative processing discussed, to open space explore categories materials directly synthesized or transformed microfabrication. These include metallic conductors, metal oxides, transition chalcogenides carbides, laser-induced graphene, their mixtures. By accessing wide range types, DLW-based electronic applications explored, including components, energy harvesting storage, sensing, bioelectronics. The expanded capability multiple fabrication steps different implementation levels, from engineering device processing, indicates future applicability next-generation electronics, where more accessible, green approaches integrate comprehensive tools.

Language: Английский

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Fast-response hydrogen sulfide gas sensor based on electrospinning Co3O4 nanofibers-modified CuO nanoflowers: Experimental and DFT calculation

Sensors and Actuators B Chemical, Journal Year: 2023, Volume and Issue: 396, P. 134579 - 134579

Published: Sept. 7, 2023

Language: Английский

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Laser-induced direct graphene patterning: from formation mechanism to flexible applications

Soft Science, Journal Year: 2023, Volume and Issue: 3(1), P. 4 - 4

Published: Jan. 1, 2023

The past decade has witnessed an emerging and fast-growing field on mechanically soft systems, ranging from materials (e.g. hydrogels) to devices flexible electronics), functional systems robotics). It is envisioned that will continue thrive in the coming decades academia industrial communities. launch of Soft Science provide first dedicated platform for publishing research findings share knowledge among

Language: Английский

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Machine learning‐assisted wearable sensor array for comprehensive ammonia and nitrogen dioxide detection in wide relative humidity range

InfoMat, Journal Year: 2024, Volume and Issue: 6(6)

Published: April 10, 2024

Abstract The fast booming of wearable electronics provides great opportunities for intelligent gas detection with improved healthcare mining workers, and a variety sensors have been simultaneously developed. However, these sensing systems are always limited to single highly susceptible the inference ubiquitous moisture, resulting in less accuracy analysis compositions real conditions. To address challenges, we propose synergistic strategy based on sensor integration machine learning algorithms realize precise NH 3 NO 2 detections under A array graphene polyaniline composite is developed largely enhance sensitivity selectivity mixed Further introduction backpropagation neural network (BP‐NN) partial least squares (PLS) could improve identification concentration prediction settle realizing over 99% theoretical level concentrations within wide relative humidity range, showing promise detection. As proof concept, wireless bracelet, integrated arrays machine‐learning algorithms, real‐time warning hazardous gases mines different image

Language: Английский

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Laser‐Induced Graphene‐Based Sensors in Health Monitoring: Progress, Sensing Mechanisms, and Applications

Small Methods, Journal Year: 2024, Volume and Issue: 8(11)

Published: April 10, 2024

Abstract The rising global population and improved living standards have led to an alarming increase in non‐communicable diseases, notably cardiovascular chronic respiratory posing a severe threat human health. Wearable sensing devices, utilizing micro‐sensing technology for real‐time monitoring, emerged as promising tools disease prevention. Among various platforms, graphene‐based sensors shown exceptional performance the field of micro‐sensing. Laser‐induced graphene (LIG) technology, cost‐effective facile method preparation, has gained particular attention. By converting polymer films directly into patterned materials at ambient temperature pressure, LIG offers convenient environmentally friendly alternative traditional methods, opening up innovative possibilities electronic device fabrication. Integrating LIG‐based health monitoring systems holds potential revolutionize management. To commemorate tenth anniversary discovery LIG, this work provides comprehensive overview LIG's evolution progress sensors. Delving diverse mechanisms sensors, recent research advances domain are explored. Furthermore, opportunities challenges associated with briefly discussed.

Language: Английский

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Synergy of Active Sites and Charge Transfer in Branched WO₃/W₁₈O₄₉ Heterostructures for Enhanced NO₂ Sensing

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(3), P. 1391 - 1400

Published: Feb. 16, 2024

Achieving reliable detection of trace levels NO2 gas is essential for environmental monitoring and protection human health protection. Herein, a thin-film sensor based on branched WO3/W18O49 heterostructures was fabricated. The optimized exhibited outstanding sensing properties with an ultrahigh response value (1038) low limit (10 ppb) at 50 °C. Such excellent performance could be ascribed to the synergistic effect accelerated charge transfer increased active sites, which confirmed by electrochemical impedance spectroscopy temperature-programmed desorption characterization. ability under different air quality conditions. This work provides effective strategy constructing developing sensors performance.

Language: Английский

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Toward Integrated Multifunctional Laser-Induced Graphene-Based Skin-Like Flexible Sensor Systems

ACS Nano, Journal Year: 2024, Volume and Issue: 18(39), P. 26435 - 26476

Published: Sept. 17, 2024

The burgeoning demands for health care and human-machine interfaces call the next generation of multifunctional integrated sensor systems with facile fabrication processes reliable performances. Laser-induced graphene (LIG) highly tunable physical chemical characteristics plays vital roles in developing versatile skin-like flexible or stretchable systems. This Progress Report presents an in-depth overview latest advances LIG-based techniques applications sensors. First, merits LIG technique are highlighted especially as building blocks sensors, followed by description various methods its variants. Then, focus is moved to diverse including electrophysiological Mechanisms advantages these scenarios described detail. Furthermore, representative paradigms presented show capabilities multipurpose applications. signal cross-talk issues discussed possible strategies. technology functionalities coupled other strategies will enable high-performance next-generation skin electronics.

Language: Английский

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Direct Laser Processing and Functionalizing PI/PDMS Composites for an On‐Demand, Programmable, Recyclable Device Platform

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: April 2, 2024

Skin-interfaced high-sensitive biosensing systems to detect electrophysiological and biochemical signals have shown great potential in personal health monitoring disease management. However, the integration of 3D porous nanostructures for improved sensitivity various functional composites signal transduction/processing/transmission often relies on different materials complex fabrication processes, leading weak interfaces prone failure upon fatigue or mechanical deformations. The integrated system also needs additional adhesive strongly conform human skin, which can cause irritation, alignment issues, motion artifacts. This work introduces a skin-attachable, reprogrammable, multifunctional, device patch fabricated by simple low-cost laser scribing an composite with polyimide powders amine-based ethoxylated polyethylenimine dispersed silicone elastomer. obtained laser-induced graphene be further selectively functionalized conductive nanomaterials enzymes enhanced electrical conductivity selective sensing sweat biomarkers. possible combination sensors real-time biofluid analysis RF energy harvesting communication promises standalone stretchable platform based same material process.

Language: Английский

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Thermoelectric porous laser-induced graphene-based strain-temperature decoupling and self-powered sensing

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 17, 2025

Despite rapid developments of wearable self-powered sensors, it is still elusive to decouple the simultaneously applied multiple input signals. Herein, we report design and demonstration stretchable thermoelectric porous graphene foam-based materials via facile laser scribing for decoupled strain temperature sensing. The resulting sensor can accurately detect with a resolution 0.5°C gauge factor 1401.5. nanocomposites also explores synergistic effect between components greatly enhance Seebeck coefficient by almost four times (from 9.703 37.33 μV/°C). Combined stretchability 45%, platform allows early fire detection in remote settings accurate monitoring during wound healing process situ. concepts from this study could be leveraged prepare multimodal sensors sensing capability multi-parameter towards health monitoring.

Language: Английский

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