Stretchable Triboelectric Self‐Powered Sweat Sensor Fabricated from Self‐Healing Nanocellulose Hydrogels

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(27)

Published: March 31, 2022

Abstract Though visualizing perspiration constituents is crucial for physiological evaluation, inadequate material healing and unreliable power supply methods restrict its applications. Herein, a fully flexible self‐powered sweat sensor fabricated from cellulose‐based conductive hydrogel to address these issues. The electrode composed of cellulose nanocomposite polymerized in situ with polyaniline cross‐linked polyvinyl alcohol/borax. nanocomposites furnish the tensile electrical self‐healing efficiencies exceeding 95% within 10 s, stretchability 1530%, conductivity 0.6 S m −1 . quantitatively analyzes Na + , K Ca 2+ contents perspiration, sensitivities 0.039, 0.082, 0.069 mmol –1 respectively, real time via triboelectric effect wirelessly transmits results user interface. This high flexibility, stability, analytical sensitivity selectivity provides new opportunities health monitoring.

Language: Английский

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Toxicity of metal-based nanoparticles: Challenges in the nano era

Frontiers in Bioengineering and Biotechnology, Journal Year: 2022, Volume and Issue: 10

Published: Nov. 10, 2022

With the rapid progress of nanotechnology, various nanoparticles (NPs) have been applicated in our daily life. In field metal-based NPs are an important component engineered NPs, including metal and oxide with a variety biomedical applications. However, unique physicochemical properties confer not only promising biological effects but also pose unexpected toxic threats to human body at same time. For safer application humans, we should comprehensive understanding NP toxicity. this review, summarize current knowledge about affecting their toxicity, mechanisms toxicological assessment, potential strategies mitigate toxicity status regulatory movement on Hopefully, near future, through convergence related disciplines, development nanotoxicity research will be significantly promoted, thereby making humans much safer.

Language: Английский

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Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

Nanomaterials, Journal Year: 2021, Volume and Issue: 11(11), P. 2975 - 2975

Published: Nov. 5, 2021

With the fast development of energy harvesting technology, micro-nano or scale-up harvesters have been proposed to allow sensors internet things (IoT) applications with self-powered self-sustained capabilities. Facilitation within smart homes, manipulators in industries and monitoring systems natural settings are all moving toward intellectually adaptable energy-saving advances by converting distributed energies across diverse situations. The updated developments major powered improved highlighted this review. To begin, we study evolution technologies from fundamentals various materials. Secondly, IoT discussed regarding current strategies for sensing. Third, subdivided classifications investigate typical new gas sensing, human monitoring, robotics, transportation, blue energy, aircraft, aerospace. Lastly, prospects cities 5G era summarized, along research application directions that emerged.

Language: Английский

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Design and synthesis of triboelectric polymers for high performance triboelectric nanogenerators

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(9), P. 3654 - 3678

Published: Jan. 1, 2023

The latest progress, and important experimental strategies conclusions on the design synthesis of thetriboelectric polymers are systemically summarized. A triboelectric polymer handbook with common their properties is listed.

Language: Английский

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Self‐Powered Active Sensing Based on Triboelectric Generators

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(33)

Published: April 21, 2022

Abstract The demand for portable and wearable chemical or biosensors their expeditious development in recent years has created a scientific challenge terms of continuous powering. As result, mechanical energy harvesters such as piezoelectric triboelectric generators (TEGs) have been explored recently either sensors to store charge small, but long‐life, energy‐storage devices power the sensors. use is particularly interesting, with multifunctional operations it possible reduce number needed system, which also helps overcome integration complexities. In this regard, TEGs are promising, autonomous biological sensors, they can be developed wide variety materials, electricity conversion modulated by various analytes. This review focuses on interesting dimension presents self‐powered active A brief discussion about TEG‐based physical, magnetic, optical included. influence environmental factors, figures merit, significance TEG design explained context sensing. Finally, key applications, challenges, future perspective detection via discussed view drive further advances field

Language: Английский

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Silver nanosheets doped polyvinyl alcohol hydrogel piezoresistive bifunctional sensor with a wide range and high resolution for human motion detection

Advanced Composites and Hybrid Materials, Journal Year: 2022, Volume and Issue: 5(2), P. 1196 - 1205

Published: May 9, 2022

Language: Английский

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Fabric‐Based TENG Woven with Bio‐Fabricated Superhydrophobic Bacterial Cellulose Fiber for Energy Harvesting and Motion Detection

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(45)

Published: July 28, 2023

Abstract Fabric‐based triboelectric nanogenerators (TENGs) exhibit superior output performance, flexibility, and wearability. However, the fabric structure often creates gaps that accumulate contaminants, which weaken performance durability of TENGs. To address this challenge, a novel eco‐friendly superhydrophobic fabric‐based TENG (SF‐TENG) woven with electroconductive bacterial cellulose fiber (SEBC fiber) is presented. construct durable superhydrophobicity, an ingenious bio‐fabricated method employed for shell–core structure. SEBC fibers excellent electroconductibility, mechanical property, biodegradability, superhydrophobicity. SF‐TENG displays maximum open‐circuit voltage 266.0 V, short‐circuit current 5.9 µA, power 489.7 µW, successfully powers devices such as stopwatch calculator. Abilities self‐cleaning anti‐fouling guarantee stable under harsh environmental conditions liquids pouring. Furthermore, intelligent clothing designed based on to detect motion signals, it further utilized Sports Health Monitoring System deep application. In summary, study provides strategy bio‐fabrication design preparation The demonstrates practicability, stability promising wearable in conditions.

Language: Английский

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Integrated Urinalysis Devices Based on Interface‐Engineered Field‐Effect Transistor Biosensors Incorporated With Electronic Circuits

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(36)

Published: July 19, 2022

Urinalysis is attractive in non-invasive early diagnosis of bladder cancer compared with clinical gold standard cystoscopy. However, the trace tumor biomarkers urine and particularly complex environment pose significant challenges for urinalysis. Here, a clinically adoptable urinalysis device that integrates molecular-specificity indium gallium zinc oxide field-effect transistor (IGZO FET) biosensor arrays, control panel, an internet terminal directly analyzing five bladder-tumor-associated proteins samples, reported classification. The IGZO FET biosensors engineered sensing interfaces provide high sensitivity selectivity identification environment. Integrating machine-learning algorithm, this can identify accuracy 95.0% cohort 197 patients 75 non-bladder individuals, distinguishing stages overall 90.0% assessing recurrence after surgical treatment. defines robust technology remote healthcare personalized medicine.

Language: Английский

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Eye tracking and eye expression decoding based on transparent, flexible and ultra-persistent electrostatic interface

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 7, 2023

Abstract Eye tracking provides valuable insight for analyzing visual attention and underlying thinking progress through the observation of eye movements. Here, a transparent, flexible ultra-persistent electrostatic sensing interface is proposed realizing active (AET) system based on induction effect. Through triple-layer structure combined with dielectric bilayer rough-surface Ag nanowire (Ag NW) electrode layer, inherent capacitance interfacial trapping density has been strongly enhanced, contributing to an unprecedented charge storage capability. The reached 1671.10 μC·m −2 charge-keeping rate 96.91% after 1000 non-contact operation cycles, which can finally realize oculogyric detection angular resolution 5°. Thus, AET enables real-time decoding movements customer preference recording eye-controlled human-computer interaction, supporting its limitless potentiality in commercial purpose, virtual reality, human computer interactions medical monitoring.

Language: Английский

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Robust superhydrophobic wearable piezoelectric nanogenerators for self-powered body motion sensors

Nano Energy, Journal Year: 2022, Volume and Issue: 107, P. 108095 - 108095

Published: Dec. 14, 2022

Language: Английский

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