Advances in triboelectric nanogenerators for self‐powered wearable respiratory monitoring

FlexMat., Journal Year: 2024, Volume and Issue: 1(1), P. 5 - 22

Published: April 1, 2024

Abstract Triboelectric nanogenerators (TENGs) have recently gained attention as a compelling platform technology for building wearable bioelectronics. Aside from being self‐powered, TENGs are lightweight, low in cost, rich material choice, comfortable to wear, and increasingly versatile with advances sensitivity efficiency. Due these features, become appealing biomedical sensing applications, especially human respiration monitoring. A wealth of information can be collected by breath‐induced electrical signals, which crucial the analysis patient's respiratory condition early detection harmful respiratory‐linked diseases. thus been used continuously collect important data, breathing patterns, flow rate, intensity an individual's cycle chemicals that may present their breath. This review paper provides overview recent developments TENG‐based monitoring well future opportunities challenges healthcare.

Language: Английский

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Sustainable building materials: A comprehensive study on eco-friendly alternatives for construction

Composites and Advanced Materials, Journal Year: 2024, Volume and Issue: 33

Published: Feb. 1, 2024

An in-depth review of a varied range eco-friendly options for construction is done in this thorough research on sustainable building materials. With increased worries about environmental deterioration, the sector increasingly focusing long-term solutions. This looks into variety materials, including bamboo, engineered wood products, recycled composites, and optimal concrete mixtures. The study underlines importance compressive, tensile, flexural strengths, which are basic feature structural integrity. also gives useful insights their practical applicability real-world projects by assessing strength various Furthermore, examines effect these taking account characteristics such as renewability, recyclability, energy efficiency. Laboratory tests were conducted to determine fundamental properties selected materials part investigations. emphasizes ecological advantages adopting alternatives through life cycle assessments comparative studies. output can be served reference architects, engineers, policymakers, providing complete knowledge critical role developing greener, more resilient built environment.

Language: Английский

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Extreme Orientation of Stereocomplexed Poly(lactic acid) Induced Ultrafine Electroactive Nanofibers for Respiratory Healthcare and Intelligent Diagnosis

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(24), P. 9290 - 9300

Published: June 5, 2024

Biodegradable and renewable poly(lactic acid) (PLA) fibrous membranes have emerged as a promising approach to replace traditional polymeric air filters, but are still challenged by relatively low electroactivity poor electret properties. Herein, we disclose an effective electrospinning strategy substantially promote the extreme orientation of stereocomplexed PLA (OSC-PLA), conferring significant alignment refinement electrospun nanofibers (diameter ∼370 nm), well facilitate formation electroactive phases (i.e., β-phase, phase, stereocomplex crystals). Benefiting from well-tailored morphology remarkable electroactivity, OSC-PLA nanofibrous (NFMs) were characterized largely improved dielectric properties, surface potential (over 3.64 kV), PM0.3 filtration properties (93.33% at 85 L/min) compared pure PLLA membrane (2.01 kV 80.21%). It enabled assembly triboelectric nanogenerator (TENG) filters using NFMs active layer, yielding excellent charge regeneration mechanisms output current nearly 80 nA, driven respiratory vibrations L/min, thus permitting high humidity resistance, exemplified removal efficiency 95.02% RH 90%. Moreover, deep machine learning man–machine interaction integrated with OSC-PLA-based TENGs, demonstrating long-term monitoring high-precision diagnosis (accuracy 96.88%) various patterns. The proposed ecofriendly ultrafine highly appealing for sustained healthcare self-powered intelligent diagnosis.

Language: Английский

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Lotus leaf-inspired poly(lactic acid) nanofibrous membranes with enhanced humidity resistance for superefficient PM filtration and high-sensitivity passive monitoring

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 488, P. 137516 - 137516

Published: Feb. 5, 2025

Language: Английский

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Plant-mimicking biodegradable nanofibers for enhanced PM capturing and AI-assisted high-accuracy respiratory diagnosis

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131459 - 131459

Published: Jan. 5, 2025

Language: Английский

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Advances in Nanofiber Filtration Membranes: From Principles to Intelligent Applications

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

Published: Feb. 21, 2025

Abstract Air pollution is a silent killer. It poses significant health threat, affecting over 80% of the global population and leading to respiratory cardiovascular diseases. Electrospun nanofiber filtration membranes have made tremendous progress due their large surface areas, adaptable structures, self‐polarizing properties. This review explores recent developments in across four key areas: principles, material design, structural innovations, functionalities. Initially, classical mechanisms discussed, followed by an overview sustainable materials green technologies for advanced filtration. then delve into advancements, highlighting nanofibers with high roughness, ultra‐fine diameters, bimodal distributions. Inspired nature, these innovations led creation high‐performance membranes. Current research focuses on anti‐bacterial antiviral membranes, as well intelligent systems capable sensing physiological signals. Last, existing challenges membrane development, such new mechanisms, preparation technologies, reusable highlighted. anticipated that solutions problems will open up possibilities functional biodegradable smart wearables, upscale healthcare.

Language: Английский

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Self-Charging, Breathable, and Antibacterial Poly(lactic acid) Nanofibrous Air Filters by Surface Engineering of Ultrasmall Electroactive Nanohybrids

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 4, 2023

Despite the great promise in development of biodegradable and ecofriendly air filters by electrospinning poly(lactic acid) (PLA) nanofibrous membranes (NFMs), as-electrospun PLA nanofibers are generally characterized poor electroactivity smooth surface, challenging exploitation electrostatic adsorption physical interception that need for efficient removal pathogens particulate matters (PMs). Herein, a combined "electrospinning–electrospray" strategy was disclosed to functionalize direct anchoring highly dielectric BaTiO3@ZIF-8 nanohybrids (BTO@ZIF-8), conferring simultaneous promotion surface roughness, electret properties (surface potential as high 7.5 kV), self-charging capability (∼190% increase tribo-output voltage compared pure PLA). Benefiting from well-tailored morphology increased electroactivity, electrospun–electrosprayed PLA/BTO@ZIF-8 exhibited excellent PM-capturing performance (up 96.54% PM0.3 99.49% PM2.5) while providing desirable resistance (only 87 Pa at 32 L/min) due primarily slip flow molecules over nanohybrid protrusions. This accompanied antibacterial (99.9% inhibition against both Staphylococcus aureus Escherichia coli), arising presumably synergistic effects enhanced reactive oxygen species (ROS) generation, plentiful ion release, charges. Our proposed opens up pathways afford exceptional combination high-efficiency low-resistance filtration, performance, mechanical robustness without sacrificing biodegradation profiles NFMs, holding implications long-term healthcare.

Language: Английский

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Bio-inspired vibration isolator with triboelectric nanogenerator for self-powered monitoring

Mechanical Systems and Signal Processing, Journal Year: 2024, Volume and Issue: 223, P. 111854 - 111854

Published: Aug. 24, 2024

Language: Английский

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Exploring advances in nanofiber-based face masks: a comprehensive review of mechanical, electrostatic, and antimicrobial functionality filtration for the removal of airborne particulate matter and pathogens

Emergent Materials, Journal Year: 2024, Volume and Issue: 7(3), P. 765 - 800

Published: Jan. 16, 2024

Abstract The filtration of airborne particulate matter (PM) and aerosols utilizing nonwoven fibrous materials has received significant research concern due to the continuing global pandemics, especially outbreak coronavirus disease (COVID-19), particularly for face masks as a measure personal protection. Although spun-bond or melt-blown fabrics are among pioneer in development polymer microfiber-based air filters on large scale, relatively new manufacturing processes like electrospinning solution blow spinning (SBS) gaining momentum manufacturers filter membranes. high performance nanofiber is their surface area volume ratio which increases interaction between PM improves electrostatic charge distribution electret filters, allowing enhanced capture capability based deposition. Moreover, small diameter nanofibrous breathability mask by providing slip effect, turn reduces pressure drop through membrane. This paper provides comprehensive review contemporary advances masks, detailing working mechanism involved, reviewing recent experimental studies, discussing improvements efficiency three main strategies, including mechanical antimicrobial functionality. Furthermore, prospective introduced considers synergistic combination effects mechanisms designing multifunctional structure that can efficiently wide range with higher lower drops pressure. New trends activity smart material-based membranes fight against infectious agents also described.

Language: Английский

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Fabrication of reusable bioprotective nanofabric with passive nano-Ag/Joule thermal disinfection properties for real-time wireless fine biomotion and gesture sensing

Nano Energy, Journal Year: 2024, Volume and Issue: 124, P. 109525 - 109525

Published: March 19, 2024

Language: Английский

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