Flexible Pressure Sensors Based on Polyvinylidene Fluoride: A Critical Review

Materials, Journal Year: 2025, Volume and Issue: 18(3), P. 615 - 615

Published: Jan. 29, 2025

With the advent of intelligent era, flexible piezoelectric tactile sensors, as key components for sensing information and transmitting signals, have received worldwide attention. However, pressure sensors are still currently limited, which severely restricts their practical applications. Furthermore, demonstrations conducted in labs not accurate to real-world scenarios. Thus, there is an urgent need further optimize intrinsic performance usage characteristics meet application requirements. As a representative piezoelectric, polyvinylidene fluoride (PVDF) exhibits significant advantages terms excellent flexibility, chemical stability, high electromechanical conversion, low cost, appropriate acoustic impedance, allow it serve core matrix sensors. This paper aims summarize very recent progress based on PVDF, including composition modulation, structure optimization, Based comprehensive summary studies, we propose rational perspectives strategies regarding PVDF-based provide some new insights research industrial communities.

Language: Английский

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Piezo-Photocatalytic Generation of H₂ with MoS₂/ZnO/CuFe₂O₄ Nanosheets

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Piezocatalytic generation of H2 is an emerging technology for the collection and application mechanical energy efficient production sustainable nowadays. To enable high-efficiency low-energy H2, we prepared three MoS2-based composites (MoS2/ZnO, MoS2/CuFe2O4, MoS2/ZnO/CuFe2O4) used them as catalysts green synthesis under mild magnetic stirring conditions (namely, hydraulic driving) to replace conventional ultrasonic vibration. MoS2/ZnO/CuFe2O4 displayed highest piezo-photocatalytic activity with a notable rate 3963 μmol g–1 h–1 in 10 vol % methanol–water mixture, accompanied by 1436, 3325, 2538 MoS2, MoS2/ZnO, respectively, at speed 400 rpm (hydraulic gradient, 0.123 s–1) 50 W light irradiation. A series characterizations analyses were performed comprehend insight into catalytic difference related reaction mechanisms. The improved performance can be ascribed enhanced absorption capability, reduced electron transfer resistance, separation efficiency charge carriers, all which are conducive evolution. Holes played major role generation. over was far higher than reported values obtained using ultrasound-driven piezocatalytic slurries. delivery also achieved lower consumption values. In comparison experiments this work, hydraulic-driven catalysis characterized remarkably requirements, less noise pollution, stronger structural stability catalysts. This study provides method renewable energy.

Language: Английский

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Preparation and In Vitro Characterization of Polyvinylidene Fluoride/Graphene Oxide Composite Nanofibers for Potential Wound Healing Application

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

ABSTRACT Recently, there has been a surge in scholarly interest regarding the application of sophisticated materials technology to expedite wound healing, particularly through integration nanocomposites endowed with multifaceted functionalities augment efficacy care products. In order propose an external power‐free healing dressing electrical stimulation function, polyvinylidene fluoride (PVDF) nanofibers incorporating graphene oxide (GO) at varying concentrations were fabricated via electrospinning technique. Scanning electron microscopy (SEM) was employed reveal morphology composite nanofibers. Fourier transform infrared (FTIR) spectroscopy and X‐ray diffraction (XRD) analyses confirmed transition PVDF from α phase β phase. The antibacterial PVDF/GO against Staphylococcus aureus rigorously examined. Results indicated marked enhancement correlation increasing content GO. Moreover, piezoelectric property assessments, cytotoxicity, hemolysis tests meticulously performed. outcomes suggested that containing 0.5 w/w% GO (PVDF/GO‐0.5) demonstrated superior performance across all evaluated metrics, terms mechanical properties, characteristics, efficacy. These findings imply PVDF/GO‐0.5 possess capability mimic endogenous electric field, which is beneficial boost cellular migration proliferation, thereby accelerating process. Overall, innovative proposed this study can be considered highly promising candidate field tissue engineering.

Language: Английский

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Electric-Assisted Coaxial Wet Spinning of Radially Oriented Boron Nitride Nanosheet-Based Composite Fiber with Highly Enhanced Piezoelectricity

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

Published: May 16, 2025

Language: Английский

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Polymer-Based Composites for Sorption, Energy Storage and Sensing Applications

Separation and Purification Reviews, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14

Published: Nov. 21, 2024

Polymer-based composites, due to their versatility and tunable properties, have become essential in sorption, energy storage, sensing applications. This review explores the fundamental chemistry underlying phase transitions within polymer matrices during composites formation, examining how anisotropic isotropic fillers influence mechanical, thermal, functional properties of polymer-based composites. The role is emphasized as a key factor shaping composite while porosity highlighted crucial attribute impacting sorption processes (absorption adsorption) which enhances utility these materials diverse modern transformations development resultant applications sensing, storage are investigated. It examined filler types morphologies affect performance Future challenges strategies for advancing sustainability also outlined, offering insights that support ongoing research advanced provides an analysis current advancements offers guidance future research, making it valuable both emerging established researchers field.

Language: Английский

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