Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163834 - 163834
Published: May 1, 2025
Language: Английский
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 9, 2025
Abstract The nanowatt‐level power density of current biobased piezoelectric energy harvesters restricts their applicative potential for the efficient conversion biomechanical energy. A high‐performing, fully renewable device incorporating green piezo‐active Rochelle salt in a laser‐drilled wood template is demonstrated to form ordered crystal pillar arrays by melt crystallization. Investigating effect different configurations on response, shearing design (45°‐oriented pillars) shows up 30 V and 4 µA – corresponding 10‐fold increase compared single‐crystalline salt. concept direct laser graphitization surfaces are using ink create electrodes low resistance (36 Ω sq −1 ). entire can be disassembled, recycled, reused. This nanogenerator outperforms state‐of‐the‐art ones competes with conventional lead‐based devices generation while showing significantly lower environmental footprint, as indicated life‐cycle assessment.
Language: Английский
Citations
2
Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132402 - 132402
Published: March 1, 2025
Language: Английский
Citations
2
Smart Materials and Structures, Journal Year: 2025, Volume and Issue: 34(3), P. 035012 - 035012
Published: Jan. 31, 2025
Abstract Polyvinylidene fluoride (PVDF) is a smart piezoelectric material with remarkable properties, offering vast potential for applications in areas such as energy harvesting, biomedical devices, and sensors. Among its various crystalline phases, the β -phase most electroactive, characterized by high dielectric properties. Recently, PVDF has been processed using 3D printing due to technology’s ability fabricate complex intricate structures, along advantages design flexibility, efficiency, rapid prototyping. While content often enhanced through additives or post-processing, limited attention given role of feedstock preparation extrusion parameters phase enhancement. In this study, we investigated how influence PVDF, aiming optimize properties applications. filaments were produced two different methods: direct from pellets solution-based process involving dissolution solvent, followed extrusion. Phase content, structural changes, thermal stability assessed x-ray diffraction (XRD), Fourier-transform infrared spectroscopy, differential scanning calorimetry. Results show that processing conditions significantly impact crystallinity concentration filaments. Notably, solution-processed exhibited higher compared pellet-based method, suggesting approach may enhance performance. This study highlights importance techniques means tailoring electroactive advanced 3D-printed
Language: Английский
Citations
1
Journal of Composites Science, Journal Year: 2025, Volume and Issue: 9(2), P. 71 - 71
Published: Feb. 5, 2025
Free-standing ferroelectric films have emerged as a transformative technology in the field of flexible electronics, offering unique properties that enable wide range applications, including sensors, actuators, and energy harvesting devices. This review paper explores recent advancements fabrication, characterization, application free-standing films, highlighting innovative techniques such multilayer structures van der Waals epitaxy enhance their performance while maintaining mechanical flexibility. We discuss critical role these next-generation devices, emphasizing potential for integration into multifunctional systems combine sensing capabilities. Additionally, we address challenges related to leakage currents, polarization stability, scalability must be overcome facilitate commercialization. By synthesizing current research findings identifying future directions, this aims provide comprehensive overview state-of-the-art impact on development sustainable efficient electronic technologies.
Language: Английский
Citations
1
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161818 - 161818
Published: March 1, 2025
Language: Английский
Citations
1
ACS Sensors, Journal Year: 2025, Volume and Issue: unknown
Published: March 26, 2025
In recent years, research on piezoelectric pressure sensing has attracted worldwide attention, as eagerly demanded by the development of wearable electronics. However, current sensors are unable to detect forces along different bending directions with a high resolution, thus limiting their applications in some typical scenarios. To address this issue, study designed novel composite structure ZnO nanorods loaded Ag nanoparticles (ZnONRs@Ag) and then embedded highly oriented polyvinylidene fluoride (PVDF) fibers. Due its unique orientation, sensor exhibits anisotropy, accurately identifying distinct (such perpendicular, parallel, or twisting). The optimized PVDF/ZnONRs@Ag device presents peak power density 308.1 nW cm-2 sensitivity 0.52 V N-1 remains stable after 7000 cycles at 1.4 Hz. devices utilized monitor various human movements harvest energy from them. This provides viable method for manufacturing self-powered directional sensors, contributing advancement technology harvesting applications.
Language: Английский
Citations
1
Biomacromolecules, Journal Year: 2024, Volume and Issue: 25(9), P. 5541 - 5591
Published: Aug. 12, 2024
The future development of wearable/implantable sensing and medical devices relies on substrates with excellent flexibility, stability, biocompatibility, self-powered capabilities. Enhancing the energy efficiency convenience is crucial, converting external mechanical into electrical a promising strategy for long-term advancement. Poly(vinylidene fluoride) (PVDF), known its piezoelectricity, an outstanding representative electroactive polymer. Ingeniously designed PVDF-based polymers have been fabricated as piezoelectric various applications. Notably, performance platforms determined by their structural characteristics at different scales. This Review highlights how researchers can strategically engineer structures microscopic, mesoscopic, macroscopic We discuss advanced research diverse designs in biomedical sensing, disease diagnosis, treatment. Ultimately, we try to give perspectives trends biomedicine, providing valuable insights further research.
Language: Английский
Citations
8
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154558 - 154558
Published: Aug. 5, 2024
Language: Английский
Citations
7
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(29), P. 38334 - 38344
Published: July 15, 2024
The surge in wearable electronics and Internet of Things technologies necessitates the development both flexible sensors a sustainable, efficient, compact power source. latter further challenges conventional batteries due to environmental pollution compatibility issues. Addressing this gap, piezoelectric energy harvesters emerge as one kind promising alternative convert mechanical from ambient sources electrical charge those low-energy-consumption electronic devices. Despite slightly lower performance compared with inorganic materials, polymers, notably poly(vinylidene fluoride-co-trifluoroethylene) P(VDF-TrFE), offer compelling properties for harvesting self-powered strain/stress sensing, though their is expected be enhanced via varieties modulation strategies microstructures. Herein, we reported controlled epitaxy process micrometer-thick copolymer films cooperation friction-transferred poly(tetrafluoroethylene) templates precise annealing conditions. Epitaxial P(VDF-TrFE) present averaged d33 coefficient −58.2 pC/N between 50 Hz 1 kHz good electromechanical thermal stability. Owing nature anisotropic crystallization, epitaxial exhibit an transverse property. were utilized monitoring human pulsation respiration. This study provided feasible route high-performance devices meet requirement electronics.
Language: Английский
Citations
5
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 30, 2024
Abstract Conventional acoustic sensors used in human–machine interfaces often face challenges such as power supply requirements, limited sensitivity, and inability to tune their frequency response. A self‐powered, highly sensitive, frequency‐tunable triboelectric sensor inspired by the human cochlea is introduced. By mimicking hair cells organ of Corti, a tapered microhair‐structured ferroelectric poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) barium titanate nanoparticle (BTNP) composite film proposed, which demonstrates 16‐fold increase output voltage (1.3 V) compared planar one at 2.8 Pa. Furthermore, selectivity basilar membrane with gradient structural variations, integrating mass‐beam diaphragm proposed varying kirigami length circular mass diameter that enables precise tuning resonance sensor, resulting 32 times improvement sensitivity (860 mV Pa −1 ) nonbiomimetic (28 an expanded dynamic range. The differentiates between voices different frequencies. robotic hand integrated responds stimuli programmed gestures, highlights its potential interfaces. biomimetic approach developing offers new possibilities for intuitive immersive
Language: Английский
Citations
5