Nano Energy, Год журнала: 2025, Номер unknown, С. 111117 - 111117
Опубликована: Май 1, 2025
Язык: Английский
Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(16), С. 9296 - 9321
Опубликована: Янв. 1, 2024
This review covers recent advancements in flexible resistive tactile pressure sensors, including operational principles, performance metrics, material choices, structural design, and applications, as well future challenges.
Язык: Английский
Процитировано
33
Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101434 - 101434
Опубликована: Янв. 1, 2025
Процитировано
6
Sensors, Год журнала: 2025, Номер 25(3), С. 964 - 964
Опубликована: Фев. 5, 2025
Flexible tactile sensors are widely used in aerospace, medical and health monitoring, electronic skin, human–computer interaction, other fields due to their unique advantages, thus becoming a research hotspot. The goal is develop flexible sensor characterized by outstanding sensitivity, extensive detection range linearity, elevated spatial resolution, commendable adaptability. Among several strategies like capacitive, piezoresistive, triboelectric sensors, etc., we focus on piezoelectric because of self-powered nature, high quick response time. These can respond wide dynamic mechanical stimuli turn them into measurable electrical signals. This makes it possible accurately detect objects, including shapes textures, for sense touch real work encapsulates current advancements focusing enhanced material properties, optimized structural design, improved fabrication techniques, broadened application domains. We outline the challenges facing provide inspiration guidance future development.
Язык: Английский
Процитировано
3
Micromachines, Год журнала: 2025, Номер 16(4), С. 386 - 386
Опубликована: Март 28, 2025
Polyvinylidene fluoride (PVDF) polymer films, renowned for their exceptional piezoelectric, pyroelectric, and ferroelectric properties, offer a versatile platform the development of cutting-edge micro-scale functional devices, enabling innovative applications ranging from energy harvesting sensing to medical diagnostics actuation. This paper presents an in-depth review material fabrication methodologies, characterization PVDF films. Initially, comprehensive description physical, mechanical, chemical, thermal, electrical, electromechanical properties is provided. The unique combination coupled with its excellent chemical resistance mechanical strength, makes highly valuable wide range applications. Subsequently, techniques, phase transitions achievement methods, copolymerization composites employed improve optimize were elaborated. Enhancing transition in especially promoting high-performance β-phase, can be achieved through various processing leading significantly enhanced piezoelectric pyroelectric which are essential diverse concludes discussion associated techniques crystal structure, ferroelectric, electromechanical, provide crucial insights into directly impacting performance By understanding these aspects, researchers engineers gain optimizing PVDF-based devices applications, including energy-harvesting, sensing, biomedical thereby driving advancements fields.
Язык: Английский
Процитировано
3
Nanomaterials, Год журнала: 2024, Номер 14(5), С. 465 - 465
Опубликована: Март 4, 2024
Flexible electronics is a cutting-edge field that has paved the way for artificial tactile systems mimic biological functions of sensing mechanical stimuli. These have an immense potential to enhance human-machine interactions (HMIs). However, still faces formidable challenges in delivering precise and nuanced feedback, such as achieving high sensitivity emulate human touch, coping with environmental variability, devising algorithms can effectively interpret data meaningful diverse contexts. In this review, we summarize recent advances sensory systems, piezoresistive, capacitive, piezoelectric, triboelectric sensors. We also review state-of-the-art fabrication techniques Next, focus on applications HMIs, intelligent robotics, wearable devices, prosthetics, medical healthcare. Finally, conclude future development trends
Язык: Английский
Процитировано
16
Materials Chemistry and Physics, Год журнала: 2024, Номер 325, С. 129760 - 129760
Опубликована: Июль 26, 2024
Язык: Английский
Процитировано
9
Macromolecules, Год журнала: 2024, Номер 57(10), С. 4897 - 4905
Опубликована: Май 16, 2024
Poly(vinylidene fluoride) (PVDF) is a polymorphic semicrystalline polymer. To utilize its piezo-, pyro-, and ferroelectric applications, it ideal to fabricate the polar phases directly. Another way obtain PVDF transform original nonpolar α crystals into their γ counterparts through solid α–γ′ phase-transition. Therefore, better understanding of phase-transition great importance significance. Here, process has been tracked in situ real space using polarized optical microscope based on synchronous accompanied by change birefringence. Thus, propagation along perpendicular radial directions spherulites was quantitatively determined. It found that phase transition direction almost 3 times faster than tangential (1.07 vs 0.39 μm/min). Moreover, effect crystallization temperature subsequent annealing behavior explored. confirmed at high below onset melting provides thermal energy for thus endows efficiency speed. The speed decreases, however, when close peak temperature. This associated with lamellae, which adverse transformation TGTG′ T3GT3G′ conformation consequently hinders further demonstrated sample affects as well. crystallized higher an increased crystallinity thickened lamellae facilitate These results provide more insight PVDF.
Язык: Английский
Процитировано
7
Polymer Composites, Год журнала: 2024, Номер 45(12), С. 11044 - 11061
Опубликована: Май 14, 2024
Abstract Electromagnetic interference (EMI) shielding materials with easy processing, high electrical conductivity, and excellent absorption loss are urgently needed in aerospace, military stealth portable electronic devices. In this study, a polyvinylidene fluoride/multi‐walled carbon nanotubes (PVDF/MWCNTs)‐3 wt% composite film prepared by simple solution mixing polyethylene terephthalate (PET) nonwoven scraping method was used as the substrate, PVDF/MWCNTs/graphene oxide@multi‐walled (PVDF/MWCNTs/GO@MWCNTs) PVDF/MWCNTs/GO@MWCNTs/silver nanowires (PVDF/MWCNTs/GO@MWCNTs/AgNWs) bilayer films were vacuum‐assisted filtration (VAF). When amount of GO@MWCNTs 20 mL, conductivity PVDF/MWCNTs/GO@MWCNTs is 3.5 × 101 S m −1 , total EMI effectiveness (EMI SE T ) 15.5 dB efficiency A 10.7 dB, specific (SSE/T) 539.5 dB/ dB/(cm −2 g). AgNWs 25 PVDF/MWCNTs/GO@MWCNTs/AgNWs 0.47 mm thickness 1.6 10 4 69.1 61.1 SSE/T 2320.0 cm 2 g . The results show that played dominant role mechanism obtained films. addition GO@MWCNTs/AgNWs increases performance more than GO@MWCNTs. This mainly because GO， MWCNTs formed novel three‐dimensional conductive network structure inside due to their hydrogen bonding van der Waals forces, which carrier channels promotes interaction between internal microcurrents electromagnetic waves, achieving purpose attenuating waves. has good potential intelligence applications. Highlights Well‐dispersed highly hydrothermal synthesis. aspect ratio prepared. PVDF‐based 3D synergistic discussed.
Язык: Английский
Процитировано
5
Sensors, Год журнала: 2024, Номер 24(16), С. 5091 - 5091
Опубликована: Авг. 6, 2024
Sleep plays a role in maintaining our physical well-being. However, sleep-related issues impact millions of people globally. Accurate monitoring sleep is vital for identifying and addressing these problems. While traditional methods like polysomnography (PSG) are commonly used settings, they may not fully capture natural patterns at home. Moreover, PSG equipment can disrupt quality. In recent years, there has been growing interest the use sensors monitoring. These lightweight be easily integrated into textiles or wearable devices using technology. The flexible designed skin contact to offer continuous without being obtrusive home environment. This review presents an overview advancements made tracking body movements during sleep, which focus on their principles, mechanisms, strategies improved flexibility, practical applications, future trends.
Язык: Английский
Процитировано
5
Journal of Cleaner Production, Год журнала: 2024, Номер 446, С. 141426 - 141426
Опубликована: Фев. 26, 2024
Язык: Английский
Процитировано
4