Device, Journal Year: 2025, Volume and Issue: unknown, P. 100728 - 100728
Published: March 1, 2025
Language: Английский
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(36)
Published: May 14, 2023
Abstract Flexible strain sensors with high sensitivity and mechanical robustness are highly desirable for their accurate long‐term reliable service in wearable human‐machine interfaces. However, the current application of flexible has to face a trade‐off between robustness. The most representative examples micro/nano crack‐based serpentine meander‐based sensors. former one typically shows but limited robustness, while latter is on contrary. Herein, ultra‐robust sensitive developed by crack‐like pathway customization ingenious modulation low/high‐resistance regions meander structure. show cyclic stability (10 000 cycles), strong tolerance harsh environments, gauge factor (>1000) comparable that sensor, fast response time (<58 ms). Finally, integrated into sign language translation system, which wireless, low‐cost, lightweight. Recognition rates over 98% demonstrated 21 languages assistance machine learning. This system facilitates achieving barrier‐free communication signers nonsigners offers broad prospects gesture interaction.
Language: Английский
Citations
67
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)
Published: Jan. 6, 2024
Abstract Electronic waste is a growing threat to the global environment and human health, raising particular concerns. Triboelectric devices synthesized from sustainable degradable materials are promising electronic alternative, but mechanical mismatch at interface between polymer substrate electrodes remains unresolved in practical applications. This study uses sulfhydryl silanization reaction chemical selectivity site specificity of thiol–disulfide exchange dynamic covalent chemistry prepare tough monolithic‐integrated triboelectric bioplastic. The stress dissipated by bond adaptation interaction, which makes dielectric layer conductive have good adhesion effect (220.55 kPa). interfacial interlocking with gives bioplastic excellent tensile strength (87.4 MPa) fracture toughness (33.3 MJ m −3 ). Even when subjected tension force 10 000 times its weight, it still maintains stable output no visible cracks. provides new insights into design reliable environmentally friendly self‐powered devices, significant for development flexible wearable electronics.
Language: Английский
Citations
67
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: June 25, 2024
Abstract High-sensitivity strain sensing elements with a wide range, fast response, high stability, and small areas are desirable for constructing sensor arrays temporospatial resolution. However, current sensors rely on crack-based conductive materials having an inherent tradeoff between their area performance. Here, we present molecular-level crack modulation strategy in which use layer-by-layer assembly to introduce strong, dynamic, reversible coordination bonds MXene silver nanowire-matrixed film. We this approach fabricate stretchable very (0.25 mm 2 ). It also exhibits ultrawide working range (0.001–37%), sensitivity (gauge factor ~500 at 0.001% >150,000 35%), response time, low hysteresis, excellent long-term stability. Based high-performance element facile process, array device density of 100 per cm is realized. demonstrate the practical high-density as multichannel pulse system monitoring pulses terms spatiotemporal
Language: Английский
Citations
24
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(8), P. 10633 - 10645
Published: Feb. 17, 2024
High-performance flexible strain sensors with synergistic and outstanding thermal regulation function are poised to make a significant impact on next-generation multifunctional sensors. However, it has long been intractable optimize the sensing performance high conductivity simultaneously. Herein, novel sandwich-like sensor advanced capability was prepared by assembling electrospun thermoplastic polyurethane (TPU) fibrous membrane, MXene layer, TPU/boron nitride nanosheet (BNNS) composite films. The as-prepared demonstrates wide working range (∼100% strain), an ultrahigh gauge factor (2080.9), satisfactory reliability. Meanwhile, benefiting from uniform dispersion promising orientation of BNNSs in TPU composites, possesses 1.5 W·m–1·K–1, guaranteeing wearer comfort. Additionally, unique structure endows stretchability, breathability, biocompatibility, tunable electromagnetic interference shielding performances. Furthermore, integrated wireless motion monitoring device based this is rationally designed. It exhibits fast response time, recognition range, ability maintain skin temperature during prolonged physical activity. These encouraging findings provide new feasible approach designing high-performance versatile broad applications wearable technology.
Language: Английский
Citations
21
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 13, 2025
Abstract Flexible sensors are increasingly recognized for their transformative potential in wearable electronic devices, medical monitoring, and human‐computer interaction. Despite the advancements, developing a flexible sensor array with simple structure large area preparation effective signal sensing monitoring capabilities remains challenging. In this study, hierarchical rGO‐based triboelectric (HG‐FTS) is scalably prepared by blade‐coating approach, which nitrogen‐doped reduced graphene oxide (rGO) sheet hierarchically deposited polydimethylsiloxane (PDMS) layer. The performed single electrode mode not only demonstrates exceptional reliability consistency but also achieves maximum voltage of ≈129 V power density ≈0.5 W m −2 . These characteristics enable real‐time human physiological signals joint motion high fidelity. Furthermore, an intelligent interactive control system developed using HG‐FTS, featuring digital touch screen rectangular pattern. build can be successfully used pressure sensing, object shape recognition, trajectory tracking. This work provides viable solution to high‐performance manufacturing application HG‐FTS interaction, sensing.
Language: Английский
Citations
2
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 21, 2025
Abstract Hydrogel‐based electrodes are widely used in electrophysiological monitoring for personal disease prevention and home‐based healthcare. However, limited by the hydrogels’ low toughness, poor adhesion, weak electrical stability, motion artifacts device detachments inevitable after long‐term, continuous monitoring. Herein, novel liquid metal@silk fibroin peptide (LM@SF) core‐shell particles, which shell SF not only facilitates core LM's dispersion but also stabilizes free radicals, designed to initiate situ formation of hydrogel while simultaneously enhancing its conductivity. As applied monitoring, can maintain both a stable physical interface transmission skin, thus promoting signal acquisition quality obviously even during exercise long‐term wearing. At last, portable flexible patch with small volume (70 × 35 2 mm) light weight (7 g) is developed achieve electrocardiogram (ECG) via wireless transmission, demonstrating high potentials telemedicine.
Language: Английский
Citations
2
ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(35), P. 41906 - 41915
Published: Aug. 23, 2023
With the rapid development of electronic information technology, composite materials with outstanding performance in terms electromagnetic interference (EMI) shielding and strain sensing are crucial for next-generation smart wearable devices. However, fabrication flexible films dual functionality remains a significant challenge. Herein, multifunctional exciting EMI properties were constructed using facile vacuum-assisted filtration process transfer method. The consisted ultrathin AgNW/MXene (Ti3C2Tx)/AgNW conductive networks (1 μm) attached to polydimethylsiloxane (PDMS) substrate. obtained AgNW/MXene/PDMS film exhibited an exceptional effectiveness 50.82 dB good flexibility (retaining 93.67 90.18% its original value after 1000 bending stretching cycles, respectively), which attributed enhanced multilayer internal reflection network created by AgNWs MXene as well synergistic effect PDMS. Besides shielding, also displayed remarkable properties. They wide linear range tensile up 68% gauge factor 468. showed fast response, ultralow detection limit, high mechanical stability. Interestingly, could detect motion voice recognition, demonstrating their potential sensors. This study highlights resisting radiation monitoring human motion, thereby providing promising solution devices complex environments.
Language: Английский
Citations
36
Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 12(12), P. 6826 - 6874
Published: Dec. 19, 2023
Microstructures can endow flexible pressure sensors with high sensitivity and a wide linear sensing range, ensuring the comprehensive performance of medical monitoring intelligent robots.
Language: Английский
Citations
29
Advanced Science, Journal Year: 2023, Volume and Issue: 11(2)
Published: Nov. 20, 2023
Abstract More recently, soft actuators have evoked great interest in the next generation of robots. Despite significant progress, majority current suffer from lack real‐time sensory feedback and self‐control functions, prohibiting their effective sensing multitasking functions. Therefore, this work, a near‐infrared‐driven bimorph membrane, with self‐sensing loop control is produced by layer (LBL) assembling MXene/PDDA (PM) onto liquid crystal elastomer (LCE) film. The versatile integration strategy successfully prevents separation issues that arise moduli mismatch between actuating layers, ultimately resulting stable tightly bonded interface adhesion. As result, resultant membrane exhibited excellent mechanical toughness (tensile strengths equal to 16.3 MPa (||)), strong actuation properties (actuation stress 1.56 MPa), (gauge factor 4.72) capabilities. When applying near‐infrared (NIR) laser control, system can perform grasping, traction, crawling movements. Furthermore, wing closed‐loop controlled motion are demonstrated combination insect microcontroller unit (MCU) models. remote precision capabilities actuator pave way for complex precise task modulation future.
Language: Английский
Citations
24
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)
Published: Nov. 22, 2024
Abstract Liquid leakage of pipeline networks not only results in considerable resource wastage but also leads to environmental pollution and ecological imbalance. In response this global issue, a bioinspired superhydrophobic thermoplastic polyurethane/carbon nanotubes/graphene nanosheets flexible strain sensor (TCGS) has been developed using combination micro-extrusion compression molding surface modification for real-time wireless detection liquid leakage. The TCGS utilizes the synergistic effects Archimedean spiral crack arrays micropores, which are inspired by remarkable sensory capabilities scorpions. This design achieves sensitivity 218.13 at 2%, is an increase 4300%. Additionally, it demonstrates exceptional durability withstanding over 5000 usage cycles. robust superhydrophobicity significantly enhances stability detecting small-scale leakage, enabling precise monitoring across wide range sizes, velocities, compositions while issuing prompt alerts. provides critical early warnings both industrial pipelines potential scenarios everyday life. development utilization ultrasensitive sensors offer innovative effective solution
Language: Английский
Citations
11