Recent Progress on Flexible Self‐Powered Tactile Sensing Platforms for Health Monitoring and Robotics

Small, Journal Year: 2024, Volume and Issue: 20(46)

Published: Aug. 11, 2024

Abstract Over the past decades, tactile sensing technology has made significant advances in fields of health monitoring and robotics. Compared to conventional sensors, self‐powered sensors do not require an external power source drive, which makes entire system more flexible lightweight. Therefore, they are excellent candidates for mimicking perception functions wearable ideal electronic skin (e‐skin) intelligent robots. Herein, working principles, materials, device fabrication strategies various platforms introduced first. Then their applications robotics presented. Finally, future prospects systems discussed.

Language: Английский

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Bioinspired Tunable Helical Fiber-Shaped Strain Sensor with Sensing Controllability for the Rehabilitation of Hemiplegic Patients

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

Published: Jan. 11, 2025

Fiber-based strain sensors, as wearable integrated devices, have shown substantial promise in health monitoring. However, current sensors suffer from limited tunability sensing performance, constraining their adaptability to diverse human motions. Drawing inspiration the structure of spiranthes sinensis, this study introduces a unique textile wrapping technique coil flexible silver (Ag) yarn around surface multifilament elastic polyurethane (PU), thereby constructing helical fiber-based sensor. The synergistic interaction between PU core and outer Ag enhances mechanical strength stretchability sensor, while external offers high conductivity. By adjusting spacing coils on we achieve precise control over both sensitivity range. Specifically, experimental results show that with pitch 1.25 mm, range reaches up 150%, gauge factor (GF) is 2.6; when adjusted 5 within 60% range, GF value significantly increases 9.3. Based these excellent performance metrics, further apply sensor conductor ECG monitoring garments, successfully verifying its practicality cardiac Additionally, developed smart glove for hand function rehabilitation training, utilizing wireless signal transmission promote recovery hemiplegic patients. also capable effectively respiratory rate pulse, showing broad prospects fields medicine healthcare.

Language: Английский

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Harmonizing Elastic Modulus and Dielectric Constant of Elastomers for Improved Pressure Sensing Performance

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(25), P. 32727 - 32738

Published: June 12, 2024

Enhancing the sensitivity of capacitive pressure sensors through microstructure design may compromise reliability device and rely on intricate manufacturing processes. It is an effective way to solve this issue by balancing intrinsic properties (elastic modulus dielectric constant) layer materials. Here, we introduce a liquid metal (LM) hybrid elastomer prepared chain-extension-free polyurethane (PU) LM. The synergistic strategies extender-free LM doping effectively reduce elastic (7.6 ± 0.2−2.1 0.3 MPa) enhance constant (5.12−8.17 @1 kHz) elastomers. Interestingly, combines reprocessability, recyclability, photothermal conversion. obtained flexible sensor can be used for detecting hand throat muscle movements, high-precision speech recognition seven words has been using convolutional neural network (CNN) in deep learning. This work provides idea designing wearable, recyclable, intelligent control sensors.

Language: Английский

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Mechanically Robust and Ultrasensitive Natural Rubber/PEDOT:PSS Foam for Piezoresistive Sensors and Motion Monitoring

ACS Applied Electronic Materials, Journal Year: 2025, Volume and Issue: 7(1), P. 313 - 321

Published: Jan. 3, 2025

The development of low-cost and high-performance flexible polymer-based piezoresistive sensors is great significance in the fields human–machine interaction, motion monitoring, wearable technologies. However, traditional are generally prepared by immersion spray-coating conductive fillers on polymer foams, easy to fall off from framework under external stress, which makes it difficult for sensor meet long-term use requirements. In this paper, a stable foam was fabricated cofoaming natural latex poly(3,4-ethylenedioxythiophene) (PEDOT):poly(styrenesulfonate) (PSS) fabricate NR/PEDOT:PSS foam. PEDOT can be uniformly distributed NR latex. PSS with emulsification feature also introduces secondary pore This as-prepared hierarchical porous structure has merits fabrication, robust mechanical properties, excellent flexibility, good reproducibility (1000 cycles), durability. Additionally, exhibits wide sensing range, fast response (140 ms), recovery time (120 ms). These advantages enable effectively differentiate between movements different joints various behaviors. Furthermore, provide capabilities gait monitoring warning. Overall, demonstrates significant potential applications electronics.

Language: Английский

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Recent advances in multimodal mechanoluminescent sensors enabled by nanostructure design

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Multifunctional coupling and signal decoupling achieved through nanostructure supramolecule design, enable multimodal mechanoluminescent materials to play an increasingly important role in interdisciplinary applications cutting-edge fields.

Language: Английский

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Polymeric Nanomaterials for Atherosclerosis Diagnosis and Treatment

Polymer science & technology., Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Language: Английский

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