A self-powered flexible tactile sensor utilizing chemical battery reactions to detect static and dynamic stimuli

Nano Energy, Год журнала: 2024, Номер 124, С. 109461 - 109461

Опубликована: Март 5, 2024

Язык: Английский

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Ultrasensitive Wearable Pressure Sensors with Stress‐Concentrated Tip‐Array Design for Long‐Term Bimodal Identification

Advanced Materials, Год журнала: 2024, Номер 36(45)

Опубликована: Июль 15, 2024

Abstract The great challenges for existing wearable pressure sensors are the degradation of sensing performance and weak interfacial adhesion owing to low mechanical transfer efficiency differences at skin–sensor interface. Here, an ultrasensitive sensor is reported by introducing a stress‐concentrated tip‐array design self‐adhesive interface improving detection limit. A bipyramidal microstructure with various Young's moduli designed improve from 72.6% 98.4%. By increasing difference in modulus, it also mechanically amplifies sensitivity 8.5 V kPa −1 limit 0.14 Pa. hydrogel developed strengthen sensor–skin interface, which allows stable signals long‐term real‐time monitoring. It enables generating high signal‐to‐noise ratios multifeatures when wirelessly monitoring pulse eye muscle movements. Finally, combined deep learning bimodal fused network, accuracy fatigued driving identification significantly increased 95.6%.

Язык: Английский

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Traditional Chinese Medicine (TCM)‐Inspired Fully Printed Soft Pressure Sensor Array with Self‐Adaptive Pressurization for Highly Reliable Individualized Long‐Term Pulse Diagnostics

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 30, 2024

Abstract Reliable, non‐invasive, continuous monitoring of pulse and blood pressure is essential for the prevention diagnosis cardiovascular diseases. However, wave varies drastically among individuals or even over time in same individual, presenting significant challenges existing sensing systems. Inspired by methods traditional Chinese medicine (TCM), this work reports a self‐adaptive platform (PSP) that combines fully printed flexible sensor array with an adaptive wristband‐style system can identify optimal signal. Besides detected rate/width/length, “Cun, Guan, Chi” position, “floating, moderate, sinking” features, PSP combined machine learning‐based linear regression model also accurately predict such as systolic, diastolic, mean arterial values. The developed diagnostic demonstrated highly reliable long‐term analysis across multiple human subjects time. design concept proof‐of‐the‐concept demonstrations pave way future developments devices/systems individualized complex practical environments personalized medicine, along support development digital TCM.

Язык: Английский

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Bioinspired Suspended Sensing Membrane Array with Modulable Wedged‐Conductive Channels for Crosstalk‐Free and High‐Resolution Detection

Advanced Science, Год журнала: 2024, Номер 11(28)

Опубликована: Май 8, 2024

Abstract High spatial‐resolution detection is essential for biomedical applications and human‐machine interaction. However, as the sensor array density increases, miniaturization will lead to interference between adjacent units deterioration in sensing performance. Here, inspired by cochlea's structure, a high‐density flexible pressure featuring with suspended membrane sensitivity‐enhanced customized channels presented crosstalk‐free high‐resolution detection. By imitating basilar attached spiral ligaments, fixed onto high‐stiffness substrate cavities, forming stable braced isolation provide an excellent capability (crosstalk coefficient: 47.24 dB) integration (100 within 1 cm 2 ). Similar opening of ion hair cells, wedge‐type expansion embedded cracks introduced stress concentration structures enables high sensitivity (0.19 kPa −1 ) large measuring range (400 kPa). Finally, it demonstrates promising distributed displays condition monitoring medical‐surgical intubation.

Язык: Английский

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Less is more: Enabling complex human motion capture with a printed low-pixel strain sensor array

Nano Energy, Год журнала: 2024, Номер 123, С. 109350 - 109350

Опубликована: Фев. 1, 2024

Язык: Английский

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