Stretchable Mechano‐Electro‐Optical Coupling Devices

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 20, 2025

Abstract Flexible multi‐signal coupling devices are essential for intelligent sensing and information processing. However, the development of stretchable remains challenging. Herein, a sandwich‐structured, mechano‐electro‐optical (MEOC) device is introduced that outputs both electrical optical signals during mechanical stretching. A nanometer‐thick gold film deposited on sides electroluminescent layer, facilitating reversible formation microcrack networks These exhibit strain‐dependent changes in resistance transmittance, which modulate device's outputs. The MEOC achieves an ultralow strain detection threshold 0.05% high stretchability up to 80%. Two variations with thickness‐patterned electrodes designed demonstrated dynamic encryption decryption. As proof concept, used joint‐based health management, showcasing its potential display applications. This holds significant promise displays interactive devices.

Language: Английский

Modeling and Relative Permittivity Modulation of Cu/PDMS Capacitive Flexible Sensor for Pressure Sensing

Sensors, Journal Year: 2025, Volume and Issue: 25(3), P. 637 - 637

Published: Jan. 22, 2025

This study aims to establish an equivalent parallel capacitance model for a copper/polydimethylsiloxane (Cu/PDMS) capacitive flexible pressure sensor and modulate its relative permittivity optimize sensing performance. The Cu/PDMS composite material is ideal dielectric layer sensors due high constant tunable elasticity. By adjusting the different mixing ratios of PDMS copper particles in micro size, components structure properties can be modified, thereby affecting electrical mechanical performance sensor. We used finite element analysis (FEA) studied changes under various normal loading conditions assess sensitivity distribution characteristics. Experimental results show that has good repeatability range 0 50 kPa. Additionally, we explored effect addition carbon black particles. It could inferred added enhance conductivity, which would consequenced by optimization Cu black’s low density, it mechanically restore some flexibility up nearly 20%. Through these studies, our work provide theoretical support design application sensors.

Language: Английский

A Bioinspired Fish Scale-Based Flexible Strain Sensor for Human Motion Signal Detection

Published: Jan. 1, 2025

Language: Английский