Soft, Stretchable, and Pneumatically Triggered Thermochromic Optical Filters with Embedded Phosphorescence

Abstract

This study integrates liquid metal wires, persistent phosphorescent particles, and thermochromic pigments within a stretchable elastomer to control light emission. After ultraviolet excitation, the pigments mask phosphorescence at room temperature. Joule heating changes their optical transmission, allowing the emitted color and intensity to be tuned. Stretching, compression, and pneumatic inflation change the resistance of the liquid metal circuits, coupling mechanical deformation to an optical response. These soft optical filters offer a route to responsive electronic skins for soft robotics and stretchable devices.

Yiliang Lin

Assistant Professor in Chemical & Biomolecular Engineering

My research interests include soft matter engineering, wearable electronics, biointerfaces and living materials.