Light‐Fueled Self‐Oscillation of a Viscoelastic Liquid Crystal Elastomer Oscillator

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

Published: Jan. 16, 2025

Self‐oscillating systems based on active materials offer significant potential for creating autonomous intelligent machines by harnessing environmental energy and enabling self‐regulation. However, most such overlook the viscoelastic behavior of materials, which exhibit both elastic viscous deformation under load, underscoring importance studying these effects system performance. Herein, a liquid crystal elastomer (LCE) spring oscillator is presented its dynamic behaviors are investigated. The governing equations developed linear thermoviscoelastic model. analysis concludes that has supercritical Hopf bifurcation between static mode self‐oscillation mode. Exact expressions amplitude frequency, along with asymptotic analytic solutions, also provided. Additionally, key parameters influencing frequency self‐oscillating examined. Especially, viscoelasticity LCE fiber greatly affects point, amplitude, period oscillator. These results provide convenience guidance various applications, especially in related fields as soft robotics, micromechanical systems, harvesters.

Language: Английский

Enhanced leakage-proof performance of flexible phase change materials through the transformation of physicochemical crosslinked networks

Polymer, Journal Year: 2025, Volume and Issue: unknown, P. 128357 - 128357

Published: April 1, 2025

Language: Английский