Electrically Driven Liquid Crystal Elastomer Self-Oscillators via Rheostat Feedback Mechanism

Polymers, Journal Year: 2025, Volume and Issue: 17(5), P. 617 - 617

Published: Feb. 25, 2025

The reliance of feedback mechanisms in conventional light-fueled self-oscillating systems on spatially distributed light and intricately designed structures impedes their application development micro-robots, miniature actuators, other small-scale devices. This paper presents a straightforward rheostat mechanism to create an electrically driven liquid crystal elastomer (LCE) self-oscillator which comprises LCE fiber, rheostat, spring, mass. Based the electrothermally responsive model, we first derive governing equation for system's dynamics subsequently formulate asymptotic equation. Numerical calculations reveal two motion phases, i.e., static self-oscillating, elucidate behind self-oscillation. By employing multi-scale method, identify Hopf bifurcation establish analytical solutions amplitude frequency. influence various system parameters frequency self-oscillation was analyzed, with numerical being validated against results ensure consistency. proposed can be extended cases rheostats that have more general resistance properties offers advantages such as simple design, adjustable dimensions, rapid operation. findings are expected inspire broader design concepts applications soft robotics, sensors, adaptive structures.

Language: Английский

Light-fueled self-ejecting liquid crystal elastomer launcher inspired by lizard tail autotomy

Chaos Solitons & Fractals, Journal Year: 2025, Volume and Issue: 194, P. 116265 - 116265

Published: March 6, 2025

Language: Английский