可重复编程的液晶介电弹性体,具有多模式驱动.
Chengcheng Zhang1, Guancong Chen1, Kaihang Zhang2,3
1State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China.
Advanced materials (Deerfield Beach, Fla.)
|January 17, 2024
概括
研究人员开发了液晶介电弹性体 (LC-DEs),可以根据温度改变执行模式. 这项创新允许具有可重新配置功能的可适应软机器人,模仿生物系统.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 机器人技术 机器人技术 机器人技术
背景情况:
- 介电弹性体 (DE) 提供类似肌肉的驱动,但仅限于单一的固定模式.
- 生物系统表现出适应性驱动,这是当前DE设备缺乏的能力.
- 可重新配置的执行对于先进的软机器人和仿生应用至关重要.
研究的目的:
- 开发具有可重新配置,多式联动的新型液晶介电弹性体 (LC-DEs).
- 为了使DE设备能够根据温度等外部刺激来改变执行模式.
- 创建具有适应能力的软机器人组件.
主要方法:
- 液晶介电弹性体 (LC-DEs) 的制备.
- 利用热触发的液晶相转换来改变材料形状和曲刚度.
- 编程和重编程材料形状通过力导向溶剂蒸发和债券交换激活的应力放松.
- 在应用电场下的调动模式的研究.
主要成果:
- 电流电阻表现出不同的介电驱动模式,对应于相位过渡诱导的不同形状.
- 材料的形状和刚性在液晶相变化之前和之后是可重编程的.
- 实现了显著减少的驱动电场 (8 V μm-1) 和双向驱动.
- 通过温度变化可控制的多式介电驱动行为.
结论:
- 已开发的LC-DE提供了可适应的多式联动,克服了传统DE的局限性.
- 能够重新编程形状和改变执行模式的能力为软机器人提供了设计多功能性.
- 这项工作为具有生物系统启发的自适应功能的软机器人铺平了道路.
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