Suppr超能文献

具有可逆形状变形和变色功能的三维温致变色液晶弹性体结构,用于软机器人。

Three-dimensional thermochromic liquid crystal elastomer structures with reversible shape-morphing and color-changing capabilities for soft robotics.

机构信息

Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA.

Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA.

出版信息

Soft Matter. 2022 Sep 21;18(36):6857-6867. doi: 10.1039/d2sm00876a.

Abstract

Functional structures with reversible shape-morphing and color-changing capabilities are promising for applications including soft robotics and biomimetic camouflage devices. Despite extensive studies, there are few reports on achieving both reversible shape-switching and color-changing capabilities within one structure. Here, we report a facile and versatile strategy to realize such capabilities spatially programmed liquid crystal elastomer (LCE) structures incorporated with thermochromic dyes. By coupling the shape-changing behavior of LCEs resulting from the nematic-to-isotropic transition of liquid crystals with the color-changing thermochromic dyes, 3D thermochromic LCE structures change their shapes and colors simultaneously, which are controlled by the nematic-isotropic transition temperature of LCEs and the critical color-changing temperature of dyes, respectively. Demonstrations, including the simulated blooming process of a resembled flower, the camouflage behavior of a "butterfly"/"chameleon" robot in response to environmental changes, and the underwater camouflage of an "octopus" robot, highlight the reliability of this strategy. Furthermore, integrating micro-ferromagnetic particles into the "octopus" thermochromic LCE robot allows it to respond to thermal-magnetic dual stimuli for "adaptive" motion and diverse biomimetic motion modes, including swimming, rolling, rotating, and crawling, accompanied by color-changing behaviors for camouflage. The reversibly reconfigurable and color-changing thermochromic LCE structures are promising for applications including soft camouflage robots and multifunctional biomimetic devices.

摘要

具有可逆形状变形和变色能力的功能结构有望应用于软机器人和仿生伪装设备等领域。尽管已经进行了广泛的研究,但在一个结构中实现可逆形状切换和变色能力的报道很少。在这里,我们报告了一种简便而通用的策略,可以实现这种功能——将具有热致变色染料的空间编程液晶弹性体(LCE)结构结合在一起。通过将液晶从向列相到各向同性转变导致的 LCE 的形状变化行为与变色热致变色染料相结合,3D 热致变色 LCE 结构可以同时改变其形状和颜色,这分别由 LCE 的向列-各向同性转变温度和染料的临界变色温度控制。演示包括模拟花朵盛开过程、“蝴蝶”/“变色龙”机器人对环境变化的伪装行为以及“章鱼”机器人的水下伪装,突出了该策略的可靠性。此外,将微铁磁颗粒集成到“章鱼”热致变色 LCE 机器人中,使其能够对热磁双重刺激做出反应,实现“自适应”运动和多种仿生运动模式,包括游泳、滚动、旋转和爬行,同时伴随着变色行为进行伪装。这种可重构和变色的热致变色 LCE 结构有望应用于软伪装机器人和多功能仿生设备等领域。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验