当前位置: X-MOL 学术Adv. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Unconstrained 3D Shape Programming with Light-Induced Stress Gradient
Advanced Materials ( IF 29.4 ) Pub Date : 2021-09-02 , DOI: 10.1002/adma.202105194
Cheng Liu 1 , Yizheng Tan 1 , Chaowei He 1 , Shaobo Ji 2 , Huaping Xu 1
Affiliation  

Programming 2D sheets to form 3D shapes is significant for flexible electronics, soft robots, and biomedical devices. Stress regulation is one of the most used methods, during which external force is usually needed to keep the stress, leading to complex processing setups. Here, by introducing dynamic diselenide bonds into shape-memory materials, unconstrained shape programming with light is achieved. The material could hold and release internal stress by themselves through the shape-memory effect, simplifying programming setups. The fixed stress could be relaxed by light to form stress gradients, leading to out-of-plane deformations through asymmetric contractions. Benefiting from the variability of light irradiation, complex 3D configurations can be obtained conveniently from 2D polymer sheets. Besides, remotely controlled “4D assembly” and actuation, including object transportation and self-lifting, can be achieved by sequential deformation. Taking advantage of the high spatial resolution of light, this material can also produce 3D microscopic patterns. The light-induced stress gradients significantly simplify 3D shape programming procedures with improved resolution and complexity and have great potential in soft robots, smart actuators, and anti-counterfeiting techniques.

中文翻译:

具有光致应力梯度的无约束 3D 形状编程

对 2D 片材进行编程以形成 3D 形状对于柔性电子产品、软机器人和生物医学设备具有重要意义。应力调节是最常用的方法之一,在此期间通常需要外力来保持应力,从而导致复杂的加工设置。在这里,通过将动态二硒化物键引入形状记忆材料,实现了无约束的光形状编程。该材料可以通过形状记忆效应自行保持和释放内应力,从而简化编程设置。固定应力可以通过光松弛以形成应力梯度,通过不对称收缩导致平面外变形。受益于光照射的可变性,可以从 2D 聚合物片中方便地获得复杂的 3D 配置。除了,远程控制的“4D组装”和驱动,包括物体运输和自提升,可以通过顺序变形来实现。利用光的高空间分辨率,这种材料还可以产生 3D 微观图案。光致应力梯度显着简化了 3D 形状编程程序,提高了分辨率和复杂性,在软机器人、智能执行器和防伪技术方面具有巨大潜力。
更新日期:2021-10-20
down
wechat
bug