Programmable self-locking micromachines with tunable couplings
Programmable self-locking micromachines with tunable couplings
复制标题
带有可调联轴器的可编程自锁微机械
DOI：
10.1002/aisy.202000232
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发表时间：
2021
影响因子：
7.4
通讯作者：
Huiling Duan
中科院分区：
文献类型：
--
作者：
Qianying Chen;Tian-Yun Huang;Pengyu Lv;Jianyong Huang;Huiling Duan
通过调整结构配置和物理特性在复杂微环境中执行任务的智能微机器在许多领域提供了巨大的潜力，包括精密医学，微流体通道，微操作和生物工程。智能材料和4D微打印的最新进展为通过设计和组装可预测的3D到3D形状变形部件来制造复合微机械提供了可行的策略。然而，这些组件的形状转换只能由外部刺激同时触发，它们之间的有序触发还不能实现执行更有效的动作的预期目的。在此，提出了一种新的顺序触发策略，用于开发由多个可重构组件组成的智能微机器，这些组件相互交互工作。此外，还可实现具有可调耦合机构的自锁微机械，该耦合机构可协调部件之间的精确时序变形。基于有限元分析（FEA）辅助设计，对三种类型的锁紧联轴器进行了调整。所提出的方法为创建下一代智能微机器提供了一种有效的策略，这些智能微机器可以改变形状以适应复杂情况并完成多项任务。
Intelligent micromachines that perform tasks in complex microenvironments by adjusting structural configurations and physical properties offer substantial potential for use in many fields, including precision medicine, microfluidic channels, micromanipulations, and bioengineering. Recent progress in smart materials and 4D microprinting provides a feasible strategy for fabricating compound micromachines by designing and assembling predictable 3D‐to‐3D shape‐morphing components. However, shape transformations of these components can only be triggered simultaneously by external stimuli, and orderly triggering among them cannot be achieved yet for an intended purpose of performing more efficient actions. Herein, a novel sequentially triggered strategy is proposed for developing intelligent micromachines that consist of multiple reconfigurable components that work interactively with each other. Furthermore, self‐locking micromachines with tunable coupling mechanisms that coordinate accurate time‐sequence deformations among components are achieved. Three types of locking couplings are modulated based on finite‐element analysis (FEA)‐aided design. The proposed method provides an effective strategy to create next‐generation intelligent micromachines that can change their shapes to adapt to complex situations and complete multiple tasks.