Microtentacle Actuators Based on Shape Memory Alloy Smart Soft Composite
Microtentacle Actuators Based on Shape Memory Alloy Smart Soft Composite
复制标题
基于形状记忆合金智能软复合材料的微触手执行器
作者：
Hyun‐Taek Lee;F. Seichepine;Guang
微型机器人技术的最新进展通过利用软材料、新制造方案和连续驱动的最新发展，带来了性能上的有希望的改进。此类设备可用于需要精细操作的应用，例如显微手术或小规模生物样品的研究。某些合金的形状记忆效应由于其高的工作密度和简单的驱动机制，在小尺度下是有希望的驱动机制之一。然而，对于亚毫米器件，由于制造工艺的限制，形状记忆合金致动器难以实现复杂的大位移。本文提出了一种利用双光子聚合制备小型化智能软复合致动器的方案。通过改变支架层压的方向来改变变形模式。此外，通过沉积在致动器内部的碳纳米管层的局部电阻加热来控制致动。所提出的设计可以产生390 µN的力，并实现高达80°的弯曲角度。通过用单指和双指装置抓取小而精致的物体来证明致动器的应用。
Recent advances in miniature robotics have brought promising improvements in performance by leveraging the latest developments in soft materials, new fabrication schemes, and continuum actuation. Such devices can be used for applications that need delicate manipulation such as microsurgery or investigation of small‐scale biological samples. The shape memory effect of certain alloys is one of the promising actuation mechanisms at small scales because of its high work density and simple actuation mechanism. However, for sub‐millimeter devices, it is difficult to achieve complex and large displacement with shape memory alloy actuators because of the limitation in the fabrication process. Herein, a fabrication scheme for miniaturized smart soft composite actuator is proposed by utilizing two‐photon polymerization. The morphing modes are varied by changing the direction of the scaffold lamination. In addition, the actuation is controlled via local resistive heating of a carbon nanotube layer deposited inside of the actuators. The proposed design can generate a 390 µN force and achieve a bending angle up to 80°. Applications of the actuators are demonstrated by grasping small and delicate objects with single and two finger devices.
影响因子：
35
作者：
Gissibl, Timo;Thiele, Simon;Giessen, Harald
通讯作者：
Giessen, Harald
影响因子：
19
作者：
Hamedi, Mahiar M.;Campbell, Victoria E.;Whitesides, George M.
通讯作者：
Whitesides, George M.
影响因子：
13.6
作者：
Thiele S;Arzenbacher K;Gissibl T;Giessen H;Herkommer AM
通讯作者：
Herkommer AM