摘要
为了得到能够可控制形变的液晶弹性体,提高其在软体致动器和软体机器人领域的应用潜力,本文报道了一种基于液态金属(LM)-液晶弹性体(LCE)的光驱动软体致动器。该软体致动器通过4D打印技术制备而成,展现出了良好的形变可编程性。通过超声将LM分散在乙醇中,随后将LM微米颗粒混合到配置好的液晶溶液中得到均匀的LM-LCE墨水,利用4D打印技术对其墨水的取向结构进行编程,最终制备出具有特定形变的软体致动器。通过4D打印,分别制备了具有交替正交和圆锥形阵列取向结构的LM-LCE软体致动器。该致动器具有良好的光热性能,在808 nm红外激光照射下,在10 s内致动器表面温度可达120℃。基于优越的光热性能,交替正交取向结构的致动器可以快速产生弯曲形变;而圆锥形阵列取向结构的致动器则以螺旋中心为顶点产生凸起形变。基于4D打印技术,LM-LCE的光驱动软体致动器具有良好的形状可编程性,在动态和复杂的环境中展现出更加优异的适应性及可调节性,有望在医疗、军事和软体机器人领域得到广泛应用。
To obtain liquid crystal elastomer with shape-programmable ability and improve its application potential in soft actuators and soft robots,this work reports a light driven soft actuator based on liquid metal(LM)-liquid crystal elastomer(LCE).The soft actuator is fabricated by 4D printing technology,which endows the actuator robust shape-programmable capability.LM was dispersed in ethanol by sonication,then LM micro-particles were mixed into the liquid crystal solution to obtain uniform LM-LCE ink.Using 4D printing technique,the soft actuator with specific deformation was eventually obtained by further programming the orientation of ink.The alternating orthogonal and conical array LM-LCE soft actuators were created via 4D printing.The actuator has good photothermal performance,when exposed to 808 nm infrared laser,its surface temperature can reach above 120°C in about 10 s.According to the superior photothermal performance,the alternating orthogonal structure actuator is capable of producing bending deformation quickly,while the conical array structure actuator can produce a convex deformation with the spiral center as the vertex.Based on 4D printing technology,the LM-LCE light-driven soft actuator has robust shape-programmable capability,demonstrating better adaptability and adjustability in dynamic and complex environments,and is anticipated to be extensively used in the fields of medical treatment,military,and soft robot.
作者
王发欣
张欢
陈原浩
杨乐
毕然
沈永涛
封伟
王玲
WANG Faxin;ZHANG Huan;CHEN Yuanhao;YANG Le;BI Ran;SHEN Yongtao;FENG Wei;WANG Ling(School of Materials Science and Engineering,Tianjin University,Tianjin 300350,China;Binhai Industrial Research Institute,Tianjin University,Tianjin 300452,China)
出处
《液晶与显示》
CAS
CSCD
北大核心
2024年第3期257-265,共9页
Chinese Journal of Liquid Crystals and Displays
基金
国家自然科学基金(No.51973155,No.52173181)
天津市杰出青年科学基金(No.22JCJQJC00060)。
关键词
可编程形变
液晶弹性体
液态金属
4D打印
软体机器人
programmable deformation
liquid crystal elastomer
liquid metals
4D printing
soft robot
