Melt electrowriting enabled 3D liquid crystal elastomer structures for cross-scale actuators and temperature field sensors

被引：14

作者：

Feng, Xueming ^{[1
,2
]}

Wang, Li ^{[1
,2
,4
]}

Xue, Zhengjie ^{[1
,2
]}

Xie, Chao ^{[1
,2
]}

Han, Jie ^{[1
,2
,3
]}

Pei, Yuechen ^{[1
,2
]}

Zhang, Zhaofa ^{[1
,2
]}

Guo, Wenhua ^{[1
,2
,4
]}

Lu, Bingheng ^{[1
,2
,4
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710054, Peoples R China

[3] Max Planck Inst Intelligent Syst, Phys Intelligence Dept, D-70569 Stuttgart, Germany

[4] Natl Innovat Inst Addit Mfg, 997 Shanglinyuan 8th Rd, Xian 710300, Peoples R China

来源：

SCIENCE ADVANCES | 2024年 / 10卷 / 10期

基金：

中国国家自然科学基金;

关键词：

JET;

D O I：

10.1126/sciadv.adk3854

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Liquid crystal elastomers (LCEs) have garnered attention for their remarkable reversible strains under various stimuli. Early studies on LCEs mainly focused on basic dimensional changes in macrostructures or quasi-three-dimensional (3D) microstructures. However, fabricating complex 3D microstructures and cross-scale LCE-based structures has remained challenging. In this study, we report a compatible method named melt electrowriting (MEW) to fabricate LCE-based microfiber actuators and various 3D actuators on the micrometer to centimeter scales. By controlling printing parameters, these actuators were fabricated with high resolutions (4.5 to 60 mu m), actuation strains (10 to 55%), and a maximum work density of 160 J/kg. In addition, through the integration of a deep learning-based model, we demonstrated the application of LCE materials in temperature field sensing. Large-scale, real-time, LCE grid-based spatial temperature field sensors have been designed, exhibiting a low response time of less than 42 ms and a high precision of 94.79%.

引用

页数：15