Laser-Scribed Graphene Oxide Electrodes for Soft Electroactive Devices

被引:11
作者
Kuhnel, Djen T. [1 ,2 ,3 ]
Rossiter, Jonathan M. [2 ,3 ,4 ]
Faul, Charl F. J. [5 ]
机构
[1] Univ Bristol, EPSRC Ctr Doctoral Training Future Autonomous & R, Bristol BS16 1QY, Avon, England
[2] Univ West England, Bristol BS16 1QY, Avon, England
[3] Univ Bristol, Bristol Robot Lab, Bristol BS16 1QY, Avon, England
[4] Univ Bristol, Dept Engn Math, Bristol BS8 1UB, Avon, England
[5] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England
来源
ADVANCED MATERIALS TECHNOLOGIES | 2019年 / 4卷 / 02期
基金
英国工程与自然科学研究理事会;
关键词
dielectric elastomer actuators; graphene oxide; laser scribing; soft electronics; stretchable conductors; DIELECTRIC ELASTOMER ACTUATORS; HIGH-PERFORMANCE; FABRICATION; REDUCTION; SKIN;
D O I
10.1002/admt.201800232
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Inherently soft electroactive devices will enable a range of novel applications in biomedical, wearable, and robotics technology. In this area, dielectric elastomers (DEs) are particularly promising electromechanical transducers. One major challenge for DEs and other soft devices is the fabrication and precise patterning of thin stretchable conductors. Conventional methods such as pad printing and spray deposition require prefabricated molds or stencils, and inkjet printing relies on organic solvents to tune the rheology of inks. Here, laser-scribed graphene oxide (LSGO) is proposed to fabricate patterned, stretchable electrodes for DE actuators (DEAs). The method uses a low-cost laser engraver that can produce arbitrary patterns with 0.1 mm resolution. The process is green (free of organic solvents) and does not require molds or stencils. DEAs with regular and complex LSGO electrodes are fabricated and characterized. In a direct comparison with DEAs made using conductive carbon grease as electrode material, LSGO DEAs show higher maximum actuation strain. Areal strain of 8.8% is observed in a planar LSGO DEA with patterned electrodes.
引用
收藏
页数:6
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