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Laser-Scribed Graphene Oxide Electrodes for Soft Electroactive Devices

Research output: Contribution to journalArticle

Original languageEnglish
Article number1800232
JournalAdvanced Materials Technologies
Early online date6 Dec 2018
DOIs
DateAccepted/In press - 27 Nov 2018
DateE-pub ahead of print (current) - 6 Dec 2018

Abstract

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 pre-fabricated molds or stencils, and inkjet printing relies on organic solvents to tune the rheology of inks. In this work, 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.l mm resolution. The process is green (free of organic solvents) and does not require molds or stencils. DEAs with regular and complex LSGO electrodes were 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% was observed in a planar LSGO DEA with patterned electrodes.

    Research areas

  • dielectric elastomer actuators, soft electronics, laser scribing, graphene oxide, stretchable conductors

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Documents

  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Wiley at https://onlinelibrary.wiley.com/doi/abs/10.1002/admt.201800232 . Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 496 KB, PDF document

    Embargo ends: 6/12/19

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