Durable artificial muscles based on hydrophobic and liquid-impermeable reduced graphene oxide paper electrodes = 소수성과 낮은 액체 투과율을 가지는 그래핀 페이퍼 전극 기반의 성능지속성이 좋은 인공근육형 액추에이터

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Ionic polymer actuators driven by electrical stimuli have been widely investigated for use in practical applications such as bio-inspired robots, sensors, and biomedical devices. However, conventional ionic polymer-metal composite actuators have a serious drawback of poor durability under long-term actuation in open air, mainly because of the leakage of the inner electrolyte and hydrated cations through cracks in the metallic electrodes. By employing crack-free, cost-effective, hydrophobic laser-scribed reduced graphene oxide paper electrodes, we developed a dry-type ionic polymer artificial musclewith outstanding durability and without leakage of the liquid electrolyte or mobile cations. The one-sided laser-scribed reduced graphene oxide paper has good flexibility, suitable for bendable artificial muscles, and a high electrical conductivity of 315 Socm-1, similar to the electrical conductivity of metallic electrodes such as platinum and gold. The water contact angles of the pure and laser-scribed reduced graphene oxide paper surface are as high as 88-89°, resulting in a unique artificial muscle that floats on water. The vapor/liquid impermeability of the laser-scribed reduced graphene oxide paper contributes to the durable performance of ionic polymer-graphene composite actuator because it prevents leakage of the vaporized or liquid electrolyte and mobile cations during actuation. The ionic polymer actuators which incorporate highly hydrophobic, flexible, cost-effective and conductive laser-scribed reduced graphene oxide paper electrodes, exhibit the durable actuation performance that is a prerequisite for their practical application in activebiomedical devices, biomimetic robots, and artificial muscles.
Advisors
Oh, Il-Kwonresearcher오일권
Description
한국과학기술원 : 해양시스템공학전공,
Publisher
한국과학기술원
Issue Date
2014
Identifier
569624/325007  / 020123144
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 해양시스템공학전공, 2014.2, [ vii, 51 p. ]

Keywords

laser-scribed reduced graphene oxide paper; 성능지속성; 이온성 고분자-그래핀 복합체 액츄에이터; 레이저 처리된 그래핀 페이퍼; cost-effective; liquid impermeability; actuator; durability; hydrophobicity

URI
http://hdl.handle.net/10203/197996
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=569624&flag=dissertation
Appears in Collection
OSE-Theses_Master(석사논문)
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