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Highly Sensitive and Stretchable Multi-dimensional Strain Sensor with Pre-strained Anisotropic Metal Nanowire Percolation Networks : 금속 나노와이어의 이방성 패턴을 이용한 유연 다차원 스트레인 센서 개발
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- Authors
- Advisor
- 고승환
- Major
- 공과대학 기계항공공학부
- Issue Date
- 2016-02
- Publisher
- 서울대학교 대학원
- Keywords
- 다차원 스트레인 센서 ; 나노와이어 퍼콜레이션 네트워크 ; 유연전자소자 ; 이방성 저항 변화
- Description
- 학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부 기계공학전공, 2016. 2. 고승환.
- Abstract
- Novel designs for flexible strain-gauge sensors have been widely reported, yet remained unsuccessful in distinguishing complex characteristics of the multi-dimensional strain. Here, to overcome the limitation of the conventional single axis-strain sensor, we demonstrate a multi-dimensional strain sensor composed of two layers of pre-strained silver nanowire percolation network with decoupled and polarized electrical response in principal and perpendicular directional strain. The information on the magnitude and effective direction of surface strain are successfully calculated up to 35 % maximum strain. At the same time, the fabricated multi-dimensional sensor exhibits a markedly large gauge factor (>20) at excellent agreement with a model predicted by 3D percolation theory. The potential of the proposed sensor as a versatile wearable device has been further confirmed through its implementation as a large-area multi pixel strain sensor array on a human hand and a remote controller for an artificial 3D simulation model.
- Language
- English
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