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논문 기본 정보

자료유형
학위논문
저자정보

김권규 (서울대학교, 서울대학교 대학원)

지도교수
고승환
발행연도
2016
저작권
서울대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (2)

초록· 키워드

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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.

목차

Chapter 1. Introduction 6
1.1. Study Background 6
1.2. Purpose of Research 8
Chapter 2. Fabrication 9
2.1. Fabrication of the Strain Sensor 9
2.2. Material 13
Chapter 3. Result 14
3.1. Pre-strained AgNW 14
3.2. Calculation of resistance through 3D percolation theory 18
3.3. Monte-Carlo simulation of resistance through 3D percolation theory 20
3.4. Off-axis strain detection of multi-dimensional strain sensor 22
3.5. Calculation of the effective strain for off-axis deformation 24
3.6. Cyclic response of the strain sensor 26
3.7. Multi-pixel strain sensor fabrication 28
3.8. Applications of multi-dimensional strain sensor 30
Chapter 4. Summary 33
References 34
국문 초록 37

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