Fabrication and Analysis of Reversible Interlocking System between Multiscale Line Arrays : 고분자 기반 멀티스케일 라인 구조물의 제작 및 가역적 상호체결현상 분석

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dc.description학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부(멀티스케일 기계설계전공), 2014. 2. 최만수.-
dc.description.abstractInspired from microstructure-based reversible fastening mechanisms in biological system, a number of researches have been conducted to elucidate the principle of adhesion and to mimic its function. Structures with high aspect ratio have been desirably used to maximize van der Waals force, though the weakness of the structures has been one of the major huddles for practical use. Here, instead of high aspect ratio structures which are vulnerable to mechanical failure, the interlocking between arrays of regularly protruded line structures is introduced to provide remarkable repeatability while maintaining substantial adhesion force. Mechanical interlocking between line arrays made by UV-curable material is mediated by van der Waals interaction when two surfaces are brought into contact. By optimizing the geometry and material, failure-free working condition is established and maximum measured adhesion force is recorded about ~ 29.6 N/cm2 without any degradation in adhesion force during repeatable attachment. To analyze the adhesion characteristics, a theoretical model is established using Timoshenko beam bending theory and van der Waals interaction between two surfaces with nanoscale roughness.-
dc.description.tableofcontentsAbstract i
Nomenclature iii
List of Figures iv

1. Introduction 1

2. Experimental Results 4
2.1. Fabrication of PUA line arrays 5
2.2. Adhesion measurements 6
2.3. Repeatability test 9

3. Analysis 11
3.1. Beam deflection analysis 12
3.2. Van der Waals force analysis and combined modeling 14

4. Conclusion 17

Experimental Section 19
Figures 21
References 29
Abstract (Korean) 33
dc.format.extent1224652 bytes-
dc.publisher서울대학교 대학원-
dc.subjectreversible interlocking-
dc.subjectline array structure-
dc.subjectdry adhesive-
dc.subjectvan der Waals force-
dc.titleFabrication and Analysis of Reversible Interlocking System between Multiscale Line Arrays-
dc.title.alternative고분자 기반 멀티스케일 라인 구조물의 제작 및 가역적 상호체결현상 분석-
dc.contributor.AlternativeAuthorLee Chanseok-
dc.citation.pagesv, 33-
dc.contributor.affiliation공과대학 기계항공공학부(멀티스케일 기계설계전공)-
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Theses (Master's Degree_기계항공공학부)
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