Title

Bionic Engineering for Conformal Surfaces: Subretinal Electrodes and Shape-Morphing Structures

Alternative Title

곡면 적합형 생체 공학: 망막 하 전극 및 형상 가변 구조

DGIST Authors

Namju Kim ; Sohee Kim ; Hongki Kang

Advisor

김소희

Co-Advisor(s)

Hongki Kang

Issued Date

2026

Awarded Date

2026-02-01

Type

Thesis

Description

Biomedical Engineering, Mechanical Conformity, Microelectrode Array, Retinal Prosthesis, Strain-limiting Elements, Inflatable Structures, Soft Robotics, FDM 3D Printing

Table Of Contents

Chapter Ⅰ. Background 1
1. Mechanical conformity in biomedical devices 2
2. Manufacturing techniques of biomedical devices 3
3. Research Objectives 4
Chapter ⅠⅠ. Subretinal Electrodes with Controlled Roundness and Aspect Ratio for Improved Retinal Conformity 5
1. Introduction 6
2. Methods 8
2.1 Fabrication 8
2.2 Electrochemical characterization 16
2.3 Biocompatibility test 18
2.4 In vitro stimulation 19
3. Results and discussion 22
3.1 Fabrication 22
3.2 Electrochemical characterization 28
3.3 Biocompatibility test 31
3.4 In vitro stimulation 33
4. Conclusion 36
Chapter ⅠⅠⅠ. Engineering Stretchability Using Strain-Limiting Elements: Simulation, Fabrication, and Optimization 37
1. Introduction 38
2. Simulation 42
2.1 Background 42
2.2 Idealization of strain-limiting element as bilinear 1D spring 44
2.3 Solver 47
2.4 Evaluation 51
3. Fabrication 53
3.1 Development of strain-limiting elements with controlled onset length 53
3.2 Programming stretchability via transverse drawing of 3D printed fibers 61
4. Optimization 72
4.1 Sizing optimization to find optimal number of strands 72
5. Conclusion 77
Chapter Ⅳ. Conclusion 79
1. Conclusion 80
2. Future research 81
References 82

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/59606
http://dgist.dcollection.net/common/orgView/200000951714

DOI

10.22677/THESIS.200000951714

Degree

Doctor

Department

Department of Robotics and Mechatronics Engineering

Publisher

DGIST

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