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Flexible and Transparent Ultrathin Gold Microelectrode Array for Electro-Optical Neural Interface

Title
Flexible and Transparent Ultrathin Gold Microelectrode Array for Electro-Optical Neural Interface
Translated Title
전기광학형 신경 인터페이스를 위한 플렉서블 투명 얇은 금 박막 미세전극 어레이
Authors
Woongki Hong
DGIST Authors
Woongki Hong; Hongki KangHyuk-Jun Kwon
Advisor(s)
강홍기
Co-Advisor(s)
Hyuk-Jun Kwon
Issue Date
2021
Available Date
2022-07-07
Degree Date
2021/02
Type
Thesis
Keywords
Flexible and Transparent electronics, Ultrathin Metal Nanofilm, Microelectrode Array, Electrophysiological Recording, Electro-Optical Neural Interface, 플렉서블 투명 전극, 얇은 금 박막 나노필름, 미세전극 어레이, 전기생리학적 레코딩, 전기 광학적 인터페이스
Table Of Contents
1. INTRODUCTION 1 1.1. Motivation 1 1.2. Neural Signal Interface 1 1.2.1. Invasive Neural Interface 2 1.2.2. Non-Invasive Neural Interface 2 1.3. Electrochemical Measurement 3 1.3.1. Electrochemical Impedance Spectroscopy 3 1.3.2. Two Electrode System 4 1.3.3. Double Layer Capacitance 5 1.3.4. Nyquist Plot 6 1.4. Flexible and Transparent Electronics 7 1.4.1. Conventional Flexible and Transparent Electrode 7 1.4.2. Ultrathin Metal Nanofilm 8 1.4.3. Layer-by-Layer coated Polyelectrolytes 9 1.4.4. Flexible Substrates 10 2. EXPERIMENTAL METHOD 11 2.1. Device Structure and Fabrication 11 2.1.1. Layer-by-Layer Polyelectrolytes Characterization 12 2.1.2. Ultrathin Gold Microelectrode Array 12 2.1.3. Bulk Gold Microelectrode Array 13 2.2. Electro-Optical Characterization 14 2.3. Mechanical Flexibility Test 15 2.4. Electrochemical Measurement 15 2.4.1. Modeling of Electrochemical Measurement 15 2.4.2. Experimental Setup 16 2.5. Biocompatibility Test 17 2.6. Simulation modeling of in vivo photothermal stimulation using thermo-plasmonic optical fiber 18 3. RESULT & DISCUSSION 20 3.1. Material Characteristics of Ultrathin Gold Microelectrode Array 20 3.2. Electrical and Optical Characteristics of Ultrathin Gold Microelectrodes 23 3.2.1. Optical Characteristics of Ultrathin Gold Electrode 23 3.2.2. Electrical Characteristics of Ultrathin Gold Microelectrode on Flexible Substrate 24 3.2.3. Mechanical Flexibility on Ultrathin Gold Microelectrodes 29 3.3. Electrochemical Impedance Spectroscopy (EIS) 29 3.4. Electrophysiological Measurements 34 3.4.1. Biocompatibility Test 34 3.4.2. RMS Noise 35 3.5. COMSOL Simulation 36 4. CONCLUSION 38 5. APPREDIX 39 A1. MATLAB Source Code for Power Spectrum Density (PSD) 39 A2. Electrochemical Impedance Measurement 40 A3. EIS spectrum Analysis 41 A4. Electrophysiological Measurements 42 A5. COMSOL Simulation Software 43
URI
http://dgist.dcollection.net/common/orgView/200000362719
http://hdl.handle.net/20.500.11750/16666
DOI
10.22677/thesis.200000362719
Degree
Master
Department
Information and Communication Engineering
University
DGIST
Related Researcher
  • Author Kwon, Hyuk-Jun Advanced Electronic Devices Research Group(AEDRG) - Kwon Lab.
  • Research Interests
Files:
There are no files associated with this item.
Collection:
Department of Electrical Engineering and Computer ScienceThesesMaster


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