Fabrication of Anodic Alumina Oxide Substrate for Nano-Structure Synthesis = Nano-Structure 합성을 위한 Anodic Alumina Oxide 기판 제작

다국어 초록 (Multilingual Abstract)

Nanotechnology has attracted great attention as an essential field in modern science and engineering. In particular, fabricating nanostructure and controlling their properties on the nanometer scales by top down approach, such as lithography (STM, AFM) are challenging. But the creation of nanostructures with good alignment and uniform size is even more difficult. These difficulties have compelled us to seek alternative approaches such as bottom up approach, template method, to produce uniform nanostructures on nanometer scale, and to form highly self‐ordered arrays.
Anodic aluminum oxide (AAO) template has a hexagonal array of pores which diameter can be easily controlled in the range of 25~200nm and pore to pore distance from 50 to 400nm. The surface state, anodizing voltage, anodizing time all have significant impact on the structure of AAO and these influential factors were carefully discussed. An AAO template has a barrier layer at the bottom of its pores. If we electrodeposit nanostructures into the pores of AAO, we have to solve this barrier layer, so we used chemical etching method and designed a modified substrate for electrodeposition and nanostructure synthesis.

목차 (Table of Contents)

• Abstract 1
• 요약문 2
• Contents 3
• List of Figures 4
• List of Tables 5
• I. Introduction 6
• II. Background 11
• 1. Formation Mechanism of AAO 11
• 1.1. Electro polishing 11
• 1.2. Pore formation mechanism 13
• 2. Self‐ordered porous alumina 16
• 2.1. Experimental Set up 17
• 2.2. Self‐ordered alumina by 2 step anodization 18
• 3. Influential Factors for AAO Formation 21
• III. Experiment 25
• 1. Fabrication of AAO template 25
• 2. Electrodeposition of Nanostructures Using AAO template 28
• 2.1. Barrier Layer Remove 28
• 2.2. DC electrodeposition of Metal Nanowire into AAO template 29
• IV. Conclusion and Future Work 34
• 1. Conclusion 34
• 2. Future Work 35
• Reference 36
• Acknowledgement 37