| 학회 | 한국재료학회 |
| 학술대회 | 2018년 봄 (05/16 ~ 05/18, 삼척 쏠비치 호텔&리조트) |
| 권호 | 24권 1호 |
| 발표분야 | G. 나노/박막 재료 분과 |
| 제목 | Study on massive and eco-friendly strategy for fabricating nanoporous anodic aluminum oxides and their applications |
| 초록 | Nanoporous anodic aluminum oxide (AAO), showing hexagonally distributed 1-dimensional (1D) nanopores with high aspect ratio, have been intensively studied in versatile fields of fundamental sciences as well as industries, for examples, hard templates for nanotubes(NTs)/nanowires(NWs), membrane filters, etch/evaporation masks, bio-sensors, and energy-related devices etc. However, conventional strategies for fabricating AAO exhibit critical disadvantages in terms of low production yield due to mono surface-based procedures, requirement of toxic chemicals, and inefficient usage of natural resources, which significantly limit their practical applications. In this presentation, we report on a novel strategy for massive and eco-friendly fabrication of nanoporous AAO through simultaneous multi-surface anodization (SMSA) followed by a couple of direct detaching methods of AAOs from an aluminum (Al) substrate; (i) applying stair-like reverse biases (SRB) in the same electrolyte used in the SMSA or (ii) dissolving sacrificial AAOs formed in highly concentrated sulfuric acid. Our novel strategy including SMSA and direct detachment were sequentially repeated on the same Al substrate for mass production of AAOs, which exhibited a regular diameter/length of nanopores, relatively long-range periodicity, and excellent reproducibility. As applications of the nanoporous AAOs fabricated here, π-conjugated polymer nanotubes and gold nanowires were synthesized and investigated with respect to their physical dimension. We also present capacitive humidity sensor by using nanoporous AAO as sensing and frame material. |
| 저자 | 홍영기1, 정석환1, 김선국1, 박동혁2 |
| 소속 | 1성균관대, 2인하대 |
| 키워드 | Simultaneous Multi-Surfaces Anodization; Direct Detachment; Anodic aluminum Oxide; Nanoporous Template; Capacitive Humidity Sensor |
