期刊
NANOSCALE RESEARCH LETTERS
卷 8, 期 -, 页码 -出版社
SPRINGER
DOI: 10.1186/1556-276X-8-268
关键词
Large-pitch anodic alumina membranes; Programmable nanoengineering templates; Nanocones; Three-dimensional nanophotonic structures
资金
- Hong Kong Innovation Technology Commission [ITS/192/11]
- HKUST Research Project Competition Grant [RPC11EG38]
- General Research Fund from Hong Kong Research Grant Council [612111]
- National Research Foundation of Korea
- Korean Government [NRF-2010-220-D00060, 2008-0662256]
Porous anodic alumina membranes (AAMs) have attracted great amount of attention due to their potential application as templates for nanoengineering. Template-guided fabrication and assembly of nanomaterials based on AAMs are cost-effective and scalable methods to program and engineer the shape and morphology of nanostructures and nanomaterials. In this work, perfectly ordered AAMs with the record large pitch up to 3 mu m have been fabricated by properly controlling the anodization conditions and utilization of nanoimprint technique. Due to the capability of programmable structural design and fabrication, a variety of nanostructures, including nanopillar arrays, nanotower arrays, and nanocone arrays, have been successfully fabricated using nanoengineered AAM templates. Particularly, amorphous Si nanocones have been fabricated as three-dimensional nanophotonic structures with the characterization of their intriguing optical anti-reflection property. These results directly indicate the potential application of the reported approach for photonics and optoelectronics.
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