期刊
APPLIED PHYSICS LETTERS
卷 103, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4816344
关键词
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资金
- National Basic Research Program of China [2009CB939704]
- NSFC [11005082, 11004052, 91026014, 11175133, 51171132, U1260102]
- Foundations from Chinese Ministry of Education [311003, 20100141120042, 20110141130004]
- NCET [12-0418]
- Fundamental Research Funds for the Central Universities [2012202020208, T201220203]
- Hubei Provincial Natural Science Foundation [2011CDB270, 2012FFA042]
We report the fabrication of large-area, well-ordered, uniform-sized noble metal bowtie nanoantenna arrays used as an ultra-sensitive surface-enhanced Raman scattering (SERS) substrate by a refined combination of colloid lithography and subsequent oxygen plasma processing. The tip-to-tip distance between neighboring nanotriangles is made as small as 10 nm by accurately controlling the etching time. Owing to the nanoscale property, the as-fabricated Ag bowtie nanoantenna arrays exhibit a local SERS enhancement larger than 10(7). The experimental results were confirmed by theoretical calculations. (C) 2013 AIP Publishing LLC.
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