A simple and versatile method for fabricating surface-enhanced Raman scattering (SERS) active substrate with high uniformity, structural controllability, high sensitivity and great stability is reported. The ordered aluminum template formed during the synthesis of anodic aluminum oxide (AAO) film was used as the
concaved matrix. Au nanocap arrays as SERS active substrates were prepared through thermally evaporation. Taking Rhodamine 6G (R6G) as probing molecules, SERS spectra were investigated. The results indicates that these SERS active substrates displayed very strong SERS performances (Raman enhancement factor >1×107). Comparing with the ordinary Au film, the SERS enhancement effect of the Au nanocap array is about seven times stronger at 1 363 cm−1. A 6-month-old sample almost kept the same SERS activity with the newly prepared sample. Such ordered Au nanocap arrays allows application in the detection of chemical and biological molecules with trace amounts.
ZHOU Yi, FU Qun, WANG Sha-sha, ZHANG Hong-chao, LEI Bo, LEI Yong, WU Ming-hong
. Controlled Fabrication of Highly Ordered Au Nanoarrays as SERS Active Substrates[J]. Journal of Shanghai University, 2013
, 19(5)
: 479
-484
.
DOI: 10.3969/j.issn.1007-2861.2013.05.008
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