期刊
CHEMICAL PHYSICS LETTERS
卷 511, 期 4-6, 页码 309-314出版社
ELSEVIER
DOI: 10.1016/j.cplett.2011.06.039
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资金
- UGC-New Delhi
- DST [SR/WOS-A/PS-06/2009, SR/S2/CMP-0054]
- CSIR, India
Highly reproducible, active and stable SERS substrates were prepared by a nanocluster deposition system. SERS studies were carried out on these substrates with R6G as a test molecule using near Raman resonant and off resonant laser excitation wavelengths. Our results show that Ag nanoclusters of average particle size of ( 157 +/- 119) nm act as very good SERS substrates for the ultra trace detection of R6G with an AEF of 2 x 10(12) corresponding to a detection limit of 10(-16) M. The present substrates could improve the detection limit of R6G by two orders of magnitude as compared to the previous reports. (C) 2011 Elsevier B.V. All rights reserved.
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