期刊
CHEMICAL PHYSICS LETTERS
卷 375, 期 1-2, 页码 84-90出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0009-2614(03)00821-2
关键词
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We show the possibility of chemical tracing in solution down to a concentration of a fraction of an atto mol (10(-18)) by means of non-resonant surface enhanced Raman scattering (SERS). The experiments are demonstrated with rhodamine 6G dissolved in water. Based on our results here, we propose a technique for counting a small number of SERS active molecules in micro-droplets of liquid. It is argued that, by choosing the appropriate SERS enhancement condition, the technique could be used and implemented as a routine analytical method with unprecedented detection capabilities for the monitoring and tracing of important families of biomolecules. (C) 2003 Elsevier Science B.V. All rights reserved.
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