科研之友
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摘要
A method based on the study of the statistical characteristics of SERS signals is proposed to identify regimes in which most or the spectra are primarily single-molecule in nature. Once this regime is identified, the signals can be taken (with some statistical confidence) to represent single-molecule spectra and can be used to infer properties of the substrate (including its single-molecule SERS enhancement factor distribution) that would be otherwise washed out by ensemble-averaging. The method proposed here extends and complements the bianalyte SERS technique to situations in which a suitable "partner" molecule night be difficult to find or synthesize. Specific examples of the method are shown, and its advantages and limitations are discussed.
- 出版日期2010-4-29
