کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5423372 1507955 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tip enhanced Raman spectroscopy evidence for amorphous carbon contamination on gold surfaces
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Tip enhanced Raman spectroscopy evidence for amorphous carbon contamination on gold surfaces
چکیده انگلیسی
We show that the origin of the spectral fluctuations frequently observed in tip enhanced Raman spectroscopy (TERS) experiments can be mainly related to the presence of surface-contaminating amorphous carbon-based species. We have monitored the spectral fluctuations originating from the sharp metallic tips used as apertureless near field probes, as well as from commonly used noble metal substrates. A correlation between the tip surface roughness and the carbon-based spectral fluctuations has been revealed. An Au-(1 1 1) bare substrate has been mapped with sub-wavelength resolution by TERS, evidencing the localization of the carbon contaminants on the surface steps and grain boundaries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 604, Issues 7–8, 15 April 2010, Pages 701-705
نویسندگان
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