期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 3, 期 9, 页码 1176-1181出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz300361g
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资金
- CNRS through the PICS [4917]
- Institut Universitaire de France
Optical detection of an individual single nano-object on an opaque substrate and direct determination of its absorption cross section is demonstrated using reflective spatial modulation spectroscopy. This method is applied to optical imaging and investigation of individual single-wall carbon nanotubes in the 1.6 nm diameter range on silicon substrates, which are also individually characterized by atomic force microscopy, scanning electron microscopy, and in situ micro-Raman spectroscopy. Absorption cross sections on the order of 10(-17) cm(2) per carbon atom are measured for the investigated semiconducting carbon nanotubes, with a light polarization absorption anisotropy of about 2.
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