Subdiffraction far-field imaging of luminescent single-walled carbon nanotubes.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 18232720.
- Also identified by DOI 10.1021/nl0725300.
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Abstract
Far-field near-infrared fluorescence microscopy of single-walled carbon nanotubes (SWNTs) has been hampered by the diffraction limit to resolution. A new analysis method is presented that allows subwavelength (<lambda/10) mapping of single-molecule chemical reaction sites on semiconducting SWNTs, enabling precise localization of excitonic luminescence regions along the nanotube axis through a nonperturbing, far-field optical measurement. This method is applied to reveal the subdiffraction lengths, curvatures, and defects of luminescent SWNTs in unprecedented detail.
Medical subject headings
- Luminescent Measurements
- Materials Testing
- Nanostructures
- Nanotechnology
- Refractometry