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Start Over Author "Lv, Shun" Journal applied physics letters
3 results on '"Lv, Shun"'

2. Lack of dependence of the Raman frequency of optical vibrational modes on excitation wavelength in polar nanosemiconductors

Author

Yang Song, Jing Chen, Jun Zhao, Yan Yan, Lv-Shun Xu, Hong-Dong Li, Yadong Li, Min Gao, Zhengdong Fu, Wei Liu, Songnan Wu, Yanbin Zhang, Shu-Lin Zhang, Rui Ma, and Fangli Yuan

Subjects
Physics::Biological Physics, Quantitative Biology::Biomolecules, Materials science, Physics and Astronomy (miscellaneous), Scattering, Analytical chemistry, Carbon nanotube, Molecular physics, Nanomaterials, law.invention, Amorphous solid, Condensed Matter::Materials Science, symbols.namesake, law, Molecular vibration, symbols, Polar, Coherent anti-Stokes Raman spectroscopy, Raman spectroscopy
Abstract

A lack of dependence of the Raman frequency of optical vibrational modes on excitation wavelength in polar nanosemiconductors was observed. This is in contrast to the earlier observed dependence in nonpolar nanomaterials: carbon nanotubes and Si nanowires. This difference has been ascribed to the different crystallographic natures of their Raman spectra: crystalline for nonpolar and amorphous for polar nanosemiconductors. The result has been explored theoretically to the Raman spectra being insensitive to sample sizes and thus indicates that the size confinement effect, a basic effect in nanomaterials, does not exhibit in the optical vibrational modes of polar nanosemiconductors.

Published
2006

3. Lack of dependence of the Raman frequency of optical vibrational modes on excitation wavelength in polar nanosemiconductors.

Author

Shu-Lin Zhang, Yanbin Zhang, Wei Liu, Zhengdong Fu, Yan Yan, Jing Chen, Rui Ma, Yang Song, Jun Zhao, Lv-Shun Xu, Songnan Wu, Min Gao, Hongdong Li, Yadong Li, and Fangli Yuan

Subjects
OPTICS, RAMAN effect, SPECTRUM analysis, NANOTUBES, FULLERENES, SEMICONDUCTORS
Abstract

A lack of dependence of the Raman frequency of optical vibrational modes on excitation wavelength in polar nanosemiconductors was observed. This is in contrast to the earlier observed dependence in nonpolar nanomaterials: carbon nanotubes and Si nanowires. This difference has been ascribed to the different crystallographic natures of their Raman spectra: crystalline for nonpolar and amorphous for polar nanosemiconductors. The result has been explored theoretically to the Raman spectra being insensitive to sample sizes and thus indicates that the size confinement effect, a basic effect in nanomaterials, does not exhibit in the optical vibrational modes of polar nanosemiconductors. [ABSTRACT FROM AUTHOR]

Published
2006
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