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    题名: Electro-optical modulation for a boron nitride nanotube probed by first-principles calculations
    作者: Chen, Chun-Wei;Lee, Ming-Hsien;Lin, Yu-Ting
    贡献者: 淡江大學物理學系
    关键词: Engineering uncontrolled terms: Blueshift;Energy shift;Quantum confinement;Surface resonance
    日期: 2006-11
    上传时间: 2013-05-31 11:32:18 (UTC+8)
    出版者: College Park: American Institute of Physics
    摘要: The electro-optical modulation effect of a (10,0) boron nitride nanotube is investigated by first-principles, density functional theory calculations. The optical properties of boron nitride nanotubes can be tuned through perturbation by a transverse electric field. Large optical anisotropy in variations of the absorption spectra and refractive indices in response to external electric field is found. In addition, a method called the band-resolved absorption density analysis technique is developed to investigate the detailed optical absorption transition processes. The result is consistent with the recent experimental observation [ M. Ishigami et al., Phys. Rev. Lett. 94, 56804 (2005) ] and suggests that the boron nitride nanotubes can be a promising material for electro-optical modulation device applications.
    關聯: Applied Physics Letters 89(22), 223105(3pages)
    DOI: 10.1063/1.2370561
    显示于类别:[物理學系暨研究所] 期刊論文


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