Electro-optical modulation for a boron nitride nanotube probed by first-principles calculations

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題名:	Electro-optical modulation for a boron nitride nanotube probed by first-principles calculations
作者:	Chen, Chun-Wei;Lee, Ming-Hsien;Lin, Yu-Ting
貢獻者:	淡江大學物理學系
關鍵詞:	Electric fields;Carbon nanotubes;Electrooptical effects;Absorption spectra;Optical absorption
日期:	2006-11-27
上傳時間:	2009-12-31 10:36:07 (UTC+8)
出版者:	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), p.223105
DOI:	10.1063/1.2370561
顯示於類別:	[物理學系暨研究所] 期刊論文

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