Chen, Chun-WeiChun-WeiChenLee, Ming-HsienMing-HsienLeeLin, Yu-TingYu-TingLin2008-12-312018-06-282008-12-312018-06-28200600036951http://ntur.lib.ntu.edu.tw//handle/246246/95592https://www.scopus.com/inward/record.uri?eid=2-s2.0-33751555051&doi=10.1063%2f1.2370561&partnerID=40&md5=194aa21d44806b172776e6ed67ed452bThe 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, Phys. Rev. Lett. 94, 56804 (2005)] and suggests that the boron nitride nanotubes can be a promising material for electro-optical modulation device applications. © 2006 American Institute of Physics.application/pdf333629 bytesapplication/pdfen-US[SDGs]SDG7Boron compounds; Electric fields; Electrooptical effects; Light absorption; Light modulation; Probability density function; Boron nitride nanotubes; Electro-optical modulation; Nanotubesjournal article10.1063/1.23705612-s2.0-33751555051http://ntur.lib.ntu.edu.tw/bitstream/246246/95592/1/16.pdf