کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1237448 968893 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phonon vibrational frequencies of all single-wall carbon nanotubes at the Lambda point: Reduced matrix calculations
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Phonon vibrational frequencies of all single-wall carbon nanotubes at the Lambda point: Reduced matrix calculations
چکیده انگلیسی
With a simple method-the reduced matrix method, we simplified the calculation of the phonon vibrational frequencies according to SWNTs structure and their phonon symmetric property and got the dispersion properties of all SWNTs at Γ point in Brillouin zone, whose diameters lie between 0.6 and 2.5 nm. The calculating time is shrunk about 2-4 orders. A series of the dependent relationships between the diameters of SWNTs and the frequencies of Raman and IR active modes are given. Several fine structures including “glazed tile” structures in ω ∼ d figures are found, which might predict a certain macro-quantum phenomenon of the phonons in SWNTs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 71, Issue 3, 1 December 2008, Pages 1102-1105
نویسندگان
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