Raman-Active Modes in Finite and Infinite Double-Walled Boron Nitride Nanotubes

Abstract

International audienceIn this theoretical work, we study the Raman spectra of double-walled boron nitride nanotubes (DBNNTs) as a function of their diameters, chiralities, and lengths. Calculations are performed using the spectral moments method coupled to the bond polarizability model. This original approach allows us to consider not only infinite tubes as usual in most theoretical models but also tubes with finite lengths. We provide benchmark theoretical data to estimate thediameter and length of DBNNTs using Raman measurements

Synthesis of Boron Nitride Nanotubes Using Plasma-Assisted CVD Catalyzed by Cu Nanoparticles and Oxygen

“…This region is characteristic of the radial breathing mode (RBM) of the BNNTs. It has been predicted that only single walled and double walled BNNTs show the RBM [ 9 , 34 , 35 ], and experimental observations cannot be found in the literature to the authors’ knowledge. The Cu catalyst obtained by reducing in H 2 plasma was also measured using a Raman microscope.…”

Electronic and Vibrational studies of Single Wall Carbon Nanotubes inside Boron nitride Nanotubes

“…One of the most powerful tools to investigate nanotructures vibrational, optical and electronic properties is Raman spectroscopy. Vibrational Raman spectroscopy has been shown to play a major role in CNTs [14,15,16,17] and in BNNTs [18,19,20].Raman spectra of CNTs and BNNTs show a strong line located in the 1570-1600 cm −1 range [21] and in the 1360-1380 cm −1 range [22,23,24,25,26]. Raman spectra of SCNTs and SBNNTs are dominated by the so called radial breathing mode (RBM) below 500cm −1 and by the tangential modes(TM) between 1200 and 1600cm −1 [27,28,29].The thermal treatment of fullerene inside BNNTs (C60@BNNT) at 1200…”

Tube-Length Dependence on Theoretical Raman Spectra of Single-Walled BC3 Nanotubes and Bundle Size Effect

“…The SMM can be applied to large systems whatever the type of atomic forces, the spatial dimension, and structure of the material. It was previously used to study the dynamical properties of different disordered systems having more than 10 6 degrees of freedom and it was successfully applied to calculate Raman spectra of nanotubes and derivatives. − …”