Electron diffraction and electron energy-loss spectroscopy studies of a hybrid material composed of coronene molecules encapsulated in single-walled carbon nanotubes

Microscopy ◽  
2013 ◽  
Vol 63 (2) ◽  
pp. 111-117 ◽  
Author(s):  
Md. Mahbubul Haque ◽  
Yohei Sato ◽  
Masami Terauchi ◽  
Yoko Iizumi ◽  
Toshiya Okazaki
Keyword(s):  
Carbon Nanotubes ◽  
Electron Diffraction ◽  
Energy Loss ◽  
Electron Energy ◽  
Hybrid Material ◽  
Electron Energy Loss Spectroscopy ◽  
Single Walled Carbon Nanotubes ◽  
Spectroscopy Studies ◽  
Walled Carbon Nanotubes ◽  
Electron Energy Loss

Electron energy-loss spectroscopy studies of single wall carbon nanotubes

Carbon ◽  
1999 ◽  
Vol 37 (5) ◽  
pp. 733-738 ◽  
Author(s):  
M. Knupfer ◽  
T. Pichler ◽  
M.S. Golden ◽  
J. Fink ◽  
A. Rinzler ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Spectroscopy Studies ◽  
Electron Energy Loss

High-Energy Resolution Electron Energy-Loss Spectroscopy Study of Interband Transitions Characteristic to Single-Walled Carbon Nanotubes

2014 ◽  
Vol 20 (3) ◽  
pp. 807-814 ◽  
Author(s):  
Yohei Sato ◽  
Masami Terauchi
Keyword(s):  
Carbon Nanotubes ◽  
Energy Loss ◽  
Electron Energy ◽  
Single Walled Carbon Nanotubes ◽  
High Energy Resolution ◽  
Interband Transitions ◽  
Single Walled Carbon ◽  
Chiral Structures ◽  
Walled Carbon Nanotubes ◽  
Electron Energy Loss

AbstractAn electron energy-loss spectroscopic (EELS) study using a monochromator transmission electron microscope was conducted for investigating the dielectric response of isolated single-walled carbon nanotubes (SWCNTs) owing to interband transitions characteristic to chiral structures. Individual chiral structures of the SWCNTs were determined by electron diffraction patterns. EELS spectra obtained from isolated SWCNTs showed sharp peaks below π plasmon energy of 5 eV, which were attributed to the characteristic interband transitions of SWCNTs. In addition, unexpected shoulder structures were observed at the higher energy side of each sharp peak. Simulations of EELS spectra by using the continuum dielectric theory showed that an origin of the shoulder structures was because of the surface dipole mode along the circumference direction of the SWCNT. It was noticed that the electron excitation energies obtained by EELS were slightly higher than those of optical studies, which might be because of the inelastic scattering process with the momentum transfers. To interpret the discrepancy between the EELS and optical experiments, it is necessary to conduct more accurate simulation including the first principle calculation for the band structure of SWCNTs.

Sign in / Sign up

Export Citation Format

Share Document