scholarly journals High-angular-resolution electron energy loss spectroscopy of hexagonal boron nitride

2007 ◽  
Vol 90 (20) ◽  
pp. 204105 ◽  
Author(s):  
R. Arenal ◽  
M. Kociak ◽  
N. J. Zaluzec
Keyword(s):  
Boron Nitride ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Angular Resolution ◽  
Hexagonal Boron Nitride ◽  
High Angular Resolution ◽  
Resolution Electron ◽  
Electron Energy Loss

Optical Gap Measurements on Individual Boron Nitride Nanotubes by Electron Energy Loss Spectroscopy

2008 ◽  
Vol 14 (3) ◽  
pp. 274-282 ◽  
Author(s):  
Raul Arenal ◽  
Odile Stéphan ◽  
Mathieu Kociak ◽  
Dario Taverna ◽  
Annick Loiseau ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Hexagonal Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
Electromagnetic Response ◽  
Optical Gap ◽  
Spatially Resolved ◽  
Electron Energy Loss

AbstractElectromagnetic response of individual boron nitride nanotubes (BNNTs) has been studied by spatially resolved electron energy loss spectroscopy (EELS). We demonstrate how dedicated EELS methods using subnanometer electron probes permit the analysis of local dielectric properties of a material on a nanometer scale. The continuum dielectric model has been used to analyze the low-loss EEL spectra recorded from these tubes. Using this model, we demonstrate the weak influence of the out-of-plane contribution to the dielectric response of BNNTs. The optical gap, which can be deduced from the measurements, is found to be equal to 5.8 ± 0.2 eV, which is close to that of the hexagonal boron nitride. This value is found to be independent of the nanotubes configuration (diameter, helicity, number of walls, and interaction between the different walls).

scholarly journals Angle-resolved electron energy loss spectroscopy in hexagonal boron nitride

2017 ◽  
Vol 96 (11) ◽  
Author(s):  
Frédéric Fossard ◽  
Lorenzo Sponza ◽  
Léonard Schué ◽  
Claudio Attaccalite ◽  
François Ducastelle ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Hexagonal Boron Nitride ◽  
Electron Energy Loss
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