Title

Investigation of Temperature Dependent Multi-Walled Nanotube G and D Doublet Using Pseudo-Voigt Functions

Authors

Authors

G. Freihofer; S. Raghavan;D. Gosztola

Comments

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Abbreviated Journal Title

Appl. Spectrosc.

Keywords

Pseudo-Voigt; Raman spectroscopy; Multi-walled nanotube (MWNT); Temperature; MULTIWALLED CARBON NANOTUBES; X-RAY-DIFFRACTION; RAMAN-SPECTROSCOPY; VIBRATIONAL-MODES; AMORPHOUS-CARBON; SPECTRAL-ANALYSIS; SCATTERING; NANOCOMPOSITES; DISPERSION; OXIDATION; Instruments & Instrumentation; Spectroscopy

Abstract

A pseudo-Voigt (PV) function is used as a representation of the Stoke's phonon frequency distributions for a multi-walled nanotube (MWNT) composite G and D doublet. Variable peak assignments with the PV function have been shown to enhance the resolution of these bands commonly used for characterization of carbon nanotube (CNT) composites. The peak assignment study was applied to an in-situ temperature experiment where the addition of new sub-bands in the G and D doublet was determined to reduce the uncertainty of the Raman characteristics. Fitting the spectrum with five pseudo-Voigt bands was concluded to give the most consistent results, producing the lowest uncertainty values for G-peak position (v(G)) and D/G intensity ratio.

Journal Title

Applied Spectroscopy

Volume

67

Issue/Number

3

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

321

Last Page

328

WOS Identifier

WOS:000315833400011

ISSN

0003-7028

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