Multi-wall carbon nanotubes investigated by positron annihilation techniques and microscopies for further production handling

A. T. Luu, Z. Kajcsos, N. D. Thanh, T. Q. Dung, M. V. Nhon, K. Lázár, K. Havancsák, G. Huhn, Z. Horváth, T. D. Tap, L. T. Son, P. T. Phuc

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Multi-wall carbon nanotube samples with various tube diameters produced by Thermal Chemical Vapor Deposition technique using various catalysts were studied by various microscopic methods and positron annihilation spectroscopy (PAS) with the aim of assessing the applicability of these methods for structural studies in these novel materials. Specifically, positron lifetime (LT) and Doppler broadening (DB) techniques, transmission electron microscopy (TEM) and atomic force microscopy (AFM) were employed, on iron-containing samples Mössbauer spectroscopy was also utilized. The PAS measurements were carried out on densely packed powder samples and on samples pressed into pills in atmospheric pressure and in vacuum as well. The lifetime values could be interpreted by assuming trapping of positrons, the low contribution from longer-living trapped positronium can be probably related to defects on walls of the tubes. Possibility of correlation of LT and DB data with the nanotube sizes and sample composition was also considered.

Original languageEnglish
Pages (from-to)2578-2581
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume6
Issue number11
DOIs
Publication statusPublished - 2009

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positron annihilation
carbon nanotubes
microscopy
life (durability)
positrons
spectroscopy
tubes
positronium
nanotubes
atmospheric pressure
trapping
vapor deposition
atomic force microscopy
iron
catalysts
vacuum
transmission electron microscopy
defects

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Multi-wall carbon nanotubes investigated by positron annihilation techniques and microscopies for further production handling. / Luu, A. T.; Kajcsos, Z.; Thanh, N. D.; Dung, T. Q.; Nhon, M. V.; Lázár, K.; Havancsák, K.; Huhn, G.; Horváth, Z.; Tap, T. D.; Son, L. T.; Phuc, P. T.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 6, No. 11, 2009, p. 2578-2581.

Research output: Contribution to journalArticle

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AU - Nhon, M. V.

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