The effect of O2 impurities on the low temperature radial thermal expansion of bundles of closed single-walled carbon nanotubes.

A.V. Dolbin1, V.B. Esel'son1, V.G. Gavrilko1, V.G. Manzhelii1, S.N. Popov1, N.A.Vinnikov1, B. Sundqvist2.

 1 Institute for Low Temperature Physics & Engineering NASU, Kharkov 61103, Ukraine

2 Department of Physics, Umea University, SE - 901 87 Umea, Sweden


 The effect of oxygen impurities upon the radial thermal expansion αr  of  bundles of closed single-walled carbon nanotubes has been investigated in the temperature interval 2.2-48 K by the dilatometric method.  Saturation of  bundles of nanotubes with oxygen caused an increase in the positive αr-values in the whole interval of temperatures used. Also, several peaks appeared in the temperature dependence αr(T) above 20 K. The low temperature desorption of oxygen from powders consisting of bundles of single-walled nanotubes with open and closed ends has been investigated. 

full text of our publication could be found in following journals:

Fizika Nizkikh Temperatur and Low Temperature Physics


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Tags: carbon, expansion, nanotube, oxygen, radial, sorption, thermal


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