The effect of sorbed hydrogen on low temperature radial thermal expansion of single walled carbon nanotube bundles

Details The effect of sorbed hydrogen on low temperature radial thermal expansion of single walled carbon nanotube bundles The effect of sorbed hydrogen on low temperature radial thermal expansion of single walled carbon nanotube bundles

2009-07-14

arxiv.org/abs/0907.2325v1

Fizika Nizkikh Temperatur, 2009, v. 35, No. 12, p. 1209--1214

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 2 figures

Scientific paper

The effect of a normal H2 impurity upon the radial thermal expansion (Ar) of SWNT bundles has been investigated in the interval T = 2.2-27 K using the dilatometric method. It is found that H2 saturation of SWNT bundles causes a shift of the temperature interval of the negative thermal expansion towards lower (as compared to pure CNTs) temperatures and a sharp increase in the magnitude of (Ar) in the whole range of temperatures investigated. The low temperature desorption of H2 from a powder consisting of bundles of SWNTs, open and closed at the ends, has been investigated.

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