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Analysis of capillary condensation of vapor in multi-wall carbon nanotubes

  • Wei Wang*
  • , Xin Wang
  • , Tuo Li
  • , Weiping Chen
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Multi-wall Carbon Nanotubes (MWNTs) is the new hotspot material as the active sensing element, but there is no certain theory on the phenomenon of the vapor's capillary condensation in MWNTs for the present. This paper presents a new theory that the capillary condensation of vapor in MWNTs mostly occur in the internal hollow tube, according to the calculation of equivalent model of MWNTs. A kind of carbon nanotubes (CNTs) humidity sensor based on quartz crystal microbalance was fabricated, CNTs employed as adsorption materials. The sensor was put in 11% and 97% relative humidity environment in experimental, and the value of MH2O/MCNT was calculated. The theory in this paper is proved by the comparison between the experimental and the analysis results.

Original languageEnglish
Title of host publicationMEMS/NEMS Nano Technology
PublisherTrans Tech Publications Ltd
Pages694-698
Number of pages5
ISBN (Print)9783037851753
DOIs
StatePublished - 2011
Externally publishedYes

Publication series

NameKey Engineering Materials
Volume483
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Keywords

  • Capillary Condensation
  • Multi-wall Carbon Nanotubes
  • Quartz Crystal

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