Non-destructive measurement of water diffusion in natural cork enclosures using terahertz spectroscopy and imaging

Anthony J. Teti, David E. Rodriguez, John Federici, Caroline Brisson

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Terahertz (THz) imaging enables non-destructive evaluation of many materials' internal structures which could not be probed by visual analysis alone. In this paper, we apply THz imaging to non-destructively probe and image the diffusion of water through natural cork samples. The temporal and spatial distribution of water is analyzed as it diffuses throughout the cork structure. An average diffusion coefficient comparable to previous work in the field is extracted from this analysis. Data is also presented to show that the diffusion coefficient is not uniform throughout the cork but changes dramatically due to the local structure and composition of the cork.

Original languageEnglish (US)
Pages (from-to)513-527
Number of pages15
JournalJournal of Infrared, Millimeter, and Terahertz Waves
Volume32
Issue number4
DOIs
StatePublished - Apr 1 2011

All Science Journal Classification (ASJC) codes

  • Radiation
  • Instrumentation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Keywords

  • Cork
  • Diffusion
  • Non-destructive evaluation
  • Terahertz
  • Wood

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