Review of moisture and liquid detection and mapping using Terahertz imaging

Document Type

Article

Publication Date

2-1-2012

Abstract

The relatively high permittivity of liquid water compared to other materials in the Terahertz (THz) range enables a contrast mechanism for the detection and imaging of moisture. In this paper, spatial mapping of moisture and liquid detection by THz imaging is reviewed. Analysis of the moisture content is discussed in terms of a double Debye model for liquid water and effective medium models for the permittivity of the dry and 'wet' materials of interest. Examples from medical applications, forestry products, agriculture/food products, and polymers are reviewed. Extraction of diffusion rates and diffusion maps from THz images are discussed. © Springer Science+Business Media, LLC 2012.

Identifier

84859804777 (Scopus)

Publication Title

Journal of Infrared Millimeter and Terahertz Waves

External Full Text Location

https://doi.org/10.1007/s10762-011-9865-7

e-ISSN

18666906

ISSN

18666892

First Page

97

Last Page

126

Issue

2

Volume

33

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