Nondestructive evaluation of cork enclosures using terahertz/millimeter wave spectroscopy and imaging

Document Type

Article

Publication Date

1-1-2008

Abstract

Natural cork enclosures, due to their cell structure, composition, and low moisture are fairly transparent to terahertz (THz) and millimeter waves enabling nondestructive evaluation of the cork's surface and interior. It is shown that the attenuation coefficient of the defect-free cork can be modeled with a Mie scattering model in the weakly scattering limit. Contrast in the THz images is a result of enhanced scattering of THz radiation by defects or voids as well as variations in the cork cell structure. The presence of voids, defects, and changes in grain structure can be determined with roughly 100-300 μm resolution. © 2008 Optical Society of America.

Identifier

40749106616 (Scopus)

Publication Title

Applied Optics

External Full Text Location

https://doi.org/10.1364/AO.47.000072

e-ISSN

15394522

ISSN

1559128X

PubMed ID

18157279

First Page

72

Last Page

78

Issue

1

Volume

47

This document is currently not available here.

Share

COinS