Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging

M. Al-Sharabi, T. Mudley, D. Markl, P. Bawuah, A. P. Karttunen, C. J. Ridgway, P. A.C. Gane, J. Ketolainen, K. E. Peiponen, T. Rades, J. A. Zeitler

Publikation: Bidrag til bog/antologi/rapportKonferencebidrag i proceedingsForskningpeer review

17 Downloads (Pure)

Abstract

Terahertz pulsed imaging (TPI) coupled with a customised flow cell has previously been used successfully to study liquid transport in porous media, such as powder compacts. In some samples, the tracking of the liquid front remains challenging when the refractive indices of liquid and sample are similar and hence little contrast is observed. In this work, we found that even when the relative difference between the refractive indices of liquid and sample is high, it can still be challenging to track the reflection peak of water in some samples while it works fine in others. It is hypothesised that this is due to the formation of a water gradient in these samples due to their specific microstructure and we explore methods to overcome this limitation.

OriginalsprogEngelsk
Titel2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves
ForlagIEEE
Publikationsdato2019
Artikelnummer8874143
ISBN (Elektronisk)9781538682852
DOI
StatusUdgivet - 2019
Begivenhed44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, Frankrig
Varighed: 1 sep. 20196 sep. 2019

Konference

Konference44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019
Land/OmrådeFrankrig
ByParis
Periode01/09/201906/09/2019
NavnInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Vol/bind2019-September
ISSN2162-2027

Citationsformater