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

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 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.

Original languageEnglish
Title of host publication2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
Place of PublicationPiscataway, N.J.
PublisherIEEE
Number of pages2
ISBN (Electronic)9781538682852
DOIs
Publication statusPublished - 21 Oct 2019
Event44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, France
Duration: 1 Sep 20196 Sep 2019

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume2019-September
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Conference

Conference44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019
CountryFrance
CityParis
Period1/09/196/09/19

Keywords

  • terahertz pulsed imaging
  • refractive index
  • powder compacts

Fingerprint Dive into the research topics of 'Difficulties of subsurface liquid front tracking in porous media with terahertz pulsed imaging'. Together they form a unique fingerprint.

  • Cite this

    Al-Sharabi, M., Mudley, T., Markl, D., Bawuah, P., Karttunen, A. P., Ridgway, C. J., Gane, P. A. C., Ketolainen, J., Peiponen, K. E., Rades, T., & Zeitler, J. A. (2019). Difficulties of subsurface liquid front tracking in porous media with terahertz pulsed imaging. In 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2019-September). IEEE. https://doi.org/10.1109/IRMMW-THz.2019.8874143