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

doi:10.1109/IRMMW-THz.2019.8874143

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 proceeding › Conference contribution › Scientific › peer-review

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 language	English
Title of host publication	IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves
Publisher	IEEE Computer Society
Number of pages	2
ISBN (Electronic)	9781538682852
DOIs	https://doi.org/10.1109/IRMMW-THz.2019.8874143
Publication status	Published - Sep 2019
MoE publication type	A4 Article in a conference publication
Event	International Conference on Infrared, Millimeter, and Terahertz Waves - Paris, France Duration: 1 Sep 2019 → 6 Sep 2019 Conference number: 44

Publication series

Name	International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume	2019-September
ISSN (Print)	2162-2027
ISSN (Electronic)	2162-2035

Conference

Conference	International Conference on Infrared, Millimeter, and Terahertz Waves
Abbreviated title	IRMMW-THz
Country	France
City	Paris
Period	01/09/2019 → 06/09/2019

Access to Document

10.1109/IRMMW-THz.2019.8874143

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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 IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves [8874143] (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2019-September). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz.2019.8874143

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. / Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging. IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves. IEEE Computer Society, 2019. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz).

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title = "Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging",

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.",

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

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Al-Sharabi, M, Mudley, T, Markl, D, Bawuah, P, Karttunen, AP, Ridgway, CJ, Gane, PAC, Ketolainen, J, Peiponen, KE, Rades, T & Zeitler, JA 2019, Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging. in IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves., 8874143, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, vol. 2019-September, IEEE Computer Society, International Conference on Infrared, Millimeter, and Terahertz Waves, Paris, France, 01/09/2019. https://doi.org/10.1109/IRMMW-THz.2019.8874143

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

IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves. IEEE Computer Society, 2019. 8874143 (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2019-September).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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T1 - Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging

AU - Al-Sharabi, M.

AU - Mudley, T.

AU - Markl, D.

AU - Bawuah, P.

AU - Karttunen, A. P.

AU - Ridgway, C. J.

AU - Gane, P. A.C.

AU - Ketolainen, J.

AU - Peiponen, K. E.

AU - Rades, T.

AU - Zeitler, J. A.

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N2 - 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.

AB - 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.

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M3 - Conference contribution

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BT - IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves

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Al-Sharabi M, Mudley T, Markl D, Bawuah P, Karttunen AP, Ridgway CJ et al. Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging. In IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves. IEEE Computer Society. 2019. 8874143. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz). https://doi.org/10.1109/IRMMW-THz.2019.8874143