Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging
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- Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging
Accepted author manuscript, 593 KB, PDF document
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 |
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Title of host publication | 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves |
Publisher | IEEE |
Publication date | 2019 |
Article number | 8874143 |
ISBN (Electronic) | 9781538682852 |
DOIs | |
Publication status | Published - 2019 |
Event | 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, France Duration: 1 Sep 2019 → 6 Sep 2019 |
Conference
Conference | 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 |
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Land | France |
By | Paris |
Periode | 01/09/2019 → 06/09/2019 |
Series | International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz |
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Volume | 2019-September |
ISSN | 2162-2027 |
ID: 241596142