THz Frequency Quantification of Water Gradients in Drying Paper
Paper in proceeding, 2020
THz-reflection spectroscopy was used to extract time-varying water gradients in drying paper targets mounted on electrically thick dielectric substrates. The data showed a pronounced and prolonged drop below dry reflectivity when the water content that peaks at low weight (∼10%). A binomial distribution fitted to the acquired data confirms the existence of the time-varying water content gradient and suggests aqueous thin film hydration can be quantified even when the contrast between the film and backing material is low.
Author
Irina Nefedova
Aalto University
Qiushuo Sun
University of Birmingham
Anis Moradikouchi
Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory
Mariangela Baggio
Aalto University
Aleksi Tamminen
Aalto University
Juha Ala-Laurinaho
Aalto University
Emma MacPherson
The University of Warwick
Helena Rodilla
Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory
Jan Stake
Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory
Zachary Taylor
Aalto University
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
21622027 (ISSN) 21622035 (eISSN)
Vol. 2020-November 844-845 9370572
45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020
Virtual, Buffalo, USA,
Virtual, Buffalo, USA,
Postdoc for terahertz imaging
GENIE, Chalmers Gender Initiative for Excellence, 2020-01-01 -- 2021-12-31.
The Chalmers University Foundation, 2020-01-01 -- 2021-12-31.
Areas of Advance
Information and Communication Technology
Materials Science
Infrastructure
Kollberg Laboratory
Subject Categories
Other Materials Engineering
DOI
10.1109/IRMMW-THZ46771.2020.9370572