THz Frequency Quantification of Water Gradients in Drying Paper

Irina Nefedova, Qiushuo Sun, Anis Moradikouchi, Mariangela Baggio, Aleksi Tamminen, Juha Ala-Laurinaho, Emma MacPherson, Helena Rodilla, Jan Stake, Zachary Taylor

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Abstract

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.

Original languageEnglish
Title of host publication2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020
PublisherIEEE
Pages844-845
Number of pages2
ISBN (Electronic)9781728166209
DOIs
Publication statusPublished - 8 Nov 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Infrared, Millimeter, and Terahertz Waves - Virtual, Online, Buffalo, United States
Duration: 8 Nov 202013 Nov 2020
Conference number: 45

Publication series

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

Conference

ConferenceInternational Conference on Infrared, Millimeter, and Terahertz Waves
Abbreviated titleIRMMW-THz
CountryUnited States
CityBuffalo
Period08/11/202013/11/2020

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