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Utilizing multilayer structures to enhance terahertz characterization of thin films ranging from aqueous solutions to histology slides

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Sun, Qiushuo, Liu, Kai, Chen, Xuequan, Liu, Xudong, Hernandez-Serrano, Arturo I. and Pickwell-MacPherson, Emma (2019) Utilizing multilayer structures to enhance terahertz characterization of thin films ranging from aqueous solutions to histology slides. Optics Letters, 44 (9). pp. 2149-2152. doi:10.1364/OL.44.002149 ISSN 0146-9592.

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Official URL: http://dx.doi.org/10.1364/OL.44.002149

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Abstract

We propose a multilayer geometry to characterize thin-film samples in reflection terahertz time domain spectroscopy. Theory indicates that this geometry has higher sensitivity compared to ordinary transmission or reflection geometries when characterizing both low- and high-absorption samples. Pure water and water–ethanol mixtures are measured to verify the characterization accuracy of the proposed geometry and its capability to measure trace liquids. Paraffin-embedded oral cancer tissue is imaged to further show how the proposed geometry enhances the sensitivity for solid low-absorptive films.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Terahertz spectroscopy, Thin films
Journal or Publication Title: Optics Letters
Publisher: Optical Society of America
ISSN: 0146-9592
Official Date: 1 May 2019
Dates:
DateEvent
1 May 2019Published
17 April 2019Available
3 March 2019Accepted
Volume: 44
Number: 9
Page Range: pp. 2149-2152
DOI: 10.1364/OL.44.002149
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): © 2019 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 28 May 2019
Date of first compliant Open Access: 17 April 2020
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
14201415Research Grants Council, University Grants Committeehttp://dx.doi.org/10.13039/501100002920
ITS/371/16Hong Kong Innovation and Technology FundUNSPECIFIED
61805148[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
UNSPECIFIEDHong Kong PhD Fellowship SchemeUNSPECIFIED
Wolfson Award[RS] Royal Societyhttp://dx.doi.org/10.13039/501100000288

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