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Terahertz imaging with metamaterials for biological applications

Title
Terahertz imaging with metamaterials for biological applications
Authors
Seo M.Roh Y.Lee S.-H.Kwak J.Song H.S.Shin S.Kim Y.K.Wu J.W.Ju B.-K.Kang B.
Ewha Authors
우정원
SCOPUS Author ID
우정원scopus
Issue Date
2022
Journal Title
Sensors and Actuators B: Chemical
ISSN
0925-4005JCR Link
Citation
Sensors and Actuators B: Chemical vol. 352
Keywords
MetamaterialsOptical imagingTerahertz spectroscopy
Publisher
Elsevier B.V.
Indexed
SCIE; SCOPUS scopus
Document Type
Article
Abstract
Terahertz (THz) technology has become more widespread due to its diverse range of potential applications, particularly when combined with various functional metamaterials using cutting-edge nanotechnology techniques. In this report, we introduce a highly improved THz imaging technology by comparing complementary metamaterials intuitively based on Babinet's principle. The THz reflectance spectra for the complementary metamaterials exhibit a significant and distinct association with the polarization angle. Four different polarization angles and metamaterial pattern geometries were tested for the reflectance imaging of a target image pattern. Field enhancement on the metamaterial surface was also investigated using finite element simulations to support the experimental results. Optimizing the metamaterial based on the experimental and calculation results led to high image contrast and quality. The proposed label-free imaging platform was then employed to produce clear contrast images for mouse brain tissue and HEK-293 cells, thus highlighting the potential application of this system to real biological samples. © 2021 The Authors
DOI
10.1016/j.snb.2021.130993
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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