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Cited by 31Terahertz technology and applicationsMetamaterials and Metasurfaces ApplicationsSuperconducting and THz Device Technology

Terahertz Sensing of Thin Poly(ethylene Terephthalate) Film Thickness Using a Metallic Mesh

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Yoshida, Shigeki, Kato, Eiji, Suizu, Koji, Nakagomi, Yoichi, Ogawa, Yuichi, Kawase, Kodo·2009·Applied Physics Express
DOI 10.1143/apex.2.012301
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Abstract

A metallic mesh, i.e., a metallic thin film with regularly spaced openings, works as a band-pass filter in the terahertz region. The filter's transmittance is far higher than the open-area ratio and its transmission spectrum is affected by the index of refraction in and above the openings. Therefore, metallic-mesh films can be used as high-sensitivity sensing or imaging conduits if samples adhere to the metal surface. Here, we report on our success in detecting 1-µm-thickness differences in poly(ethylene terephthalate) (PET) films and recording two-dimensional (2D) images using metallic-mesh sensing and imaging applications.

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  • Several methods have been reported to lower the detection threshold for terahertz thin-film sensing, such as difference signals, metamaterial resonance shifts, and metal meshes.

    “Various techniques have been reported to improve the detection threshold for THz thin film sensing, e. g., evaluation of difference signals, 3 resonance changes of metamaterials, 4 or the application of metal meshes to enhance the amplitude reduction of the THz bandpass.5”

    From Highly sensitive terahertz measurement of layer thickness using a two-cylinder waveguide sensor (2010) · cites this paper as [5]

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Research works printed but not linked: 13

  1. A. K. Azad, Y. Zhao, W. Zhang, and M. He: Opt. Lett. 31 (2006) 2637. · DOI
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Authors
Yoshida, S., Kato, E., Suizu, K., Nakagomi, Y., Ogawa, Y., & Kawase, K.
Affiliations
  • Nagoya University (JP)
  • Advantest (Japan) (JP)
  • Tohoku University (JP)
ORCID
Venue
Applied Physics Express
Publisher
IOP Publishing
Published
2009-01-16
Volume
2
Issue
1
Pages
012301
ISSN
  • 1882-0778 (ISSN-L)
  • 1882-0786
DOI
10.1143/apex.2.012301
OpenAlex
W1969091702
Cited by
31
References
6
Citations by year
2025: 1 · 2023: 1 · 2022: 1 · 2021: 1 · 2019: 1 · 2018: 1 · 2017: 2 · 2015: 1 · 2014: 4 · 2013: 8 · 2012: 2
FWCI
2.64
Type
journal article
Language
en
Open access
Locations
Applied Physics Express (publishedVersion)
Funders
Ministry of Education, Culture, Sports, Science and Technology
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Superconducting and THz Device Technology
Keywords
terahertz sensing, metal mesh, PET film, film thickness measurement, transmission spectra, refractive index, terahertz imaging, two-dimensional imaging

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