Effect of thin-film interference on resonance spectra of distorted metamaterials

Wei Fan Chiang, Chia Yi Huang, Chia Rong Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study investigated a polyethylene terephthalate (PET) substrate and the effect of indium tin oxide (ITO) thin-film interference on the electromagnetic resonance of distorted metamaterials. The photoresist was developed on a PET substrate and swollen using isopropyl alcohol. The SRRs had various total lengths, gaps, and line widths. In addition, each of these three dimensions varied greatly and thus the distorted SRRs exhibited a broadband resonance spectrum. An ITO thin film was coated on the back of the PET substrate with a distorted metamaterials sample, and the terahertz spectrum was measured. The experimental results revealed that the ITO thin film can flatten the spectrum of the SRR sample. To determine the underlying reason, we varied the sheet resistance of the ITO film and observed the differences among the corresponding spectra. The flattened spectrum of the ITO films enhanced the thin-film interference effect of the PET substrate; consequently, the distorted metamaterials exhibited a flattened spectrum. These distorted metamaterials can be applied in terahertz imaging, terahertz communication systems, and optoelectronic integrated circuits.

Original languageEnglish
Title of host publicationTerahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI
EditorsLaurence P. Sadwick, Tianxin Yang
PublisherSPIE
ISBN (Electronic)9781510615472
DOIs
Publication statusPublished - 2018 Jan 1
Event2017 Conference on Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI - San Francisco, United States
Duration: 2018 Jan 292018 Feb 1

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10531
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

Other2017 Conference on Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI
CountryUnited States
CitySan Francisco
Period18-01-2918-02-01

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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