Active terahertz nanoantennas based on VO2 phase transition

Minah Seo, Jisoo Kyoung, Hyeongryeol Park, Sukmo Koo, Hyun Sun Kim, Hannes Bernien, Bong Jun Kim, Jong Ho Choe, Yeong Hwan Ahn, Hyun Tak Kim, Namkyoo Park, Q Han Park, Kwangjun Ahn, Dai Sik Kim

Research output: Contribution to journalArticle

224 Citations (Scopus)

Abstract

Unusual performances of metamaterials such as negative index of refraction, memory effect, and cloaking originate from the resonance features of the metallic composite atom1-6. Indeed, control of metamaterial properties by changing dielectric environments of thin films below the metallic resonators has been demonstrated7-11. However, the dynamic control ranges are still limited to less than a factor of 10,7-11 with the applicable bandwidth defined by the sharp resonance features. Here, we present ultra-broad-band metamaterial thin film with colossal dynamic control range, fulfilling present day research demands. Hybridized with thin VO2 (vanadium dioxide)12-18 films, nanoresonator supercell arrays designed for one decade of spectral width in terahertz frequency region show an unprecedented extinction ratio of over 10000 when the underlying thin film experiences a phase transition. Our nanoresonator approach realizes the full potential of the thin film technology for long wavelength applications.

Original languageEnglish
Pages (from-to)2064-2068
Number of pages5
JournalNano Letters
Volume10
Issue number6
DOIs
Publication statusPublished - 2010 Jun 9

Fingerprint

Metamaterials
Phase transitions
Thin films
dynamic control
thin films
Refraction
dioxides
Vanadium
vanadium
Resonators
refraction
extinction
resonators
broadband
bandwidth
Bandwidth
Data storage equipment
Wavelength
composite materials
Nanoantennas

Keywords

  • Nanoantenna
  • Phase transition device
  • Terahertz active device
  • Terahertz spectroscopy
  • Terahertz VO

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Seo, M., Kyoung, J., Park, H., Koo, S., Kim, H. S., Bernien, H., ... Kim, D. S. (2010). Active terahertz nanoantennas based on VO2 phase transition. Nano Letters, 10(6), 2064-2068. https://doi.org/10.1021/nl1002153

Active terahertz nanoantennas based on VO2 phase transition. / Seo, Minah; Kyoung, Jisoo; Park, Hyeongryeol; Koo, Sukmo; Kim, Hyun Sun; Bernien, Hannes; Kim, Bong Jun; Choe, Jong Ho; Ahn, Yeong Hwan; Kim, Hyun Tak; Park, Namkyoo; Park, Q Han; Ahn, Kwangjun; Kim, Dai Sik.

In: Nano Letters, Vol. 10, No. 6, 09.06.2010, p. 2064-2068.

Research output: Contribution to journalArticle

Seo, M, Kyoung, J, Park, H, Koo, S, Kim, HS, Bernien, H, Kim, BJ, Choe, JH, Ahn, YH, Kim, HT, Park, N, Park, QH, Ahn, K & Kim, DS 2010, 'Active terahertz nanoantennas based on VO2 phase transition', Nano Letters, vol. 10, no. 6, pp. 2064-2068. https://doi.org/10.1021/nl1002153
Seo M, Kyoung J, Park H, Koo S, Kim HS, Bernien H et al. Active terahertz nanoantennas based on VO2 phase transition. Nano Letters. 2010 Jun 9;10(6):2064-2068. https://doi.org/10.1021/nl1002153
Seo, Minah ; Kyoung, Jisoo ; Park, Hyeongryeol ; Koo, Sukmo ; Kim, Hyun Sun ; Bernien, Hannes ; Kim, Bong Jun ; Choe, Jong Ho ; Ahn, Yeong Hwan ; Kim, Hyun Tak ; Park, Namkyoo ; Park, Q Han ; Ahn, Kwangjun ; Kim, Dai Sik. / Active terahertz nanoantennas based on VO2 phase transition. In: Nano Letters. 2010 ; Vol. 10, No. 6. pp. 2064-2068.
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