Navarro-Cia, M;
Natrella, M;
Dominec, F;
Delagnes, JC;
Kuzel, P;
Mounaix, P;
Graham, C;
... Mitrofanov, O; + view all
(2013)
Terahertz imaging of sub-wavelength particles with Zenneck surface waves.
APPLIED PHYSICS LETTERS
, 103
(22)
, Article 221103. 10.1063/1.4836195.
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Abstract
Impact of sub-wavelength-size dielectric particles on Zenneck surface waves on planar metallic antennas is investigated at terahertz (THz) frequencies with THz near-field probe microscopy. Perturbations of the surface waves show the particle presence, despite its sub-wavelength size. The experimental configuration, which utilizes excitation of surface waves at metallic edges, is suitable for THz imaging of dielectric sub-wavelength size objects. As a proof of concept, the effects of a small strontium titanate rectangular particle and a titanium dioxide sphere on the surface field of a bow-tie antenna are experimentally detected and verified using full-wave simulations.
| Type: | Article |
|---|---|
| Title: | Terahertz imaging of sub-wavelength particles with Zenneck surface waves |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.4836195 |
| Publisher version: | http://dx.doi.org/10.1063/1.4836195 |
| Language: | English |
| Additional information: | © 2013 Author(s).. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1416553 |
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