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Title: Terahertz imaging of sub-wavelength particles with Zenneck surface waves

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.

Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
22253937
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 103; Journal Issue: 22; Other Information: (c) 2013 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTENNAS; DIELECTRIC MATERIALS; EXCITATION; PARTICLES; PERTURBATION THEORY; SIMULATION; STRONTIUM; TITANATES; TITANIUM OXIDES; WAVE PROPAGATION; WAVELENGTHS

Citation Formats

Navarro-Cía, M., E-mail: m.navarro@imperial.ac.uk, Centre for Plasmonics and Metamaterials, Imperial College London, London SW7 2AZ, Centre for Terahertz Science and Engineering, Imperial College London, London SW7 2AZ, Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, Natrella, M., Graham, C., Renaud, C. C., Seeds, A. J., Mitrofanov, O., E-mail: o.mitrofanov@ucl.ac.uk, Dominec, F., Kužel, P., E-mail: kuzelp@fzu.cz, Delagnes, J. C., and Mounaix, P., E-mail: p.mounaix@loma.u-bordeaux1.fr. Terahertz imaging of sub-wavelength particles with Zenneck surface waves. United States: N. p., 2013. Web. doi:10.1063/1.4836195.
Navarro-Cía, M., E-mail: m.navarro@imperial.ac.uk, Centre for Plasmonics and Metamaterials, Imperial College London, London SW7 2AZ, Centre for Terahertz Science and Engineering, Imperial College London, London SW7 2AZ, Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, Natrella, M., Graham, C., Renaud, C. C., Seeds, A. J., Mitrofanov, O., E-mail: o.mitrofanov@ucl.ac.uk, Dominec, F., Kužel, P., E-mail: kuzelp@fzu.cz, Delagnes, J. C., & Mounaix, P., E-mail: p.mounaix@loma.u-bordeaux1.fr. Terahertz imaging of sub-wavelength particles with Zenneck surface waves. United States. https://doi.org/10.1063/1.4836195
Navarro-Cía, M., E-mail: m.navarro@imperial.ac.uk, Centre for Plasmonics and Metamaterials, Imperial College London, London SW7 2AZ, Centre for Terahertz Science and Engineering, Imperial College London, London SW7 2AZ, Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, Natrella, M., Graham, C., Renaud, C. C., Seeds, A. J., Mitrofanov, O., E-mail: o.mitrofanov@ucl.ac.uk, Dominec, F., Kužel, P., E-mail: kuzelp@fzu.cz, Delagnes, J. C., and Mounaix, P., E-mail: p.mounaix@loma.u-bordeaux1.fr. 2013. "Terahertz imaging of sub-wavelength particles with Zenneck surface waves". United States. https://doi.org/10.1063/1.4836195.
@article{osti_22253937,
title = {Terahertz imaging of sub-wavelength particles with Zenneck surface waves},
author = {Navarro-Cía, M., E-mail: m.navarro@imperial.ac.uk and Centre for Plasmonics and Metamaterials, Imperial College London, London SW7 2AZ and Centre for Terahertz Science and Engineering, Imperial College London, London SW7 2AZ and Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE and Natrella, M. and Graham, C. and Renaud, C. C. and Seeds, A. J. and Mitrofanov, O., E-mail: o.mitrofanov@ucl.ac.uk and Dominec, F. and Kužel, P., E-mail: kuzelp@fzu.cz and Delagnes, J. C. and Mounaix, P., E-mail: p.mounaix@loma.u-bordeaux1.fr},
abstractNote = {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.},
doi = {10.1063/1.4836195},
url = {https://www.osti.gov/biblio/22253937}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 22,
volume = 103,
place = {United States},
year = {Mon Nov 25 00:00:00 EST 2013},
month = {Mon Nov 25 00:00:00 EST 2013}
}