Terahertz imaging of sub-wavelength particles with Zenneck surface waves

Miguel Navarro-Cia; M. Natrella; F. Dominec; J. C. Delagnes; P. Kužel; P. Mounaix; C. Graham; C. C. Renaud; A. J. Seeds; O. Mitrofanov

doi:10.1063/1.4836195

Terahertz imaging of sub-wavelength particles with Zenneck surface waves

Miguel Navarro-Cia, M. Natrella, F. Dominec, J. C. Delagnes, P. Kužel, P. Mounaix, C. Graham, C. C. Renaud, A. J. Seeds, O. Mitrofanov

Engineering and Physical Sciences

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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.

Original language	English
Article number	221103
Journal	Applied Physics Letters
Volume	103
Issue number	22
DOIs	https://doi.org/10.1063/1.4836195
Publication status	Published - 25 Nov 2013

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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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.",

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AU - Navarro-Cia, Miguel

AU - Natrella, M.

AU - Dominec, F.

AU - Delagnes, J. C.

AU - Kužel, P.

AU - Mounaix, P.

AU - Graham, C.

AU - Renaud, C. C.

AU - Seeds, A. J.

AU - Mitrofanov, O.

PY - 2013/11/25

Y1 - 2013/11/25

N2 - 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.

AB - 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.

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Terahertz imaging of sub-wavelength particles with Zenneck surface waves

Abstract

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