| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ala-Laurinaho, Juha
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Characterization of Skin Permittivity for Human Fingers by Open-ended Waveguide at Sub-THzcitations
- 2024Complex Permittivity Characterization of Low-Loss Dielectric Slabs at Sub-THzcitations
- 2023Frequency-multiplexing for imaging at submillimeter waves
- 2023Comparison of Additively Manufactured Dual-Polarized Probe Antennas at Ku-Bandcitations
- 2023Dual-Polarized 6–18 GHz Antenna Array with Low-Profile Inverted BoR Elementscitations
- 2023Submillimeter-wave cornea phantom sensing over an extended depth of field with an axicon-generated Bessel beamcitations
- 2022Vector spherical harmonic analysis and experimental validation of spherical shells illuminated with broadband, millimeter wave Gaussian beams : applications to corneal sensingcitations
- 2022Characterization of bound and free water in gelatin hydrogels and their contribution to THz frequency permittivity
- 2021Submillimeter-Wave Permittivity Measurements of Bound Water in Collagen Hydrogels via Frequency Domain Spectroscopycitations
- 2019Integrated Metal-lens Antennas with Reduced Height at 71-76 GHz
- 2018Systematic Design of Printable Metasurfacescitations
- 2018Systematic Design of Printable Metasurfaces: Validation Through Reverse-offset Printed Millimeter-wave Absorberscitations
- 2018E-Band Beam-Steerable and Scalable Phased Antenna Array for 5G Access Pointcitations
- 2018Systematic Design of Printable Metasurfaces:Validation Through Reverse-offset Printed Millimeter-wave Absorberscitations
- 2016Towards printed millimeter-wave components: Material characterizationcitations
- 2012Using optimized eccentricity rexolite lens for electrical beam steering with inte-grated aperture coupled patch arraycitations
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article
Submillimeter-wave cornea phantom sensing over an extended depth of field with an axicon-generated Bessel beam
Abstract
<p>The feasibility of a 220 - 330 GHz zero order axicon generated Bessel beam for corneal water content was explored. Simulation and experimental data from the 25-degree cone angle hyperbolic-axicon lens illuminating metallic spherical targets demonstrate a monotonically decreasing, band integrated, backscatter intensity for increasing radius of curvature from 7 &#x2013; 11 mm, when lens reflector and optical axis are aligned. Further, for radii > = 9.5 mm, maximum signal was obtained with a 1 mm transverse displacement between lens and reflector optical axes arising from spatial correlation between main lobe and out of phase side lobes. Thickness and permittivity parameter estimation experiments were performed on an 8 mm radius of curvature, 1 mm thick fused quartz dome over a 10 mm axial span. Extracted thickness and permittivity varied by less than &#x223C; 25 &#x03BC;m and 0.2 respectively after correction for superluminal velocity. Estimated water permittivity and thickness of water backed gelatin phantoms showed significantly more variation due to a time varying radius of curvature. To the best of our knowledge, this is the first work that describes axicon generated Bessel beam measurements of layered spheres with varying radii of curvature, in the submillimeter range.</p>