Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies

Abstract The capability for actual measurements—not just simulations—of the dynamical behavior of THz electromagnetic waves, including interactions with prevalent 3D objects, has become increasingly important not only for developments of various THz devices, but also for reliable evaluation of elect...

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Autores principales:	T. Notake, T. Iyoda, T. Arikawa, K. Tanaka, C. Otani, H. Minamide
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e683b7b344f743398454aefae413e65d
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spelling	oai:doaj.org-article:e683b7b344f743398454aefae413e65d2021-12-02T14:27:02ZDynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies10.1038/s41598-020-80510-y2045-2322https://doaj.org/article/e683b7b344f743398454aefae413e65d2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80510-yhttps://doaj.org/toc/2045-2322Abstract The capability for actual measurements—not just simulations—of the dynamical behavior of THz electromagnetic waves, including interactions with prevalent 3D objects, has become increasingly important not only for developments of various THz devices, but also for reliable evaluation of electromagnetic compatibility. We have obtained real-time visualizations of the spatial evolution of THz electromagnetic waves interacting with a single metal micro-helix. After the micro-helix is stimulated by a broadband pico-second pulse of THz electromagnetic waves, two types of anisotropic re-emissions can occur following overall inductive current oscillations in the micro-helix. They propagate in orthogonally crossed directions with different THz frequency spectra. This unique radiative feature can be very useful for the development of a smart antenna with broadband multiplexing/demultiplexing ability and directional adaptivity. In this way, we have demonstrated that our advanced measurement techniques can lead to the development of novel functional THz devices.T. NotakeT. IyodaT. ArikawaK. TanakaC. OtaniH. MinamideNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q T. Notake T. Iyoda T. Arikawa K. Tanaka C. Otani H. Minamide Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies
description	Abstract The capability for actual measurements—not just simulations—of the dynamical behavior of THz electromagnetic waves, including interactions with prevalent 3D objects, has become increasingly important not only for developments of various THz devices, but also for reliable evaluation of electromagnetic compatibility. We have obtained real-time visualizations of the spatial evolution of THz electromagnetic waves interacting with a single metal micro-helix. After the micro-helix is stimulated by a broadband pico-second pulse of THz electromagnetic waves, two types of anisotropic re-emissions can occur following overall inductive current oscillations in the micro-helix. They propagate in orthogonally crossed directions with different THz frequency spectra. This unique radiative feature can be very useful for the development of a smart antenna with broadband multiplexing/demultiplexing ability and directional adaptivity. In this way, we have demonstrated that our advanced measurement techniques can lead to the development of novel functional THz devices.
format	article
author	T. Notake T. Iyoda T. Arikawa K. Tanaka C. Otani H. Minamide
author_facet	T. Notake T. Iyoda T. Arikawa K. Tanaka C. Otani H. Minamide
author_sort	T. Notake
title	Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies
title_short	Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies
title_full	Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies
title_fullStr	Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies
title_full_unstemmed	Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies
title_sort	dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at thz frequencies
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e683b7b344f743398454aefae413e65d
work_keys_str_mv	AT tnotake dynamicalvisualizationofanisotropicelectromagneticreemissionsfromasinglemetalmicrohelixatthzfrequencies AT tiyoda dynamicalvisualizationofanisotropicelectromagneticreemissionsfromasinglemetalmicrohelixatthzfrequencies AT tarikawa dynamicalvisualizationofanisotropicelectromagneticreemissionsfromasinglemetalmicrohelixatthzfrequencies AT ktanaka dynamicalvisualizationofanisotropicelectromagneticreemissionsfromasinglemetalmicrohelixatthzfrequencies AT cotani dynamicalvisualizationofanisotropicelectromagneticreemissionsfromasinglemetalmicrohelixatthzfrequencies AT hminamide dynamicalvisualizationofanisotropicelectromagneticreemissionsfromasinglemetalmicrohelixatthzfrequencies
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Dynamical visualization of anisotropic electromagnetic re-emissions from a single metal micro-helix at THz frequencies

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