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Experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process
We design and demonstrate a flexible, ultrathin and double-sided metamaterial perfect absorber (MPA) at 2.39 terahertz (THz), which enables excellent light absorbance under incidences from two opposite sides. Herein, the MPA is fabricated on a λ(0)/10.1-thick flexible polyethylene terephthalate subs...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4686993/ https://www.ncbi.nlm.nih.gov/pubmed/26690846 http://dx.doi.org/10.1038/srep18605 |
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author | Huang, Tsung-Yu Tseng, Ching-Wei Yeh, Ting-Tso Yeh, Tien-Tien Luo, Chih-Wei Akalin, Tahsin Yen, Ta-Jen |
author_facet | Huang, Tsung-Yu Tseng, Ching-Wei Yeh, Ting-Tso Yeh, Tien-Tien Luo, Chih-Wei Akalin, Tahsin Yen, Ta-Jen |
author_sort | Huang, Tsung-Yu |
collection | PubMed |
description | We design and demonstrate a flexible, ultrathin and double-sided metamaterial perfect absorber (MPA) at 2.39 terahertz (THz), which enables excellent light absorbance under incidences from two opposite sides. Herein, the MPA is fabricated on a λ(0)/10.1-thick flexible polyethylene terephthalate substrate of ε(r) = 2.75 × (1 + 0.12i), sandwiched by two identical randomized metallic patterns by our stochastic design process. Such an MPA provides tailored permittivity and permeability to approach the impedance of free space for minimizing reflectance and a great imaginary part of the refractive index for reducing transmittance and finally results in high absorbance. Both experimental measurement and numerical simulation are in a good agreement. The flexible, ultrathin and double-sided MPA significantly differs from traditional quarter-wavelength absorbers and other single-sided perfect absorbers, paving a way toward practical THz applications in thermal emission, sensing and imaging, communications, stealth technique, and even energy harvesting. |
format | Online Article Text |
id | pubmed-4686993 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46869932015-12-31 Experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process Huang, Tsung-Yu Tseng, Ching-Wei Yeh, Ting-Tso Yeh, Tien-Tien Luo, Chih-Wei Akalin, Tahsin Yen, Ta-Jen Sci Rep Article We design and demonstrate a flexible, ultrathin and double-sided metamaterial perfect absorber (MPA) at 2.39 terahertz (THz), which enables excellent light absorbance under incidences from two opposite sides. Herein, the MPA is fabricated on a λ(0)/10.1-thick flexible polyethylene terephthalate substrate of ε(r) = 2.75 × (1 + 0.12i), sandwiched by two identical randomized metallic patterns by our stochastic design process. Such an MPA provides tailored permittivity and permeability to approach the impedance of free space for minimizing reflectance and a great imaginary part of the refractive index for reducing transmittance and finally results in high absorbance. Both experimental measurement and numerical simulation are in a good agreement. The flexible, ultrathin and double-sided MPA significantly differs from traditional quarter-wavelength absorbers and other single-sided perfect absorbers, paving a way toward practical THz applications in thermal emission, sensing and imaging, communications, stealth technique, and even energy harvesting. Nature Publishing Group 2015-12-22 /pmc/articles/PMC4686993/ /pubmed/26690846 http://dx.doi.org/10.1038/srep18605 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Huang, Tsung-Yu Tseng, Ching-Wei Yeh, Ting-Tso Yeh, Tien-Tien Luo, Chih-Wei Akalin, Tahsin Yen, Ta-Jen Experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process |
title | Experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process |
title_full | Experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process |
title_fullStr | Experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process |
title_full_unstemmed | Experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process |
title_short | Experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process |
title_sort | experimental realization of ultrathin, double-sided metamaterial perfect absorber at terahertz gap through stochastic design process |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4686993/ https://www.ncbi.nlm.nih.gov/pubmed/26690846 http://dx.doi.org/10.1038/srep18605 |
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