Ultrathin broadband metasurface-based absorber comprised of tungsten nanowires
An ultrathin broadband metasurface-based absorber, comprised of tungsten nanowires, was studied under the normal and oblique incidence of transverse electric (TE) and transverse magnetic (TM) waves. The effect of geometrical parameters on the absorption spectra was investigated through the surface e...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-12-01
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| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221137972031929X |
| _version_ | 1828961227120836608 |
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| author | R.M.H. Bilal M.A. Baqir P.K. Choudhury M.A. Naveed M.M. Ali A.A. Rahim |
| author_facet | R.M.H. Bilal M.A. Baqir P.K. Choudhury M.A. Naveed M.M. Ali A.A. Rahim |
| author_sort | R.M.H. Bilal |
| collection | DOAJ |
| description | An ultrathin broadband metasurface-based absorber, comprised of tungsten nanowires, was studied under the normal and oblique incidence of transverse electric (TE) and transverse magnetic (TM) waves. The effect of geometrical parameters on the absorption spectra was investigated through the surface electric field and power patterns at certain operating wavelengths. The structure was found to exhibit nearly perfect absorption in the ultraviolet (UV) span of ~350–400 nm and ~85% absorptivity in the visible spectral range of ~400–750 nm. The attempt was also made to validate the simulation results with that obtained upon homogenization of the metasurface using the effective medium theory. Further, to optimize the results, the performance of the proposed absorber was analyzed in terms of the figure of merit and operating bandwidth, the highest values of which were obtained to be 95% and 450 nm, respectively. With the viewpoint of achieving relatively wideband absorption, it is expected that the proposed absorber can be effectively used in biosensing, solar cell and thermal emitter applications. |
| first_indexed | 2024-12-14T09:42:36Z |
| format | Article |
| id | doaj.art-2e98deeb2f8e44e987e866469fda5ef3 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-14T09:42:36Z |
| publishDate | 2020-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-2e98deeb2f8e44e987e866469fda5ef32022-12-21T23:07:45ZengElsevierResults in Physics2211-37972020-12-0119103471Ultrathin broadband metasurface-based absorber comprised of tungsten nanowiresR.M.H. Bilal0M.A. Baqir1P.K. Choudhury2M.A. Naveed3M.M. Ali4A.A. Rahim5Faculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, PakistanDepartment of Electrical and Computer Engineering, COMSATS University Islamabad, Sahiwal Campus, PakistanInstitute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, UKM Bangi, 43600 Selangor, Malaysia; Corresponding author.Department of Electronic Engineering, The Islamia University of Bahawalpur, 63100 Bahawalpur, PakistanCentre for Precision Engineering, Material and Manufacturing Research, Institute of Technology, Sligo F91 YW50, IrelandFaculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, PakistanAn ultrathin broadband metasurface-based absorber, comprised of tungsten nanowires, was studied under the normal and oblique incidence of transverse electric (TE) and transverse magnetic (TM) waves. The effect of geometrical parameters on the absorption spectra was investigated through the surface electric field and power patterns at certain operating wavelengths. The structure was found to exhibit nearly perfect absorption in the ultraviolet (UV) span of ~350–400 nm and ~85% absorptivity in the visible spectral range of ~400–750 nm. The attempt was also made to validate the simulation results with that obtained upon homogenization of the metasurface using the effective medium theory. Further, to optimize the results, the performance of the proposed absorber was analyzed in terms of the figure of merit and operating bandwidth, the highest values of which were obtained to be 95% and 450 nm, respectively. With the viewpoint of achieving relatively wideband absorption, it is expected that the proposed absorber can be effectively used in biosensing, solar cell and thermal emitter applications.http://www.sciencedirect.com/science/article/pii/S221137972031929XPerfect absorbersMetamaterialsWide-band absorbersMetasurfaces |
| spellingShingle | R.M.H. Bilal M.A. Baqir P.K. Choudhury M.A. Naveed M.M. Ali A.A. Rahim Ultrathin broadband metasurface-based absorber comprised of tungsten nanowires Results in Physics Perfect absorbers Metamaterials Wide-band absorbers Metasurfaces |
| title | Ultrathin broadband metasurface-based absorber comprised of tungsten nanowires |
| title_full | Ultrathin broadband metasurface-based absorber comprised of tungsten nanowires |
| title_fullStr | Ultrathin broadband metasurface-based absorber comprised of tungsten nanowires |
| title_full_unstemmed | Ultrathin broadband metasurface-based absorber comprised of tungsten nanowires |
| title_short | Ultrathin broadband metasurface-based absorber comprised of tungsten nanowires |
| title_sort | ultrathin broadband metasurface based absorber comprised of tungsten nanowires |
| topic | Perfect absorbers Metamaterials Wide-band absorbers Metasurfaces |
| url | http://www.sciencedirect.com/science/article/pii/S221137972031929X |
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