Metamaterial Absorber Comprised of Butt-Facing U-Shaped Nanoengineered Gold Metasurface
The paper reports spectral features of the absorbed electromagnetic (EM) waves in a new kind of multilayered plasmonic metamaterial thin film comprised of homogenous layers of copper and silicon as the bottom and the middle sections (of the thin film), respectively, and the inhomogeneous U-shaped na...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-06-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/9/6/451 |
| _version_ | 1828151996948938752 |
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| author | Masih Ghasemi Pankaj Kumar Choudhury |
| author_facet | Masih Ghasemi Pankaj Kumar Choudhury |
| author_sort | Masih Ghasemi |
| collection | DOAJ |
| description | The paper reports spectral features of the absorbed electromagnetic (EM) waves in a new kind of multilayered plasmonic metamaterial thin film comprised of homogenous layers of copper and silicon as the bottom and the middle sections (of the thin film), respectively, and the inhomogeneous U-shaped nanoengineered gold layer as the top. Each unit cell of the top metasurface consists of one upside and one downside U-shaped (butt-facing) structure. The absorbance of EM waves is simulated in the wavelength range of 200−1500 nm under different incidence angles considering the wave as being transmitted from the metasurface side. The low-order TE and TM modes are taken into account for the estimation of wave absorbance under varying metasurfaces as well as silicon layer thicknesses. It has been found that the nanoengineered gold layer causes higher confinement of power in silicon, which can be further controlled by suitably adjusting its thickness. Further, the increased thickness of metasurface results in shifts in absorption peak along with the existence of dual-absorption maxima in the visible spectral range. The obtained spectral features reveal possible application of the proposed structure as a prudent metamaterial absorber, which can be exploited for EM heating purposes. |
| first_indexed | 2024-04-11T22:05:38Z |
| format | Article |
| id | doaj.art-ce8472702abc4cfebfe8d597e62c4696 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T22:05:38Z |
| publishDate | 2016-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ce8472702abc4cfebfe8d597e62c46962022-12-22T04:00:45ZengMDPI AGEnergies1996-10732016-06-019645110.3390/en9060451en9060451Metamaterial Absorber Comprised of Butt-Facing U-Shaped Nanoengineered Gold MetasurfaceMasih Ghasemi0Pankaj Kumar Choudhury1Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, MalaysiaInstitute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, MalaysiaThe paper reports spectral features of the absorbed electromagnetic (EM) waves in a new kind of multilayered plasmonic metamaterial thin film comprised of homogenous layers of copper and silicon as the bottom and the middle sections (of the thin film), respectively, and the inhomogeneous U-shaped nanoengineered gold layer as the top. Each unit cell of the top metasurface consists of one upside and one downside U-shaped (butt-facing) structure. The absorbance of EM waves is simulated in the wavelength range of 200−1500 nm under different incidence angles considering the wave as being transmitted from the metasurface side. The low-order TE and TM modes are taken into account for the estimation of wave absorbance under varying metasurfaces as well as silicon layer thicknesses. It has been found that the nanoengineered gold layer causes higher confinement of power in silicon, which can be further controlled by suitably adjusting its thickness. Further, the increased thickness of metasurface results in shifts in absorption peak along with the existence of dual-absorption maxima in the visible spectral range. The obtained spectral features reveal possible application of the proposed structure as a prudent metamaterial absorber, which can be exploited for EM heating purposes.http://www.mdpi.com/1996-1073/9/6/451metamaterial absorbersnanostructured mediumsplasmonic resonatorscomplex optical mediums |
| spellingShingle | Masih Ghasemi Pankaj Kumar Choudhury Metamaterial Absorber Comprised of Butt-Facing U-Shaped Nanoengineered Gold Metasurface Energies metamaterial absorbers nanostructured mediums plasmonic resonators complex optical mediums |
| title | Metamaterial Absorber Comprised of Butt-Facing U-Shaped Nanoengineered Gold Metasurface |
| title_full | Metamaterial Absorber Comprised of Butt-Facing U-Shaped Nanoengineered Gold Metasurface |
| title_fullStr | Metamaterial Absorber Comprised of Butt-Facing U-Shaped Nanoengineered Gold Metasurface |
| title_full_unstemmed | Metamaterial Absorber Comprised of Butt-Facing U-Shaped Nanoengineered Gold Metasurface |
| title_short | Metamaterial Absorber Comprised of Butt-Facing U-Shaped Nanoengineered Gold Metasurface |
| title_sort | metamaterial absorber comprised of butt facing u shaped nanoengineered gold metasurface |
| topic | metamaterial absorbers nanostructured mediums plasmonic resonators complex optical mediums |
| url | http://www.mdpi.com/1996-1073/9/6/451 |
| work_keys_str_mv | AT masihghasemi metamaterialabsorbercomprisedofbuttfacingushapednanoengineeredgoldmetasurface AT pankajkumarchoudhury metamaterialabsorbercomprisedofbuttfacingushapednanoengineeredgoldmetasurface |