Dynamically switchable polarization-independent and broadband metasurface perfect absorber in the visible and near-infrared spectra regime
An electrically tunable absorber in the visible (Vis) and near-infrared (NIR) regime is theoretically investigated. The absorber is composed of aluminum (Al)-indium tin oxide (ITO) composite square pillars on top of thin dielectric layer and Al substrate. Significant tuning of absorption with modula...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2018-12-01
|
| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379718319880 |
| _version_ | 1819274116655480832 |
|---|---|
| author | Peng Zhou Gaige Zheng Fenglin Xian Linhua Xu |
| author_facet | Peng Zhou Gaige Zheng Fenglin Xian Linhua Xu |
| author_sort | Peng Zhou |
| collection | DOAJ |
| description | An electrically tunable absorber in the visible (Vis) and near-infrared (NIR) regime is theoretically investigated. The absorber is composed of aluminum (Al)-indium tin oxide (ITO) composite square pillars on top of thin dielectric layer and Al substrate. Significant tuning of absorption with modulation ratio of 86% can be achieved. The modulation ratio above 75% can be maintained from 1427 to 1795 nm and over 90% absorbance at the NIR regime from 1500 to 1800 nm can also be achieved. The symmetry of the absorber eliminates the polarization dependence and the near unity absorption efficiency can be maintained by incidence angles up to 70°. The presented method will enhance the functionality of absorber and has the potential for the applications that require active control over light absorption. Keywords: Indium tin oxide (ITO), Perfect absorption, Electrically tunable |
| first_indexed | 2024-12-23T23:03:19Z |
| format | Article |
| id | doaj.art-0b41f93ab61a457ba9bc1e625375e0e5 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-23T23:03:19Z |
| publishDate | 2018-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-0b41f93ab61a457ba9bc1e625375e0e52022-12-21T17:26:52ZengElsevierResults in Physics2211-37972018-12-0111278282Dynamically switchable polarization-independent and broadband metasurface perfect absorber in the visible and near-infrared spectra regimePeng Zhou0Gaige Zheng1Fenglin Xian2Linhua Xu3Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaJiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China; Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology (CICAEET), Nanjing University of Information Science & Technology, Nanjing 210044, China; Corresponding author at: Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China.Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaJiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaAn electrically tunable absorber in the visible (Vis) and near-infrared (NIR) regime is theoretically investigated. The absorber is composed of aluminum (Al)-indium tin oxide (ITO) composite square pillars on top of thin dielectric layer and Al substrate. Significant tuning of absorption with modulation ratio of 86% can be achieved. The modulation ratio above 75% can be maintained from 1427 to 1795 nm and over 90% absorbance at the NIR regime from 1500 to 1800 nm can also be achieved. The symmetry of the absorber eliminates the polarization dependence and the near unity absorption efficiency can be maintained by incidence angles up to 70°. The presented method will enhance the functionality of absorber and has the potential for the applications that require active control over light absorption. Keywords: Indium tin oxide (ITO), Perfect absorption, Electrically tunablehttp://www.sciencedirect.com/science/article/pii/S2211379718319880 |
| spellingShingle | Peng Zhou Gaige Zheng Fenglin Xian Linhua Xu Dynamically switchable polarization-independent and broadband metasurface perfect absorber in the visible and near-infrared spectra regime Results in Physics |
| title | Dynamically switchable polarization-independent and broadband metasurface perfect absorber in the visible and near-infrared spectra regime |
| title_full | Dynamically switchable polarization-independent and broadband metasurface perfect absorber in the visible and near-infrared spectra regime |
| title_fullStr | Dynamically switchable polarization-independent and broadband metasurface perfect absorber in the visible and near-infrared spectra regime |
| title_full_unstemmed | Dynamically switchable polarization-independent and broadband metasurface perfect absorber in the visible and near-infrared spectra regime |
| title_short | Dynamically switchable polarization-independent and broadband metasurface perfect absorber in the visible and near-infrared spectra regime |
| title_sort | dynamically switchable polarization independent and broadband metasurface perfect absorber in the visible and near infrared spectra regime |
| url | http://www.sciencedirect.com/science/article/pii/S2211379718319880 |
| work_keys_str_mv | AT pengzhou dynamicallyswitchablepolarizationindependentandbroadbandmetasurfaceperfectabsorberinthevisibleandnearinfraredspectraregime AT gaigezheng dynamicallyswitchablepolarizationindependentandbroadbandmetasurfaceperfectabsorberinthevisibleandnearinfraredspectraregime AT fenglinxian dynamicallyswitchablepolarizationindependentandbroadbandmetasurfaceperfectabsorberinthevisibleandnearinfraredspectraregime AT linhuaxu dynamicallyswitchablepolarizationindependentandbroadbandmetasurfaceperfectabsorberinthevisibleandnearinfraredspectraregime |