Independently tunable dual-band perfect absorber based on graphene at mid-infrared frequencies
Abstract
We design a dual-band absorber formed by combining two cross-shaped metallic resonators of different sizes within a super-unit-cell arranged in mirror symmetry. Simulations indicate that absorption efficiencies greater than 99% can be achieved at two different frequencies under normal incidence. We also employ a design scheme with graphene integration, which allows independent tuning of individual absorption frequencies by electrostatically changing the Fermi energy of the graphene layer. High absorbance is maintained over a wide incident angle range up to 50 degrees for both TE and TM polarizations. Thus, it enables a promising way to design electrically tunable absorbers, which may contribute toward the realization of frequency selective detectors for sensing applications.
- Authors:
-
- Univ. of Science and Technology, Shandong (China); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Science and Technology, Shandong (China)
- China Academy of Engineering Physics, Mianyang (China)
- Oklahoma State Univ., Stillwater, OK (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1236005
- Report Number(s):
- LA-UR-15-24541
Journal ID: ISSN 2045-2322; srep18463
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 5; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; metamaterial; graphene; modulator
Citation Formats
Zhang, Yuping, Li, Tongtong, Chen, Qi, Zhang, Huiyun, O’Hara, John F., Abele, Ethan, Taylor, Antoinette J., Chen, Hou-Tong, and Azad, Abul K. Independently tunable dual-band perfect absorber based on graphene at mid-infrared frequencies. United States: N. p., 2015.
Web. doi:10.1038/srep18463.
Zhang, Yuping, Li, Tongtong, Chen, Qi, Zhang, Huiyun, O’Hara, John F., Abele, Ethan, Taylor, Antoinette J., Chen, Hou-Tong, & Azad, Abul K. Independently tunable dual-band perfect absorber based on graphene at mid-infrared frequencies. United States. https://doi.org/10.1038/srep18463
Zhang, Yuping, Li, Tongtong, Chen, Qi, Zhang, Huiyun, O’Hara, John F., Abele, Ethan, Taylor, Antoinette J., Chen, Hou-Tong, and Azad, Abul K. Tue .
"Independently tunable dual-band perfect absorber based on graphene at mid-infrared frequencies". United States. https://doi.org/10.1038/srep18463. https://www.osti.gov/servlets/purl/1236005.
@article{osti_1236005,
title = {Independently tunable dual-band perfect absorber based on graphene at mid-infrared frequencies},
author = {Zhang, Yuping and Li, Tongtong and Chen, Qi and Zhang, Huiyun and O’Hara, John F. and Abele, Ethan and Taylor, Antoinette J. and Chen, Hou-Tong and Azad, Abul K.},
abstractNote = {We design a dual-band absorber formed by combining two cross-shaped metallic resonators of different sizes within a super-unit-cell arranged in mirror symmetry. Simulations indicate that absorption efficiencies greater than 99% can be achieved at two different frequencies under normal incidence. We also employ a design scheme with graphene integration, which allows independent tuning of individual absorption frequencies by electrostatically changing the Fermi energy of the graphene layer. High absorbance is maintained over a wide incident angle range up to 50 degrees for both TE and TM polarizations. Thus, it enables a promising way to design electrically tunable absorbers, which may contribute toward the realization of frequency selective detectors for sensing applications.},
doi = {10.1038/srep18463},
journal = {Scientific Reports},
number = ,
volume = 5,
place = {United States},
year = {Tue Dec 22 00:00:00 EST 2015},
month = {Tue Dec 22 00:00:00 EST 2015}
}
Web of Science
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