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year 28, Issue 2 (ICOP & ICPET 2022 2022)
ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 241-244 |
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Dadkhah Tehrani* A, Siadati S M, Baghdadi M, Salmani Shik S, Majles Ara M H. Design and Simulation of Graphene-based Terahertz Waves Absorbers. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :241-244
URL: http://opsi.ir/article-1-2524-en.html
URL: http://opsi.ir/article-1-2524-en.html
Alireza Dadkhah Tehrani* * 
1, Seyed Mahdi Siadati2 , Mohadeseh Baghdadi2 , Somaieh Salmani Shik2 , Mohammad Hossin Majles Ara2
1, Seyed Mahdi Siadati2 , Mohadeseh Baghdadi2 , Somaieh Salmani Shik2 , Mohammad Hossin Majles Ara2
1- kharazmi University
2- Kharazmi University
2- Kharazmi University
Abstract: (647 Views)
In this paper, four metamaterial adsorbent structures in terahertz frequency range are designed and simulated consisting of two types of monolayer graphene pattern on the dielectric surface with a refractive index of 3.5 and a gold substrate. In this simulation, the intensity of the absorption spectrum is increased by changing the Fermi level of graphene. Also, the influence of geometric parameters on the structure of attractions with different patterns has been investigated. The 99% absorption peak at 70 μm is significant in two types of structures. The distribution of electric field in the structures indicates the stimulation and amplification of graphene surface plasmons at this wavelength, which is the main factor in maximum absorption. Suggested adsorbents can be used in sensors and detectors in the terahertz range.
Type of Study: Experimental |
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