Wideband long wave infrared metamaterial absorbers based on silicon nitride

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dc.contributor.authorÜstün, Kadir
dc.contributor.authorTurhan Sayan, Gönül
dc.date.accessioned2019-05-10T09:38:54Z
dc.date.available2019-05-10T09:38:54Z
dc.date.issued2016
dc.departmentHitit Üniversitesi, Mühendislik Fakültesi, Elektrik Elektronik Mühendisliği Bölümü
dc.description.abstractIn this paper, we present silicon nitride metamaterial absorber designs that accomplish large bandwidth and high absorption in the long wave infrared (LWIR) region. These designs are based on the metal-insulator-metal topology, insulator (silicon nitride), and the top metal (aluminum) layers are optimized to obtain high absorptance values in large bandwidths, for three different silicon nitride based absorber structures. The absorption spectrum of the final design reaches absorptance values above 90% in the wavelength interval between 8.07 ?m and 11.97 ?m, and above 80% in the wavelength interval between 7.9 ?m and 14 ?m, in the case of normal incidence. The difficulty in the design process of such absorbers stems from the highly dispersive behavior of silicon nitride in the LWIR region. On the other hand, silicon nitride is a widely used material in microbolometers, and accomplishing wide band absorption in silicon nitride is crucial in this regard. Therefore, this study will pave the way for more efficient infrared imaging devices, which are crucial for defense and security systems. Additionally, such designs may also find applications in thermal emitters. © 2016 Author(s).
dc.identifier.citationÜstün, K., & Turhan-Sayan, G. (2016). Wideband long wave infrared metamaterial absorbers based on silicon nitride. Journal of Applied Physics, 120(20), 203101.
dc.identifier.doi10.1063/1.4968014
dc.identifier.issn0021-8979
dc.identifier.issue20en_US
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1063/1.4968014
dc.identifier.urihttps://hdl.handle.net/11491/543
dc.identifier.volume120en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmerican Institute of Physics Inc.
dc.relation.ispartofJournal of Applied Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subject[Belirlenecek]en_US
dc.titleWideband long wave infrared metamaterial absorbers based on silicon nitride
dc.typeArticle

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