Absorber and sensor applications of complimentary H-shaped fishnet metamaterial for sub-terahertz frequency region

Date

2019-01-01

Author

Faruk, Ahmet
Sabah, Cumali

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

113
views

0
downloads

The progress in the technology of manufacturing new materials increases the usage of Terahertz (THz) region, which is considered as the last explored region of electromagnetic spectrum. In biological, chemical, sensing and detecting applications THz region is started to be used widely. We proposed a unique fishnet metamaterial (MTM) absorber and metasensor that can be used to detect and characterize new materials which are produced for THz region. First of all, the reflection and absorption characteristics of fishnet MTM were analyzed. Perfect absorption was achieved by 97.3% absorption rate and with assisting from electric field and surface current distributions we explained the electromagnetic theory behind the frequency resonances. For sensory application, the material that is going to be detected was added as a single and double overlayer (OL) to proposed fishnet MTM and fishnet MTM absorber sensor. The shifts in the resonant frequencies were observed for the change in permittivity and thicknesses of the OL materials. From the analysis of resonant shifts it is proved that the proposed structure shows high sensing ability in THz region.

Subject Keywords

Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials

URI

https://hdl.handle.net/11511/64370

Journal

OPTIK

DOI

https://doi.org/10.1016/j.ijleo.2018.09.145

Collections

Engineering, Article

Suggestions

OpenMETU
Core

Plasmonic resonances in sub-terahertz fishnet metamaterial based on complementary hexagonal resonator Yuksek, Yahya; Demir, S. Mahircan; Sabah, Cumali (Elsevier BV, 2019-01-01) Exploration of the perfect combination between metamaterials (MTMs) and plasmonics has paved the way of the new innovations in electromagnetic and communication engineering, especially in sub-THz spectroscopy. In order to contribute to such developments, plasmonic resonances in sub-THz fishnet MTM on the basis of complementary hexagonal resonator structure is investigated in this paper. The design, in which method of removing hexagonal structure is applied, has been performed based on finite simulation tech...
Optical Modulation With Silicon Microspheres Yüce, Emre; Serpenguzel, Ali (Institute of Electrical and Electronics Engineers (IEEE), 2009-10-15) In this letter, a silicon microsphere coupled to a silica optical fiber half coupler has been characterized for electrooptical modulation in the L-band at 1.55 mu m. Electrooptical modulation of the transmitted and the 90 degrees elastic scattered signals for both the TE and the TM polarizations of the microsphere resonances has been observed.
Current transport mechanisms in low resistive CdS thin films Günal, İbrahim; Parlak, Mehmet (Springer Science and Business Media LLC, 1997-02-01) The current transport mechanisms in polycrystalline CdS thin films have been studied as a function of temperature over the temperature range 20-230 K. Conductivity data for the high temperature region has been analysed using Seto's model of thermionic emission. At intermediate temperatures it was found that thermionic emission and tunnelling of carriers through the potential barrier both contribute to the conductivity. Below 100 K Mott's hopping process appears to be the predominant conduction mechanism.
Terahertz metamaterial absorber comprised of H-shaped resonator within split-square ring and its sensory application Faruk, Ahmet; Sabah, Cumali (Elsevier BV, 2019-09-01) Terahertz region has become very attractive for new applications however, the materials that work in this region are very limited. Within the aim of providing a new instrument that can be used in this field, we designed and analyzed a new metamaterial (MTM) absorber and MTM absorber sensor for Sub-Terahertz region. As a first step, the structure was designed and the electromagnetic response of the design was analyzed. The perfect absorption with 99.9% absorption rate was achieved for the resonant frequency ...
Solvent selection for fabrication of low temperature ZnO electron transport layer in perovskite solar cells Ahmadi, S. Hamideh; Ghaffarkani, Mashhood; Ameri, Mohsen; Safari, Nasser; Mohajerani, Ezeddin (Elsevier BV, 2020-08-01) Zinc Oxide (ZnO) with an easy synthesis method, low processing temperature, and high charge carrier mobility has been considered as a proper electron transport layer (ETL) for perovskite solar cells. Herein, we investigate the effect of the most common solvents for the preparation of ZnO and investigate their application as ETL for PSC. ZnO layers were prepared from three different solvents 2-methoxyethanol (2ME), isopropyl alcohol (IPA) and ethanol. A complete investigation of the structural, morphological...

Citation Formats

A. Faruk and C. Sabah, “Absorber and sensor applications of complimentary H-shaped fishnet metamaterial for sub-terahertz frequency region,” OPTIK, pp. 64–70, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64370.