Browsing by Author "Bakır, Mehmet"
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Metamaterial Sensor for Transformer Oil, and Microfluidics
Bakır, Mehmet; Karaaslan, Muharrem; Karadağ, Faruk; Dalgaç, Şekip; Ünal, Emin; Akgöl, Oğuzhan (Applied Computational Electromagnetics Society (ACES), 2019)Metamaterial sensor which is composed of split square rings to operate in X band for liquid and microfluidics has been proposed in this study. For measurement and simulation, we have designed and manufactured a sample ... -
Metamaterial-based energy harvesting for GSM and satellite communication frequency bands
Bakır, Mehmet; Karaaslan, Muharrem; Karadağ, Faruk; Ünal, Emin; Akgöl, Oğuzhan; Alkurt, Fatih Özkan; Sabah, Cumali (SPIE - Society of Photo-Optical Instrumentation Engineers, 2018)A metamaterial-based energy harvesting structure has been designed and experimentally tested in this study. The proposed structure has square and split ring resonators placed in different angles on the back and front sides ... -
Microfluidic and Fuel Adulteration Sensing by Using Chiral Metamaterial Sensor
Bakır, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Karadağ, Faruk; Alkurt, Fatih Özkan; Altıntaş, Olcay; Dalgaç, Şekip; Sabah, Cumali (The Electrochemical Society, 2018)In this study, Chiral Metamaterial Sensor (CMS), which is designed by utilizing a Split Ring Resonators (SRR) has been employed to reveal the two different types of sensor applications by experimentally and numerically. ... -
Microfluidic sensor applications by using chiral metamaterial
Dalgaç, Şekip; Bakır, Mehmet; Karadağ, Faruk; Karaaslan, Muharrem; Akgöl, Oğuzhan; Ünal, Emin; Sabah, Cumali (World Scientific Publishing Company, 2020)Chiral metamaterial-based sensor is designed for sensing the change in substance ratio of chemical substances when combined with distilled water. These samples have been prepared with 10%, 50% and 90% volume fraction of ... -
Microwave metamaterial absorber for sensing applications
Bakır, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Akgöl, Oğuzhan; Sabah, Cumali (Elsevier, 2017)A metamaterial absorber (MA) based sensor is designed and analysed for various important applications including pressure, temperature, density, and humidity sensing. Material parameters, as well as equivalent circuit model ... -
Microwave power imaging detector based on metamaterial absorber
Alkurt, Fatih Özkan; Altıntaş, Olcay; Bakır, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Karadağ, Faruk; Akgöl, Oğuzhan; Sabah, Cumali (SPIE, 2020)Our paper presents the design, fabrication, and characterization of metamaterial absorber-based microwave imaging detector that is operating in industrial, scientific, and medical (ISM) band. The results reveal that the ... -
Multifunctional metamaterial sensor applications based on chiral nihility
Bakır, Mehmet; Karaaslan, Muharrem; Akgöl, Oğuzhan; Sabah, Cumali (Springer, 2017)In this paper, chiral nihility based pressure, density, temperature and moisture content metamaterial sensor applications are investigated in detail. A "chiral nihility'' medium in which both the permittivity and the ... -
Octagonal Shaped Metamaterial Absorber Based Energy Harvester
Alkurt, Fatih Özkan; Altıntaş, Olcay; Bakır, Mehmet; Tamer, Ahmet; Karadağ, Faruk; Bağmancı, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Akgöl, Oğuzhan (Kaunas University of Technology, 2018)In this study, a novel octagonal shaped metamaterial based broadband absorber is proposed for energy harvesting at WIMAX wireless communication band. The proposal has an absorption of 99.97 % at 5.5 GHz with a bandwidth ... -
Perfect metamaterial absorber-based energy harvesting and sensor applications in the industrial, scientific, and medical band
Bakır, Mehmet; Karaaslan, Muharrem; Dinçer, Furkan; Delihacıoğlu, Kemal; Sabah, Cumali (SPIE-Soc Photo-Optical Instrumentation Engineers, 2015)An electromagnetic (EM) energy harvesting application based on metamaterials is introduced. This application is operating at the the industrial, scientific, and medical band (2.40 GHz), which is especially chosen because ... -
Polarization independent broadband metamaterial absorber for microwave applications
Bağmancı, Mehmet; Akgöl, Oğuzhan; Özaktürk, Melikşah; Karaaslan, Muharrem; Ünal, Emin; Bakır, Mehmet (John Wiley and Sons Inc., 2019)A new polarization independent broadband metamaterial absorber (MA) structure based on split ring resonators which are loaded with lumped elements and via connection lines is proposed. The designed structure shows a perfect ... -
A polarization-insensitive triple-band perfect metamaterial absorber incorporating ZnSe for terahertz sensing
Abdulkarim, Yadgar I.; Alkurt, Fatih Özkan; Bakır, Mehmet; Awl, Halgurd N.; Muhammadsharif, Fahmi F.; Karaaslan, Muharrem; Appasani, Bhargav; Al-Badri, Khalid Saeed Lateef; Zhu, Yuanyuan; Dong, Jian (Institute of Physics, 2022)In this work, a triple-band polarization-insensitive metamaterial structure with perfect absorption is proposed by incorporating a zinc selenide (ZnSe) spacer. The structure was optimally designed by varying the type of ... -
Sensory applications of resonator based metamaterial absorber
Bakır, Mehmet; Karaaslan, Muharrem; Akgöl, Oğuzhan; Altıntaş, Olcay; Ünal, Emin; Sabah, Cumali (Elsevier GmbH, 2018)Metamaterials are attractive media for scientific society for their potential multi-functional and a wide range of applications due to their unusual electromagnetic properties. In this paper, we present several important ... -
Simulation and lithographic fabrication of a triple band terahertz metamaterial absorber coated on flexible polyethylene terephthalate substrate
Abdulkarim, Yadgar I.; Xiao, Meiyu; Awl, Halgurd N.; Muhammadsharif, Fahmi F.; Lang, Tingting; Saeed, Salah Raza; Alkurt, Fatih Özkan; Bakır, Mehmet; Karaaslan, Muharrem; Dong, Jian (The Optical Society, 2022)A triple band metamaterial absorber in the terahertz range, incorporating a three closed circle ring resonator, was designed and fabricated on flexible polyethylene terephthalate “PET” substrate. The proposed design was ... -
Solar energy harvesting with ultra-broadband metamaterial absorber
Bağmancı, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Akgöl, Oğuzhan; Bakır, Mehmet; Sabah, Cumali (World Scientific Publishing Co. Pte Ltd, 2019)In this study, a novel metamaterial absorber (MA) is designed and numerically demonstrated for solar energy harvesting. The structure is composed of three layers with different thicknesses. The interactions of three layers ... -
A Symmetrical Terahertz Triple-Band Metamaterial Absorber Using a Four-Capacitance Loaded Complementary Circular Split Ring Resonator and an Ultra-Thin ZnSe Substrate
Abdulkarim, Yadgar, I.; Alkurt, Fatih Özkan; Awl, Halgurd N.; Altıntaş, Olcay; Muhammadsharif, Fahmi F.; Appasani, Bhargav; Bakır, Mehmet; Karaaslan, Muharrem; Taouzari, Mohamed; Dong, Jian (MDPI, 2022)In this research work, a symmetrical four-capacitance loaded complementary circular split ring resonator is proposed, which uses an ultra-thin Zinc Selenide (ZnSe) substrate to realize a low-profile triple-band metamaterial ... -
A thermally stable and polarization insensitive square-shaped water metamaterial with ultra-broadband absorption
Abdulkarim, Yadgar I.; Awl, Halgurd N.; Alkurt, Fatih Özkan; Muhammadsharif, Fahmi F.; Saeed, Salah Raza; Karaaslan, Muharrem; Bakır, Mehmet; Luo, Heng (Elsevier, 2021)In this paper, square-shaped water metamaterial is reported, which can be used as a perfect absorber for ultra-broadband absorption in the microwave frequency range. Computer Simulation Technology (CST) software was used ... -
Tunable energy harvesting on UHF bands especially for GSM frequencies
Bakır, Mehmet; Karaaslan, Muharrem; Altıntaş, Olcay; Bağmancı, Mehmet; Akdoğan, Volkan; Temurtaş, Feyzullah (Cambridge University Press, 2018)Metamaterial-based energy harvesting structures operating at GSM goo and GSM 1800 frequency bands have been proposed. The basic structure is composed of four nested U-shaped elements on the front and back side of the ... -
Tunable perfect metamaterial absorber and sensor applications
Bakır, Mehmet; Karaaslan, Muharrem; Dinçer, Furkan; Delihacıoğlu, Kemal; Sabah, Cumali (Springer, 2016)Operation frequencies of traditional metamaterial absorbers are fixed meaning that it is not possible to change that frequency after the fabrication. Therefore, more studies are focused on the design of Tunable metamaterial ... -
Tunable perfect metamaterial absorber design using the golden ratio and energy harvesting and sensor applications
Ünal, Emin; Dinçer, Furkan; Tetik, Erkan; Karaaslan, Muharrem; Bakır, Mehmet; Sabah, Cumali (Springer, 2015)We present the design, characterization, theoretical and experimental verification of a tunable perfect metamaterial absorber (MA) based electromagnetic (EM) energy harvesting and sensor application. We have used the golden ... -
U-shaped frequency selective surfaces for single- and dual-band applications together with absorber and sensor configurations
Bakır, Mehmet; Delihacıoğlu, Kemal; Karaaslan, Muharrem; Dinçer, Furkan; Sabah, Cumali (Institution of Engineering and Technology, 2016)In this study, the frequency selective surface (FSS), absorbance and sensing applications of new unit cells comprised of single, double and quad U-shaped metallic elements are numerically and experimentally investigated. ...
