Yazar "Sabah, Cumali" için listeleme
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90° degrees Polarization rotator and antireflector using meanderline chiral metamaterials: Analytical and numerical approach
Gönülal, Şengül; Karaaslan, Muharrem; Ünal, Emin; Delihacıoğlu, Kemal; Dinçer, Furkan; Tetik, Erkan; Sabah, Cumali (Elsevier GmbH, 2015)We demonstrate theoretically and numerically a chiral slab that can exhibit optical activity, circular dichroism, and antireflection in detail. Copolar and crosspolar transmitted and reflected waves depending on permittivity, ... -
Akaryakıt sektörü için metamalzeme tabanlı sensör tasarımı ve uygulaması
Dinçer, Furkan; Delihacıoğlu, Kemal; Tümkaya, Mehmet Ali; Karaaslan, Muharrem; Sabah, Cumali (Kırıkkale Üniversitesi, 2017)Metamalzemelerin sinyal emilimi, anten, sensör, süper lens vb. birçok uygulama alanı bulunmaktadır. Bu çalışmada ise metamalzemelerin sensör alanındaki önemli uygulamalarından birine değinilmiştir. Bu uygulama, akaryakıt ... -
Antenna-based microwave absorber for imaging in the frequencies of 1.8, 2.45, and 5.8 GHz
Alkurt, Fatih Özkan; Altıntaş, Olcay; Atcı, Ahmet; Bakır, Mehmet; Ünal, Emin; Akgöl, Oğuzhan; Delihacıoğlu, Kemal; Karaaslan, Muharrem; Sabah, Cumali (The International Society for Optics and Photonics (SPIE), 2018)We propose a microwave imaging structure with GSM, ISM, Wi-Fi, and WiMAX operating frequencies at 1.80, 2.45, and 5.80 GHz, respectively. The suggested structure is based on a microwave antenna-inspired absorber with ... -
Broad band metamaterial absorber based on wheel resonators with lumped elements for microwave energy harvesting
Karaaslan, Muharrem; Bağmancı, Mehmet; Ünal, Emin; Akgöl, Oğuzhan; Altıntaş, Olcay; Sabah, Cumali (Springer, 2018)A new metamaterial absorber structure is designed and characterized both numerically and experimentally for microwave energy harvesting applications. The proposed structure includes four wheel resonators with different ... -
Broad-band polarization-independent metamaterial absorber for solar energy harvesting applications
Bağmancı, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Akgöl, Oğuzhan; Karadağ, Faruk; Sabah, Cumali (Elsevier, 2017)A novel broad-band polarization-independent with wide-angle metamaterial absorber(MA) is investigated and demonstrated for solar energy harvesting applications. The proposed MA is composed of two metal layers which have ... -
Characterization of chiral metamaterial sensor with high sensitivity
Dalgaç, Şekip; Bakır, Mehmet; Karadağ, Faruk; Ünal, Emin; Karaaslan, Muharrem; Sabah, Cumali (Elsevier GmbH, 2020)In this study, a chiral metamaterial sensor applications are created by placing asymmetrically two meander line front and back side of the substrate layer. Characterization of the dielectric constant, thickness and loss ... -
A Comprehensive Study on Fuel Adulteration Sensing by Using Triple Ring Resonator Type Metamaterial
Bakır, Mehmet; Dalgaç, Şekip; Karaaslan, Muharrem; Karadağ, Faruk; Akgöl, Oğuzhan; Ünal, Emin; Depci, Tolga; Sabah, Cumali (Electrochemical Society Inc., 2019)A novel shaped metamaterial sensor application which is designed to operate in X band is proposed. A new sample holder for easy operation is designed and placed just behind the proposed structure in X band. Since the ... -
Design and study of a metamaterial based sensor for the application of liquid chemicals detection
Abdulkarim, Yadgar I.; Deng, Lianwen; Luo, Heng; Huang, Shengxiang; Karaaslan, Muharrem; Altıntaş, Olcay; Bakır, Mehmet; Muhammadsharif, Fahmi F.; Awl, Halgurd N.; Sabah, Cumali; Al-badri, Khalid Saeed Lateef (Elsevier, 2021)The detection of chemical samples having close dielectric response is a big challenge as the detection principle is driven by the variations in the dielectric parameters of the investigated samples. In the current work, a ... -
Design of a linear to circular polarization converter integrated into a concrete construction for radome applications
Öztürk, Murat; Sevim, Umur Korkut; Altıntaş, Olcay; Ünal, Emin; Akgöl, Oğuzhan; Karaaslan, Muharrem; Sabah, Cumali (Cambridge University Press, 2021)In this paper, we present a linear to circular polarization converter integrated in a concrete structure to eliminate signal transmission problem originated from the concrete buildings in microwave regime. Two polarization ... -
Design of a wide band metasurface as a linear to circular polarization converter
Altıntaş, Olcay; Ünal, Emin; Akgöl, Oğuzhan; Karaaslan, Muharrem; Karadağ, Faruk; Sabah, Cumali (World Scientific Publishing Co. Pte Ltd, 2017)In this paper, we present a wide band metasurface (MS) polarization converter which converts a linearly polarized signal to a right-handed or left-handed circularly polarized signal both numerically and experimentally. The ... -
Design of metasurface polarization converter from linearly polarized signal to circularly polarized signal
Akgöl, Oğuzhan; Ünal, Emin; Altıntaş, Olcay; Karaaslan, Muharrem; Karadağ, Faruk; Sabah, Cumali (Elsevier GmbH, 2018)In this study, we both numerically and experimentally present a metasurface (MS) polarization converter to transform linearly polarized signal into circularly polarized one. The unit cell consists of two rectangular metallic ... -
Dynamic and tunable chiral metamaterials with wideband constant chirality over a certain frequency band
Dinçer, Furkan; Karaaslan, Muharrem; Akgöl, Oğuzhan; Ünal, Emin; Sabah, Cumali (Elsevier GmbH, 2015)We present numerically and experimentally a dynamic chiral metamaterial (MTM) that creates strong optical activity and circular dichroism. The proposed tunable structure has a very simple and more efficient configuration ... -
Electromagnetic energy harvesting and density sensor application based on perfect metamaterial absorber
Bakır, Mehmet; Karaaslan, Muharrem; Dinçer, Furkan; Akgöl, Oğuzhan; Sabah, Cumali (World Scientific Publishing Co. Pte Ltd, 2016)The proposed study presents an electromagnetic (EM) energy harvesting and density sensor application based on a perfect metamaterial absorber (MA) in microwave frequency regime. In order to verify the absorption behavior ... -
Electromagnetic simulations of polarization-insensitive and wide-angle multiband metamaterial absorber by incorporating double asterisk resonator
Abdulkarim, Yadgar I.; Deng, Lianwen; Luo, Heng; Huang, Shengxiang; He, Longhui; Li, Yuhan; Muhammadsharif, Fahmi F.; Altıntaş, Olcay; Sabah, Cumali; Karaaslan, Muharrem (Indian Acad Sciences, 2020)A novel multiband metamaterial absorber (MTMA) is proposed which is capable of well presenting a polarization-insensitive and wide incident angle stability in the microwave frequency range. The proposed MTMA comprising two ... -
Enhancement of image quality by using metamaterial inspired energy harvester
Alkurt, Fatih Özkan; Altıntaş, Olcay; Özaktürk, Melikşah; Karaaslan, Muharrem; Akgöl, Oğuzhan; Ünal, Emin; Sabah, Cumali (Elsevier, 2020)Metamaterial energy harvester based subwavelength imaging structure is presented. Besides, 2x2 array patch antenna is designed to create incident radiated signal towards the proposed harvester structure. Harvested energy ... -
Extremely-broad band metamaterial absorber for solar energy harvesting based on star shaped resonator
Bağmancı, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Akgöl, Oğuzhan; Sabah, Cumali (Springer, 2017)A new metamaterial absorber (MA) is investigated and shown numerically for solar energy harvesting for future solar cell applications. The structure consists of two metals and one dielectric layer having different thicknesses. ... -
Fluid, Strain and Rotation Sensing Applications by Using Metamaterial Based Sensor
Altıntaş, Olcay; Aksoy, Murat; Akgöl, Oğuzhan; Ünal, Emin; Karaaslan, Muharrem; Sabah, Cumali (Electrochemical Society Inc., 2017)We propose a design of a metamaterial based sensor to be used in various applications including micro-fluid, strain and rotation sensing. The structure has a simple geometry composed of a single circular split ring resonator ... -
Highly sensitive metamaterial-based microwave sensor for the application of milk and dairy products
Abdulkarim, Yadgar I.; Bakır, Mehmet; Yaşar, İbrahim; Ulutaş, Hasan; Karaaslan, Muharrem; Alkurt, Fatih Özkan; Sabah, Cumali; Dong, Jian (Optica Publishing Group (formerly OSA), 2022)In this work, a novel, to the best of our knowledge, metamaterial-based microwave sensor is designed, numerically simulated, and experimentally tested for milk and dairy products in the frequency range of 8 to 9 GHz. The ... -
Implementation of a perfect metamaterial absorber into multi-functional sensor applications
Akgöl, Oğuzhan; Karaaslan, Muharrem; Ünal, Emin; Sabah, Cumali (World Scientific Publishing Co. Pte Ltd., 2017)Perfect metamaterial absorber (MA)-based sensor applications are presented and investigated tigated in the microwave frequency range. It is also experimentally analyzed and tested to verify the behavior of the MA. Suggested ... -
Metamaterial absorber-based multisensor applications using a meander-line resonator
Akgöl, Oğuzhan; Altıntaş, Olcay; Dalkılınç, Elif Eda; Ünal, Emin; Karaaslan, Muharrem; Sabah, Cumali (Society of Photo-Optical Instrumentation Engineers, 2017)A metamaterial (MTM) absorber-based multifunctional sensor is numerically and experimentally realized using meander-line resonators. The proposed sensor device can be used to measure pressure, density, and humidity with ...
