Yazar "Ünal, Emin" için listeleme
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Double split ring resonator based microfluidic sensor for wastewater treatment applications
Altıntaş, Olcay; Aksoy, Mahmut; Ünal, Emin; Karaaslan, Muharrem (American Institute of Physics Inc., 2019)In this study, microfluidic sensor structure has been proposed for wastewater treatment applications. Resonator part of the proposed sensor consist of double split ring resonator (DSSR) integrated transmission lines to ... -
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 ... -
An electromagnetic non-destructive approach to determine dispersion and orientation of fiber reinforced concretes
Öztürk, Murat; Sevim, Umur Korkut; Akgöl, Oğuzhan; Karaaslan, Muharrem; Ünal, Emin (Elsevier, 2019)Including fibers in concretes improves their mechanical properties such as flexural strength, impact load resistance and limited crack propagation. The dispersion, orientation and types of the fibers placed in the concretes ... -
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 ... -
Exhibition of polarization conversions with asymmetric transmission theory, natural like chiral, artificial chiral nihility and retrieval studies for K- and C-band radar applications
Derin, Oğuz; Karaaslan, Muharrem; Ünal, Emin; Karadağ, Faruk; Altıntaş, Olcay; Akgöl, Oğuzhan (Indian Academy of Sciences, 2019)In this study, asymmetric transmission, natural chirality phenomena and a retrieval study with chiral metamaterials (MTMs) are numerically and experimentally focussed, investigated and discussed by examining the polarization ... -
Experimental verification of phononic crystal based on square arrays of cylindrical holes against seismic vibrations in full-scale systems: modeling, sensing and signal processing of seismic vibrations
Kaçın, Selçuk; Öztürk, Murat; Sevim, Umur Korkut; Karaaslan, Muharrem; Özer, Zafer; Akgöl, Oğuzhan; Mert, Bayram Ali; Ünal, Emin (Springer, 2021)In this study, phononic crystals reducing the earthquake effects will be determined and prototypes will be constructed which can give the opportunity to reduce the effects of seismic waves. Furthermore, test results will ... -
Experimental work on mechanical, electromagnetic and microwave shielding effectiveness properties of mortar containing electric arc furnace slag
Öztürk, Murat; Akgöl, Oğuzhan; Sevim, Umur Korkut; Karaaslan, Muharrem; Demirci, Mustafa; Ünal, Emin (Elsevier, 2018)It is well known that one of the widely used structural materials is ordinary cement mortar. Whereas the mechanical properties are sufficient as structural materials, its shielding effectiveness and prevention properties ... -
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. ... -
Farklı Konfigürasyonlarda Çelik Metamalzemeler Kullanarak Sismik Etkilerin Azaltılması
Kaçın, Selçuk; Sevim, Umur Korkut; Öztürk, Murat; Karaaslan, Muharrem; Demirci, Mustafa; Akgöl, Oğuzhan; ünal, Emin; Özer, Zafer; Başar, Mustafa Tunahan; Alkurt, Maide Erdoğan; Alkurt, Fatih Özkan; Mert, Bayram Ali; Kaya, Şeyda (Türk deprem araştırma dergisi (Online), 2021)Depremlerin yıkıcı etkilerini azaltmak için yapılan çalışmalar, son zamanlarda üzerinde durulan araştırma konuları arasındadır. Bu çalışmada, kare, üçgen, sinüs ve daire olmak üzere dört farklı saha dizisinde çelik met ... -
Fire Detection Behind a Wall by using Microwave Techniques
Alkurt, Fatih Özkan; Bağmancı, Mehmet; Karaaslan, Muharrem; Bakır, Mehmet; Altıntaş, Olcay; Karadağ, Faruk; Akgöl, Oğuzhan; Ünal, Emin (American Institute of Physics Inc., 2018)In this work, detection of the fire location behind a wall by using microwave techniques is illustrated. According to Planck's Law, Blackbody emits electromagnetic radiation in the microwave region of the electromagnetic ... -
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 ... -
Fraktal anten parametrelerinin metamalzemeler yardımıyla iyileştirilmesi
Doğan, Emine Ceren; Ünal, Emin (İskenderun Teknik Üniversitesi / Mühendislik ve Fen Bilimleri Enstitüsü / Elektrik-Elektronik Mühendisliği Anabilim Dalı, 2019)Metamalzemeler (MTM) doğada bulunmayan, yapay olarak istenilen amaca uygun bir şekilde tasarlanan ve üretilebilen malzemelerdir. Son yıllarda, gizleme (Shelby, Smith, & Schultz, 2001), süper lensler (Pendry, Schurig, & ... -
High Sensitive Metamaterial Sensor for Water Treatment Centres
Bakır, Mehmet; Dalgaç, Şekip; Ünal, Emin; Karadağ, Faruk; Demirci, Mustafa; Köksal, Ahmet Sertol; Akgöl, Oğuzhan; Karaaslan, Muharrem (Springer International Publishing Ag, 2019)In this study, a high sensitive metamaterial sensor has been designed to detect quality of water for water treatment centre. The water samples have been obtained and electrical properties have been measured in microwave ... -
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 ... -
Investigation of cotton fabric composites as a natural radar-absorbing material
Ayan, Muhammet Çağrı; Kiriş, Serap; Yapıcı, Ahmet; Karaaslan, Muharrem; Akgöl, Oğuzhan; Altıntaş, Olcay; Ünal, Emin (Emerald Group Publishing Ltd., 2020)Purpose The purpose of this paper is to investigate cotton fabric behavior that is exposed to radar waves between selected operation frequencies as an alternative radar-absorbing material (RAM) response. Cotton fabric ... -
Investigation of methanol contaminated local spirit using metamaterial based transmission line sensor
Dalgaç, Şekip; Akdoğan, Volkan; Kiriş, Serap; İncesu, Ayşe; Akgöl, Oğuzhan; Ünal, Emin; Başar, Mustafa Tunahan; Karaaslan, Muharrem (Elsevier, 2021)A metamaterial-based transmission line sensor was designed to determine the amount of methanol in methanol-contaminated local spirit samples both numerically and experimentally. The proposed sensor consists of a square ... -
Investigation of microwave power limiter for Industrial Scientific Medical band (ISM) applications
Sardi, Azzeddine; Alkurt, Fatih Özkan; Özkaner, Vedat; Karaaslan, Muharrem; Ünal, Emin; Mohamed, Taouzari (Wiley, 2020)In this paper, a new design of microstrip power limiter which is based on microstrip technology and zero bias Schottky diode is introduced. In this context, the FR-4 substrate that was characterized by dielectric permittivity ... -
Investigation of the mechanic, electromagnetic characteristics and shielding effectiveness of concrete with boron ores and boron containing wastes
Öztürk, Murat; Sevim, Umur Korkut; Akgöl, Oğuzhan; Ünal, Emin; Karaaslan, Muharrem (Elsevier, 2020)In this study, mechanical properties electromagnetic (EM), and shielding effectiveness of concrete samples containing boron product and wastes was investigated in details. In order to increase shielding effectiveness of ... -
Kompozit Özlü Alüminyum İletkenlerin (ACCC) üretilmesi ve iletkenliğinin yükseltilmesi için yapılan çalışmalar
Bu çalışmada kompozit özlü alüminyum iletkenlerin (ACCC) üretilmesi ve iletkenliğinin yükseltilmesi içinyapılan işlemler araştırılmıştır Elektrik enerjisi taleplerinin büyümesiyle birlikte iletim hatlarınınkapasitesinin ... -
Linear to left- and right-hand circular polarization conversion by using a metasurface structure
Akgöl, Oğuzhan; Altıntaş, Olcay; Ünal, Emin; Karaaslan, Muharrem; Karadağ, Faruk (Cambridge University Press, 2018)By using a metasurface (MS) structure, a linearly polarized wave is converted to circularly polarized waves. Both right- and left-handed circular polarizations (RHCPs and LHCP) are obtained by a simple configuration in the ...