Yazar "RTEÜ, Mühendislik ve Mimarlık Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü" için MÜF, Elektrik-Elektronik Mühendisliği Bölümü Koleksiyonu listeleme
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GaN terahertz photodetectors for the reststrahlen Gap of intersubband optoelectronics
Durmaz Sağır, Habibe; Nothern, Denis; Brummer, Gordie; Moustakas, Theodore D.; Paiella, Roberto (Ieee, 2017)Terahertz intersubband photodetectors are developed based on GaN/AlGaN quantum wells grown on a semi-polar GaN substrate, covering the frequency range that is fundamentally inaccessible to existing III-V semiconductor ... -
Graphene terahertz plasmons: A combined transmission spectroscopy and raman microscopy study
Tantiwanichapan, Khwanchai; Wang, Xuanye; Durmaz, Habibe; Li, Yuyu; Swan, Anna K.; Paiella, Roberto (Amer Chemical Soc, 2017)Graphene provides a promising materials platform for fundamental studies and device applications in plasmonics. Here we investigate the excitation of THz plasmon polaritons in large-area graphene samples on standard oxidized ... -
Growth and characterization of Ag/n-ZnO/p-Si/Al heterojunction diode by sol-gel spin technique
Keskenler, Eyüp Fahri; Tomakin, Murat; Doğan, Seydi; Turgut, Güven; Aydın, Serdar; Duman, Songül; Gürbulak, Bekir (Elsevier Science Sa, 2013)Polycrystalline ZnO thin film was obtained on the p-Si for the heterojunction diode fabrication by sol-gel method. X-ray diffraction study showed that the texture of the film is hexagonal with a strong (002) preferred ... -
Harmonic problems in renewable and sustainable energy systems: A comprehensive review
Eroğlu, Hasan; Cüce, Erdem; Cüce, Pınar Mert; Gül, Fatih; İskenderoğlu, Abdulkadir (Elsevier, 2021)Harmonics are known as distortions in the form of voltage and current, which are driven by the nonlinear loads in the network. Harmonics can be basically asserted as the most common problem in renewable-based power generation ... -
Hava hedeflerinin tespiti için yakın gerçek zamanlı çoklu frekans bandı destekli pasif radar sisteminin geliştirilmesi
Tüysüz, Burak (Gazi Univ, Fac Engineering Architecture, 2019)Passive radars are radar systems that do not have a transmitter of their own but can identify and follow targets by using the transmitters located in the environment. the interest in passive radar systems, whose history ... -
Hava taşıtlarının denizaltı pasif akustik sistemle uzaktan algılanma mesafelerinin incelenmesi
Mahmutoğlu, Yiğit (TUBİTAK Scientific & Technical Research Council Turkey, 2021)The seas, which covers approximately 2/3 of our world, contain many living species as well as many human-made structures. Today, passive acoustic listening in underwater environment is used in many applications such as ... -
Heuristic algorithm-based estimation of rotor resistance of an induction machine by slot parameters with experimental veri cation
Çelebi, Mehmet; Tören, Murat (2017)The estimations of induction machine equivalent circuit parameters are still being widely used in the analysis and in determining the characteristics of the machine. Since the most important part of the machine is the rotor ... -
A hybrid BCI using singular value decomposition values of the fast walsh-hadamard transform coefficients
Ergün, Ebru; Aydemir, Önder (IEEE, 2023)One of the main goals of a brain computer interface (BCI) is to enable a communication channel between the brain and electronic devices by converting neural activity into control commands either for devices or applications. ... -
A hybrid PV-battery/supercapacitor system and a basic active power control proposal in MATLAB/simulink
Şahin, Mustafa Ergin; Blaabjerg, Frede (Mdpi, 2020)An increase in the integration of renewable energy generation worldwide brings along some challenges to energy systems. Energy systems need to be regulated following grid codes for the grid stability and efficiency of ... -
III-nitride terahertz photodetectors for the reststrahlen gap of intersubband optoelectronics
Paiella, Roberto; Durmaz, Habibe; Sudradjat, Faisal F.; Nothern, Denis; Brummer, Grace C.; Zhang, Wan; Woodward, Jeff; Moustakas, Theodore D. (Spie-Int Soc Optical Engineering, 2017)We report the development of terahertz intersubband photodetectors based on GaN/AlGaN quantum wells, covering the frequency range that is fundamentally inaccessible to existing III-V semiconductor devices due to Reststrahlen ... -
Impact on efficiency of core materials in dry type transformers
Tören, Murat; Çelebi, Mehmet (Ieee, 2016)Transformers have an important place in electric transmission and distribution systems. Transmission and distribution efficiency of transformers should be high in regard to energy efficiency. Efficiency is one of important ... -
The influence of Y contribution on crystallographic, topographic and optical properties of ZnO: A heterojunction diode application
Turgut, Güven; Duman, Songül; Keskenler, Eyüp Fahri (Academic Press Ltd- Elsevier Science Ltd, 2015)Pure and yttrium (Y) doped ZnO samples were fabricated on micro slide glasses and p-Si wafers for device application via a simple and cheap sol-gel route using a spin coater. the characterization results of XRD, SEM and ... -
Investigating the informative brain region in multiclass electroencephalography and near infrared spectroscopy based BCI system using band power based features
Ergün, Ebru; Aydemir, Önder; Korkmaz, Onur Erdem (Taylor & Francis Ltd., 2024)In recent years, various brain imaging techniques have been used as input signals for brain-computer interface (BCI) systems. Electroencephalography (EEG) and near-infrared spectroscopy (NIRS) are two prominent techniques ... -
Investigation of GSM, LTE and Wi-Fi electromagnetic radiation in dwellings
Karan, Yasin; As, Nilüfer; Şahin, Mustafa Ergin (Polish Acad Sciences Inst Physics, 2017)Electromagnetic radiation exposure increases with the rise of the wireless communication devices. Electromagnetic radiation, especially near 2400 MHz band, has gradually increased with the widespread of wireless fidelity ... -
Investigation of photocatalytic performance of GaN-WSSe under vertical strain
Yelgel, Övgü Ceyda (Recep Tayyip Erdoğan University, 2023)The utilization of mechanical strain is an essential way to modify and optimize the physical properties of materials, possibly making them usable for a variety of applications, including nanoelectronics and renewable ... -
Investigation of the effect of different power degree NdFeB magnets used in interior permanent magnet brushless direct current motor (IPMBLDC) on motor performance
Tören, Murat; Mollahasanoğlu, Hakkı (Gazi Üniversitesi, 2023)Purpose: In this study, it is aimed to determine the effects of magnets used in BLDC motors on the motor performance of NdFeB type magnets with different power densities at different temperatures. Theory and Methods: The ... -
An investigation of the Nb doping effect on structural, morphological, electrical and optical properties of spray deposited F doped SnO2 films
Turgut, Güven; Keskenler, Eyüp Fahri; Aydın, Serdar; Yılmaz, Mehmet; Doğan, Seydi; Düzgün, Bahattin (Iop Publishing Ltd, 2013)F and Nb + F co-doped SnO2 thin films were deposited on glass substrates by the spray pyrolysis method. the microstructural, morphological, electrical and optical properties of the 10 wt% F doped SnO2 (FTO) thin films were ... -
Investigation of thermoelectric cooler system effect on induction motor performance
Tören, Murat; Mollahasanoğlu, Hakkı (Institute of Electrical and Electronics Engineers Inc., 2021)Induction motors are generally cooled by the fan connected to the motor shaft, as the cooling of electrical machines is important. In this study, an alternative method is proposed for cooling of induction motors. Thermoelectric ... -
Investıgatıon of boron and yttrıum dopıng effect on structural, electrıcal and optıcal propertıes of sol-gel spın coated sno2 thın fılms
Keskenler, Eyüp Fahri; Turgut, Güven; Aydın, Serdar; Dilber, Refik; Turgut, Ümit (Natl Inst R&D Materials Physics, 2013)In this study, B and Y doped SnO2 thin films were prepared by sol-gel spin coating method. the structural, electrical and optical properties of doped SnO2 were investigated as a function of B and Y doping content. From XRD ... -
Kararlı durumda seri kapasitörlerin iletim şebekesine etkilerinin incelenmesi
Artan nüfus ve gelişen sanayi ile birlikte elektrik enerjisi ihtiyacı günden güne artmaktadır. Bu talebin karşılanması için yeni üretim tesisleri birincil enerji kaynaklarına yakın yerlerde kurulmakta ve iletim şebekesi ...