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Recent Submissions

Nature Allows High Sensitivity Thermal Imaging With Type-I Quantum Wells Without Optical Couplers: A Grating-Free Quantum Well Infrared Photodetector With High Conversion Efficiency
Beşikci, Cengiz (2021-04-01)
Quantum well infrared photodetectors (QWIPs) have facilitated thermal imagers with excellent pixel operability, uniformity and stability. The main disadvantage of the standard QWIP technology is the low conversion efficien...
Highly Sensitive and Tunable Fano-like Rod-Type Silicon Photonic Crystal Refractive Index Sensor
Kılıç, Selahattin Cem; Kocaman, Serdar (2021-01-01)
IEEEA highly sensitive and tunable 2D rod-type silicon photonic crystal cavity based biosensor configuration has been designed and numerically analyzed. The structure is optimized so that the light-matter interaction is ma...
Axial flux generator with novel flat wire for direct-drive wind turbines
Çakal, Gökhan; Keysan, Ozan (2021-01-01)
With the increased demand for renewable energy resources, the direct-drive wind turbine generators have been studied intensely in the last few decades. One megawatt direct-drive axial flux permanent magnet generator is pre...
A Stray Magnetic Flux-Based Robust Diagnosis Method for Detection and Location of Interturn Short Circuit Fault in PMSM
Gurusamy, Vigneshwaran; Bostancı, Emine; Li, Chen; Qi, Yuan; Akin, Bilal (Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
© 1963-2012 IEEE.Early diagnosis of interturn short circuit (ITSC) fault is essential to prevent catastrophic electrical machine failures. Along with the detection, locating the faulty winding at its incipient stage is als...
13.56 MHz Triple Mode Rectifier Circuit with Extended Coupling Range for Wirelessly Powered Implantable Medical Devices.
Engur, Yasemin; Yigit, Halil Andac; Külah, Haluk (Institute of Electrical and Electronics Engineers (IEEE), 2020-12-25)
In this work, a wide input/output range triple mode rectifier circuit operating at 13.56 MHz is implemented to power up medical implants. The proposed novel multi-mode rectifier circuit charges the load for an extended cou...
Modeling and fabrication of electrostatically actuated diaphragms for on-chip valving of MEMS-compatible microfluidic systems
Atik, Ali Can; Ozkan, Metin Dundar; Ozgur, Ebru; Külah, Haluk; Yıldırım, Ender (IOP Publishing, 2020-11-01)
This paper presents an analytical model to estimate the actuation potential of an electrostatic parylene-C diaphragm, processed on a glass wafer using standard microelectromechanical systems (MEMS) process technology, and ...
A Prominent Cell Manipulation Technique in BioMEMS: Dielectrophoresis
Caglayan, Zeynep; Demircan Yalcin, Yagmur; Külah, Haluk (2020-11-01)
BioMEMS, the biological and biomedical applications of micro-electro-mechanical systems (MEMS), has attracted considerable attention in recent years and has found widespread applications in disease detection, advanced diag...
PETOOL v2.0: Parabolic Equation Toolbox with evaporation duct models and real environment data
ÖZGÜN, ÖZLEM; Sahin, Volkan; Erguden, Muhsin Eren; Apaydin, Gokhan; YILMAZ, ASIM EGEMEN; Kuzuoğlu, Mustafa; SEVGİ, LEVENT (Elsevier BV, 2020-11-01)
A new version of PETOOL (Parabolic Equation Toolbox) is introduced with various additional capabilities. PETOOL is an open-source and MATLAB-based software tool with a user-friendly graphical user interface (GUI) for the a...
Performance limits for the amplitude estimation of power system harmonics & interharmonics
Altintasi, Cagri; Orguner, Umut; Salor, Ozgul (Institution of Engineering and Technology (IET), 2020-10-01)
In this study, the problem of amplitude estimation of (inter)harmonics is investigated. Specifically performance limits are provided for the accuracy of unbiased amplitude estimation algorithms and for the analysis window ...
Adaptive controller based on grid impedance estimation for stable operation of grid-connected inverters under weak grid conditions
Temiz, Hakan; Keysan, Ozan; Demirok, Erhan (Institution of Engineering and Technology (IET), 2020-10-01)
An electric grid having high impedance seen from the connection point is considered as a weak grid and it adversely affects the system stability of grid-tied voltage source inverters in renewable power devices. In this stu...
Causal and Passive Parameterization of S-Parameters Using Neural Networks
Torun, Hakki Mert; Durgun, Ahmet Cemal; Aygun, Kemal; Swaminathan, Madhavan (Institute of Electrical and Electronics Engineers (IEEE), 2020-10-01)
Neural networks (NNs) are widely used to create parametric models of S-parameters for various components in electronic systems. The focus of deriving these models has so far been numerical error reduction between the NN-ge...
Response to "Comment on 'Sliding planar conjoined cut-wire-pairs: A novel approach for splitting and controlling the absorption spectra'" [J. Appl. Phys. 128, 126101 (2020)]
Karacan, Nezihe; EKMEKÇİ, Evren; Sayan, Gönül (AIP Publishing, 2020-09-01)
In the Comment by S. C. Bakshi and D. Mitra [J. Appl. Phys. 128, 126101 (2020)], it is claimed that "cross-polarization reflection was ignored in calculation of absorptivity of that structure," "the actual absorptivity of ...
Enhancement of optical parametric amplification in microresonators via gain medium parameter selection and mean cavity wall reflectivity adjustment
Asirim, Ozum Emre; Kuzuoğlu, Mustafa (IOP Publishing, 2020-09-01)
This paper computationally investigates the effect of the polarization decay rate (gamma), and the peak resonance frequency (f(0)) on optical parametric amplification inside a low-loss micro resonator. It is found that, fo...
Realization of Single Layer Microbolometer Detector Pixel Using ZnO Material
Tanrikulu, M. Yusuf; Yildizak, Cigdem; Okyay, Ali K.; Akar, Orhan; Sarac, Adem; Akın, Tayfun (Institute of Electrical and Electronics Engineers (IEEE), 2020-09-01)
This paper presents the realization of a single layer microbolometer pixel fabricated using only ZnO material coated with atomic layer deposition. Due to the stress-free nature and high temperature coefficient of resistanc...
A Hybrid Simulation Model for Electromagnetic Launchers including the Transient Inductance and Electromotive Force
Tosun, Nail; Polat, Hakan; Ceylan, Doga; Karagoz, Mustafa; Yildirim, Baran; Gungen, Ibrahim; Keysan, Ozan (Institute of Electrical and Electronics Engineers (IEEE), 2020-09-01)
Although electromagnetic launchers (EMLs) are superior to classical gun-powder-based launchers, they have to withstand extreme electrical and mechanical conditions. Therefore, the optimal design and precise simulations of ...
Detection of Parkinson's Disease from gait using Neighborhood Representation Local Binary Patterns
Yurdakul, Ogul Can; Subathra, M. S. P.; George, S. Thomas (Elsevier BV, 2020-09-01)
Parkinson's Disease (PD) is a neurodegenerative disease that affects millions of people around the world. Diagnostics tools based on the clinical symptoms have been developed by the scientific community mostly in the last ...
Singularity Cancellation for Accurate MoM Analysis of Periodic Planar Structures in Layered Media
Adanir, Suleyman; Alatan, Lale (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-01)
One of the singularity cancellation schemes proposed in the literature is applied to calculate singular integrals arising in the method of moments (MoM) analysis of 2-D periodic planar structures in multilayered media. Dis...
Hybrid Vapor-Solution Sequentially Deposited Mixed-Halide Perovskite Solar Cells
Soltanpoor, Wiria; Dreessen, Chris; Şahiner, Mehmet Cem; Susic, Isidora; Afshord, Amir Zarean; Chirvony, Vladimir S.; Boix, Pablo P.; Günbaş, Emrullah Görkem; Yerci, Selçuk; Bolink, Henlk J. (2020-08-01)
The recent sky-rocketing performance of perovskite solar cells has triggered a strong interest in further upgrading the fabrication techniques to meet the scalability requirements of the photovoltaic industry. The integrat...
Segregation dynamics with reinforcement learning and agent based modeling
Sert, Egemen; Bar-Yam, Yaneer; Morales, Alfredo J. (Springer Science and Business Media LLC, 2020-7-16)
Societies are complex. Properties of social systems can be explained by the interplay and weaving of individual actions. Rewards are key to understand people's choices and decisions. For instance, individual preferences of...
Incorporation of generator maintenance scheduling with long-term power sector forecasting and planning studies
Ilseven, Engin; Göl, Murat (Institution of Engineering and Technology (IET), 2020-07-01)
The objective of this study is to propose a dynamic generator maintenance scheduling (GMS) algorithm for long-term power sector forecasting and planning studies in which electricity price and the resulting supply compositi...