Department of Electrical and Electronics Engineering

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Recent Submissions

Maximizing the active power flow controllability in a distribution system with optimum SOP placement Sezgin, Mustafa Erdem; Uzunalioğlu, Ayşenur; Deveci, Umur; Göl, Murat (2025-07-01) The classical distribution system has recently begun evolving with the introduction of new assets, such as distributed energy resources and electric vehicles. Although these technologies help nations reduce their greenhous...
Temperature-dependent evolution of Al-Ge microstructures for wafer-level vacuum packaging of MEMS devices Dimez, Bekir Gürel; Akın, Tayfun; Kalay, Yunus Eren (2025-04-01) This paper reports the temperature dependency of eutectic aluminum-germanium (Al-Ge) microstructures that can be used for complementary metal-oxide semiconductor (CMOS)-compatible wafer-level vacuum packaging of microelect...
Common Aperture DSLR Camera Design Approach with Diffractive Lens Ünal, Ahmet (Gazi Universitesi Fen Bilimleri Dergisi Part C: Tasarim ve Teknoloji, 2025-3-24) Digital Single-Lens Reflex (DSLR) cameras have widespread applications across various fields. Yet, their reliance on eyepieces poses limitations on their functionality. To address this constraint, a comprehensive optical s...
DDRM-PR: Fourier phase retrieval using denoising diffusion restoration models Kaya, Mehmet Onurcan; Öktem, Sevinç Figen (2025-02-10) Diffusion models have demonstrated their utility as learned priors for solving various inverse problems. However, most existing approaches are limited to linear inverse problems. This paper exploits the efficient and unsup...
Deep plug-and-play HIO approach for phase retrieval Işil, Çağatay; Öktem, Sevinç Figen (2025-02-10) In the phase retrieval problem, the aim is the recovery of an unknown image from intensity-only measurements such as Fourier intensity. Although there are several solution approaches, solving this problem is challenging du...
A battery degradation-aware energy management system for agricultural microgrids Safavi, Vahid; Vaniar, Arash Mohammadi; Bazmohammadi, Najmeh; Vasquez, Juan C.; Keysan, Ozan; Guerrero, Josep M. (2025-02-01) The integration of renewable energy sources (RESs) into power grids underscores the necessity for efficient energy storage solutions to ensure power balance and increase grid reliability. Although battery energy storage sy...
Direct-Print 3D Electrodes for Large-Scale, High-Density, and Customizable Neural Interfaces Wang, Pingyu; Wu, Eric G.; Uluşan, Hasan; Zhao, Eric Tianjiao; Phillips, A. J.; Kling, Alexandra; Hays, Madeline Rose; Vasireddy, Praful Krishna; Madugula, Sasidhar; Vilkhu, Ramandeep; Hierlemann, Andreas; Hong, Guosong; Chichilnisky, E. J.; Melosh, Nicholas A. (2025-01-20) Silicon-based microelectronics can scalably record and modulate neural activity at high spatiotemporal resolution, but their planar form factor poses challenges in targeting 3D neural structures. A method for fabricating t...
Distributed energy management and communication strategy for network of microgrids Sezgin, Mustafa Erdem; Göl, Murat (2025-01-01) The increasing integration of renewables, battery storage, and electric vehicles is leading communities to operate as microgrids within distribution networks. Managing multiple microgrids as a network of microgrids enhance...
A critical review of bioanalytical and clinical applications of solid phase microextraction Sevgen, Sılanur; Kara, Gökşin; Kir, Aysegul Seyma; Şahin, Alper; Boyacı, Ezel (2025-01-01) Studying the functions, mechanisms, and effects of drugs and other exogenous compounds on biological systems, together with investigations performed to understand biosystems better, comprises one of the most fascinating ar...
Review on DFIG Supplementary SSI Damping Controllers: Design, Development, and Directions Xue, Tao; Karaağaç, Ulaş; Ghafouri, Mohsen; Kocar, Ilhan (2025-01-01) This paper presents a comprehensive review of the supplementary damping controllers (SDCs) proposed for the mitigation of sub-synchronous interaction (SSI) between doubly-fed induction generator-based wind parks (DFIG-WPs)...
Augustin Information in the Vicinity of Augustin Capacity-Achieving Input Distributions Cheng, Hao Chung; Nakiboğlu, Barış (2024-12-30)
Predictive uncertainty in state-estimation drives active sensing Kaan Karagoz, Osman; Kılıç, Ayşegül; Yusuf Aydin, Emin; Ankaralı, Mustafa Mert; UYANIK, İSMAİL (2024-12-04) Animals use active sensing movements to shape the spatiotemporal characteristics of sensory signals to better perceive their environment under varying conditions. However, the underlying mechanisms governing the generation...
A 4096 channel event-based multielectrode array with asynchronous outputs compatible with neuromorphic processors Cartiglia, Matteo; Costa, Filippo; Narayanan, Shyam; Bui, Cat-Vu H.; Uluşan, Hasan; Risi, Nicoletta; Haessig, Germain; Hierlemann, Andreas; Cardes, Fernando; Indiveri, Giacomo (2024-12-01) Bio-signal sensing is pivotal in medical bioelectronics. Traditional methods focus on high sampling rates, leading to large amounts of irrelevant data and high energy consumption. We introduce a self-clocked microelectrode...
A full-custom fully implantable cochlear implant system validated in vivo with an animal model Uluşan, Hasan; Yüksel, Muhammed Berat; TOPÇU, OKAN; Yiğit, H. Andaç; Yılmaz, Ali Özgür; Doğan, Mert; Gülhan Yasar, Nagihan; Kuyumcu, İbrahim; Batu, Aykan; Göksu, Nebil; Uğur, M. Birol; Külah, Haluk (2024-12-01) Realizations of fully implantable cochlear implants (FICIs) for providing adequate solution to esthetic concerns and frequent battery replacement have lacked of addressing system level criteria as a complete device. Here, ...
Isotropic gap formation, localization, and waveguiding in mesoscale Yukawa-potential amorphous structures Sarihan, Murat Can; Gövdeli, Alperen; Lan, Zhihao; Yilmaz, Yildirim Batuhan; Erdil, Mertcan; Wang, Yupei; Aras, Mehmet Sirin; Yanik, Cenk; Panoiu, Nicolae Coriolan; Wong, Chee Wei; Kocaman, Serdar (2024-12-01) Amorphous photonic structures are mesoscopic optical structures described by electrical permittivity distributions with underlying spatial randomness. They offer a unique platform for studying a broad set of electromagneti...
Analyzing Pulse Compression Performance and Image Quality Metrics of Different Excitations in MAET With Magnetic Field Measurements Gözü, Mehmet Soner; Gençer, Nevzat Güneri (2024-12-01) This study investigates the pulse compression technique to improve the performance of magneto-acousto-electrical tomography (MAET) with magnetic field measurements through numerical studies. Emphasizing the effects of spec...
MEMS-Based Su-8 Neural Probes for Enhanced Neuromonitoring Atik, Ali Can; Balcı, Leman Dicle; Topçu, Özlem; Yılmaz, Akın Mert; Hanalioğlu, Şahin; Karataş Kurşun, Hülya; Uluşan, Hasan; Aslan, Mahmut Kamil; Külah, Haluk (2024-11-13)
A MEMS-Based Thin Film Microelectrode Array For Monıtorıng of Traumatıc Brain Injury Atik, Ali Can; Topçu, Özlem; Yılmaz, Akın Mert; Balcı, Leman Dicle; Hanalioğlu, Şahin; Uluşan, Hasan; Aslan, Mahmut Kamil; Külah, Haluk (2024-11-13)
Transmit beampattern design for FDA-MIMO radar using complex manifold optimization Özen, Berkcan; Tuncer, Temel Engin (2024-11-01) Frequency diverse array multiple-input multiple-output (FDA-MIMO) radar can produce time-stationary range-angle dependent beampattern. The problem with these beampatterns is the repeating lobes in the angle-range domain. D...
Graph domain adaptation with localized graph signal representations Pilavcı, Yusuf Yiğit; Güneyi, Eylem Tuğçe; Cengiz, Cemil; Vural, Elif (2024-11-01) In this paper we propose a domain adaptation algorithm designed for graph domains. Given a source graph with many labeled nodes and a target graph with few or no labeled nodes, we aim to estimate the target labels by makin...

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