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Rapid bacterial detection through microfluidic integration with a glucometer Eryilmaz, Merve; İLBASMIŞ TAMER, SİBEL; Panhwar, Sallahuddin; Tayyarcan, Emine Kübra; BOYACI, İSMAİL HAKKI; Suludere, Zekiye; ÇETİN, DEMET; Zengin, Adem; Yıldırım, Ender; TAMER, UĞUR (2025-08-01) We present a novel approach for sensitive and portable detection of pathogenic bacteria, which is crucial for household and clinical practice. Our method employs immunoliposomes, antibodies, and microchip to detect specifi...
Thermal performance of combined annular and longitudinal fins-on-tube units in natural convection Salamatbakhsh, Elyas; Bayer, Özgür (2025-05-15) To enhance heat transfer in natural convection, annular and longitudinal fins have extensive usage in the industry and have been vastly studied in the literature. The current study investigates horizontal tubes with novel ...
Comprehensive characterization of a pneumatic active flow control system using in-situ hot wire calibration Çetin, Cenk; Yavuz, Mehmet Metin (2025-03-01) Pneumatic active flow control systems have great potential to control the aerodynamic phenomena including, separation, circulation, and turbulence. To quantify the effectiveness of such flow control schemes, thorough chara...
The influence of slotted solid cylindrical fin with aluminum foam insert on the thermal and hydraulic characteristics of air-cooled pin-fin heat sink Bayrak, Fatih Taha; TOPRAK, Beytullah İsmet; SOLMAZ, İsmail; Bayer, Özgür (2025-03-01) This study basically aims to enhance the heat removal performance of conventional solid cylindrical pin-finned heat sinks while maintaining a tolerable pressure drop by inserting porous aluminum material into the slots at ...
Impact of nitrogen and alkali dopants on pore architecture and surface functionalities of biochar in one-step CO2 pyrolysis Akın, Süleyman Şener; Kır, Ali Bertan; Kazanç Özerinç, Feyza (2025-03-01) This study aims to elucidate the roles of common nitrogen dopants (melamine (M) and ammonium chloride (ACL)) and alkali agents (KOH (K) and NaOH (N)) on surface functional groups, pore architectures, and degrees of graphit...
Finite Element Analysis of Evolut Transcatheter Heart Valves: Effects of Aortic Geometries and Valve Sizes on Post-TAVI Wall Stresses and Deformations Mutlu, Onur; Mazhar, Noaman; Saribay, Murat; Yavuz, Mehmet Metin; Ozturk, Deniz; Ghareeb, Abdel Naser; Alnabti, Abdulrahman; Yalcin, Huseyin Cagatay (2025-02-01) Background/Objectives: For transcatheter aortic valve implantation (TAVI) therapy, a catheter-guided crimped valve is deployed into the aortic root. Valve types such as Edwards balloon-expandable valves and Medtronic self-...
Coupled thermo-elastic dynamics of rotating pre-twisted blades exposed to thermal shock including nonlinear rotational effects Lotfan, Saeed; Ciğeroğlu, Ender (2025-01-05) Rotating blades operating under high-temperature experience intense mechanical and thermal stresses induced by centrifugal forces and thermal shock. In this research, to address this critical yet understudied topic, couple...
Layer path updating algorithm based on Voronoi diagrams for material extrusion additive manufacturing ÖZCAN, MELİH; Hergul, Yigit; Yaman, Ulaş (2025-01-01) In Material Extrusion (MEX) types of Additive Manufacturing (AM) technologies, the continuity of the trajectories affects the surface quality of the artifacts manufactured and the time of fabrication. Continuous paths resu...
Rapid wall shear stress prediction for aortic aneurysms using deep learning: a fast alternative to CFD Faisal, Md. Ahasan Atick; Mutlu, Onur; Mahmud, Sakib; Tahir, Anas; Chowdhury, Muhammad E. H.; Bensaali, Faycal; Alnabti, Abdulrahman; Yavuz, Mehmet Metin; El-Menyar, Ayman; Al-Thani, Hassan; Yalcin, Huseyin Cagatay (2025-01-01) Abstract: Aortic aneurysms pose a significant risk of rupture. Previous research has shown that areas exposed to low wall shear stress (WSS) are more prone to rupture. Therefore, precise WSS determination on the aneurysm i...
ICU patient-on-a-chip emulating orchestration of mast cells and cerebral organoids in neuroinflammation Saglam-Metiner, Pelin; Yanasik, Sena; Odabasi, Yusuf Caglar; Modamio, Jennifer; Negwer, Moritz; Biray-Avci, Cigir; GÜLER, AYŞE; Erturk, Ali; Yıldırım, Ender; Yesil-Celiktas, Ozlem (2024-12-01) Propofol and midazolam are the current standard of care for prolonged sedation in Intensive Care Units (ICUs). However, the effects and mechanism of these sedatives in brain tissue are unclear. Herein, the development of a...
Supercooled erythritol for high-performance seasonal thermal energy storage Yang, Sheng; Shi, Hong-Yi; Liu, Jia; Lai, Yang-Yan; Bayer, Özgür; Fan, Li-Wu (2024-12-01) Seasonal storage of solar thermal energy through supercooled phase change materials (PCM) offers a promising solution for decarbonizing space and water heating in winter. Despite the high energy density and adaptability, n...
Suppressed narrowband reflectance of nanopatterned silicon photovoltaic cells Atak, Eslem Enis; Elçioğlu, Elif Begüm; Özyurt, Tuba Okutucu (2024-12-01) The increasing demand for efficient yet nonpolluting energy conversion technologies require the photovoltaic (PV) systems to have fine-tuned optical responses and suppressed thermalization. PV cells that are based on Silic...
Experimental and numerical investigation on fluid flow and heat transfer behaviour of foam cladded pin fin heat sink Güler, Nursel; Bayer, Özgür; SOLMAZ, İsmail (2024-11-01) As technology advances, there is a growing demand for more efficient cooling solutions in electronics. Open-cell metal foams offer a unique solution, combining the strength of metals with the characteristics of foams, incl...
Experimentally validated passive nonlinear capacitor in piezoelectric vibration applications Ali Taşkıran, M.; Özer, Mehmet Bülent (2024-10-01) Piezoelectric vibration isolation and energy harvesting applications have been extensively studied in the literature. The studies include linear and nonlinear approaches. Linear methods are simpler but possess inherent lim...
Accelerated 3D CFD modeling of multichannel flat grooved heat pipes Gökçe, Gökay; Çetin, Barbaros; Dursunkaya, Zafer (2024-10-01) Flat grooved heat pipes (HPs) have become essential in advanced thermal management solutions across various engineering applications. Modeling these devices, especially multichannel flat grooved HPs, involves significant c...
A microfluidic platform for real-time enumeration and high accuracy retrieval of a very low number of cells Şahin, Buket; Doğan, Begüm Şen; Özgür, Ebru; Zorlu, Özge; Yıldırım, Ender; Külah, Haluk (2024-10-01) In recent years, single cell isolation and analysis have become crucial, driven by the need to study rare cells in cell biology research, diagnostics, and personalized medicine. However, existing platforms for isolating sm...
Material modeling and recent findings in transcatheter aortic valve implantation simulations Mutlu, Onur; Saribay, Murat; Yavuz, Mehmet Metin; Salman, Huseyin Enes; Al-Nabti, A.Rahman D.M.H.; Yalcin, Huseyin Cagatay (2024-10-01) Background and objective: Transcatheter aortic valve implantation (TAVI) has significantly transformed the management of aortic valve (AV) diseases, presenting a minimally invasive option compared to traditional surgical v...
A sensitivity study on the starting simulations of turbojet engines Gullu, E.; Aran, G.; Erk, M.; Baran, Özgür Uğraş (2024-09-19) Gas turbine engine starting models require a lot of calibration to represent reality with acceptable accuracy due to the lack of high-quality component rig data in the sub-idle region. A detailed sensitivity study is prese...
Control of Flow Structures on Nonslender Delta Wing Utilizing Nozzle-Type Bleeding Slots Cetin, Cenk; Yılmaz, Oğuzhan; Yavuz, Mehmet Metin (2024-08-27)
Real-Time Milling Chatter Detection and Control with Axis Encoder Feedback and Spindle Speed Manipulation Çalışkan, Hakan (2024-08-01) This paper introduces a complete real-time algorithm, where the chatter is detected and eliminated by spindle speed manipulation via the chatter energy feedback calculated from the axis encoder measurement. The proposed me...

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