Browsing Mechanical Engineering by Author "3"
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Advanced slurry formulations for new generation chemical mechanical planarization (CMP) applications
Başım, Gül Bahar; Karagöz, Ayşe; Özdemir, Zeynep (Cambridge University Press, 2012-01)Chemical Mechanical Planarization (CMP) is widely used to ensure planarity of metal and dielectric surfaces to enable photolithography and hence multilevel metallization in microelectronics manufacturing. The aim of this ... -
A Cahn-Hilliard modeling of metal oxide thin films for advanced CMP applications
Karagöz, Ayşe; Şengül, Yasemin; Başım, Gül Bahar (ECS, 2014)Chemical mechanical planarization (CMP) process enables topographic selectivity through formation of a protective oxide thin film on the recessed locations of the deposited metal layer, while a continuous chemical oxidation ... -
Characterization of chemically modified thin films for optimization of metal CMP applications?
Başım, Gül Bahar; Karagöz, Ayşe; Özdemir, Zeynep (Cambridge University Press, 2013)Metal CMP applications necessitate the formation of a protective oxide film in the presence of surface active agents, oxidizers, pH regulators and other chemicals to achieve global planarization. Formation and mechanical ... -
A comparative study for the junction temperature of green light-emitting diodes
Özlük, Burak; Muslu, Ahmet Mete; Arık, Mehmet (IEEE, 2019-10)Solid-state lighting devices offer a wide variety of color options applicable for general and automotive lighting, various display systems, and a number of niche applications. As they get smaller, generated heat fluxes ... -
Design and kinematics of a 5-DOF parallel robot for beating heart surgery
Ersoy, Onur; Yıldırım, Mehmet Can; Ahmad, A.; Yirmibesoglu, O. D.; Koroglu, N.; Bebek, Özkan (IEEE, 2019)In this paper, mechanical and electronics design of a lightweight 5-DOF robot, Ozyegin Surgery Robot I (OSI), and it's performance of tracking the heart motion for coronary artery bypass procedure (CABG) are presented. The ... -
Design and modeling of a parallel robot for ultrasound guided percutaneous needle interventions
Orhan, Sabri Orcun; Yildirim, Mehmet Can; Bebek, Özkan (IEEE, 2015)Necessity of precise positioning in percutaneous needle operations enables robotic systems to take part in medical procedures. Researches that have been done until today showed robotic systems increase the accuracy of ... -
Effect of actuator deflection on heat transfer for low and high frequency synthetic jets
Ikhlaq, Muhammad; Ghaffari, Omidreza; Arık, Mehmet (IEEE, 2014)Synthetic jets are being investigated over the last four decades. Researchers have been interested in its unique applications for a wide range of flow control to thermal management of electronics applications. Synthetic ... -
Effect of external stress on the post-aging mechanical properties of rolled magnesium alloys
Mısırlı, Mustafa; Ghobadlou, Alı Hosseınzadeh; Yapıcı, Güney Güven (TANGER Ltd., 2020)In the current study the effects of conventional aging and stress aging on the microstructure and mechanical behavior of warm rolled AZ31 magnesium alloy were investigated. Tensile experiments revealed that the ultimate ... -
Evaluation of infection resistance of biological implants through CMP based micro-patterning
Başım, Gül Bahar; Özdemir, Zeynep; Karagöz, Ayşe (Cambridge University Press, 2012-01)Biomaterials are widely used for dental implants, orthopedic devices, cardiac pacemakers and catheters. One of the main concerns on using bio-implants is the risk of infection on the materials used. In this study, our aim ... -
An experimental and analytical study on the influence of superhydrophobic micro-textured surfaces on liquid wetting phenomena
Salem, Thamer Khalif; Budaklı, M.; Şahan, Oğuz; Arık, Mehmet (Elsevier, 2018-10-20)Controlling dust, particle, gas or liquid attachment or motion over the surfaces is attracting many researchers to reduce losses or reach mission-specific goals. Therefore, researchers have been developing novel surfaces ... -
An experimental study of impinging synthetic jets for heat transfer augmentation
Ghaffari, Omidreza; Ikhlaq, Muhammad; Arık, Mehmet (World Scientific Publishing Co, 2015-07)According to recent trends in the field of miniature electronics, the need for compact cooling solutions compatible with very thin profiles and small footprint areas is inevitable. Impinging synthetic jets are recognized ... -
Fatigue characteristics of continuous welded rails and the effect of residual stress on fatigue-ratchetting interaction
Mansouri, Deniz; Şendur, Polat; Yapıcı, Güney Güven (Taylor & Francis, 2020-03-16)The importance of ratchetting-fatigue interaction is garnering interest due to complex failure mechanism of rail welds under cyclic loading. The objective of this paper is to investigate the fatigue characteristics of ... -
Impact of orifice location on the mechanical response of side and central orifice synthetic jets
Naseem, Mohammad Zohaib; Şendur, Polat; Arık, Mehmet (2018-07-24)Synthetic jets have been at the focus of a number applications including flow control and thermal management of microelectronics due to their unique characteristics of transferring linear momentum through a flow structure ... -
Impact of orifice size over mechanical, flow and thermal performances of synthetic jets
Işıl, Onuralp; Yücesan, Boğaç; Arık, Mehmet (IEEE, 2018-07-24)Recent electronic systems require more aggressive cooling solutions due to their high functionality, densely packaged components and localized heating compared to low functionality systems in the last decade. Synthetic ... -
An investigation into flow and heat transfer of an ultrasonic micro-blower device for electronics cooling applications
Ghaffari, Omidreza; Solovitz, S. A.; Ikhlaq, Muhammad; Arık, Mehmet (Elsevier, 2016-05-08)As compact electronics increase in functionality, new electronics cooling approaches must be more effective, and they must be lower in form factor. In this paper, we investigated the cooling performance of a miniature ... -
Investigation of corrosion behavior of carbon steel for petroleum pipeline applications under turbulent flow conditions
Ahmed, Mohammed Salih; Talib, Nayyef Ahmed; Al-Gebory, Layth Wadhah Ismael (Institute of Information Science, 2020)This study investigates the corrosion of steel samples immersed in water with a dynamic corrosion setup at different pH values for three different velocities and three different exposure time. The characteristics of material ... -
Mars gezgini prototipi Merih-2
Balcı, Barış; Yıldırım, Mehmet Can; Bebek, Özkan (Gazi Üniversitesi, 2018-12)Merih-2, Özyeğin Üniversitesi Rover Takımı tarafından University Rover Challenge 2016 ve European Rover Challenge 2016’ya katılmak ve Mars koşullarında görev yapmak için tasarlanan gezgindir. Sürüş için Merih-2’nin 6 adet ... -
Metal oxide nano film characterization for CMP optimization
Başım, Gül Bahar; Karagöz, Ayşe; Özdemir, Zeynep (ECS, 2013)This paper focuses on the planarization of metallic films in microelectronics manufacturing by CMP through investigation of metal oxide thin films forming as a result of the chemical component of the process. Tungsten ... -
Modal characterization of additively manufactured TPMS structures: comparison between different modeling methods
Şimşek, Uğur; Akbulut, Aykan; Gayir, C. E.; Başaran, Cansu; Şendur, Polat (Springer Nature, 2020-10-14)The use of lattice structures has received increasing interest in various engineering applications owing to their high strength to weight ratio. Advances in additive manufacturing technologies enabled the manufacturing of ... -
On the mechanical behavior of accumulative roll bonded lightweight composite
Aljashaami, Dhyai Hassan Jawad; Ghobadlou, Ali Hosseinzadeh; Yapıcı, Güney Güven (IOP Publishing, 2019-09)Multi-layered composites have received great interest due to their enhanced mechanical and physical properties. In this study, Al6061/Al2024 composites were processed by accumulative roll bonding as a severe plastic ...
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