Department of Physics, Thesis

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Thesis (971)

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Abu-Safa, Mustafa Abdulmajeed (2)
Akaoğlu, Barış (2)
Akman, Nurten (2)
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Physics. (128)
Natural Sciences (26)
Optics. (17)
Particles (Nuclear physics). (16)
Solar cells. (16)

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1966 - 1979 (88)
1980 - 1999 (321)
2000 - 2019 (519)
2020 - 2022 (42)

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Master Thesis (664)
Ph.D. Thesis (307)

Recent Submissions

OPTICAL SYSTEM DESIGN, INTEGRATION AND TESTING OF A 2D SCANNING LIDAR Cerit, Kübra; Bek, Alpan; Department of Physics (2022-1-20) In this thesis, optical system design, integration and testing of a compact LIDAR system with 270 degree field-of-view that based on time of flight principle is developed by Rekrom Optoelectronics. This system can identify...
Quantum Search in Sets with Prior Knowledge Çalıkyılmaz, Umut; Turgut, Sadi; Department of Physics (2021-10-7) Quantum search algorithm revolutionized the field by reducing the complexity significantly for the search problem. However, by not being able to decrease the complexity to logarithmic scales, this algorithm still needs a s...
Thermal rectification behaviour of some small quantum systems Zervent, Selahittin Atılay; Turgut, Sadi; Department of Physics (2021-9-10) Thermal rectification behaviors for some small quantum systems are studied by using the Lindblad master equation. From the underlying Hamiltonian dynamics of the composite quantum systems consisting of small quantum system...
Nonlinearities in quantum correlations of two time-like separated measurements Gharib Masouleh, Hamideh; Turgut, Sadi; Department of Physics (2021-9-10) When two time-like separated measurements are done on an observable with 3 or more eigenvalues, such as angular momentum of an spin-1 particle, the result of the measurements correlation is nonlinear in terms of the first ...
Design, production and performance analysis of a multi-pass matrix optical system for trace spectroscopy Önder Aksan, Tuba; Bek, Alpan; Kürüm, Ulaş; Department of Physics (2021-9-09) The design and fabrication of a multi-pass matrix optical system (MMS) for the atmospheric trace gas measurement system planned to be established is described. The measurement system is a sealed thermal vacuum-capable cham...
LONG TERM PERFORMANCE AND DEGRADATION RATES OF PV MODULES IN CENTRAL ANATOLIA Cantürk, Zeynep; Akınoğlu, Bülent Gültekin; Özden, Talat; Department of Physics (2021-9-09) Outdoor tests of photovoltaic modules are crucial for the market, and technological development. It is vital for manufacturers and researchers to conduct tests not only in the long term but also in different climatic condi...
Graphene Based Flexible Hall Sensors İnkaya, Uğur Yiğit; Oral, Ahmet; Department of Physics (2021-9-09) Graphene is a two-dimensional material that has electronic properties such as having low density of charge carriers with high mobility, which are ideal for fabricating Hall sensors. Also considering its elastic properties,...
Some aspects of black hole physics: spherical null and timelike orbits, and event horizon detection Tavlayan, Aydın; Tekin, Bayram; Department of Physics (2021-9-08) In this thesis, some crucial aspects of black hole physics are investigated. Exact formulas relating the radius of the spherical photon orbits to the black hole's rotation parameter and the effective inclination angle of t...
Compatibility of the dimensional reduction and variation procedures for a quadratic curvature model with a Kaluza-Klein ansatz Çelik, Sinan; Baykal, Zübeyde Sibel; Department of Physics (2021-9-02) The Kaluza-Klein theory is investigated for a 5D quadratic curvature Lagrangian. In order to obtain the field equations in the actual 4D spacetime, there are two different approaches composed of two successive applications...
Spectral analysis of an ultraluminous X-ray source Swift J0243.6+6124 Islamov, Gubad; Baykal, Altan; Department of Physics (2021-9) In this thesis, the spectral analysis on the first galactic ultraluminous X-ray pulsar Swift J0243.6+6124 has been carried out. This peculiar object has been firstly observed by Swift observatory during its outburst in the...
Mass Splittings of Heavy Quark Spin Symmetry Partners of X(3872) in QCD Sum Rules Çetin, Hande; Özpineci, Altuğ; Department of Physics (2021-9) The parameters of QCDSR such as the values of the condensates and the Borel mass are not well-established and hence increase the uncertainty of predictions up to 30%. In this study, mass splittings of the heavy quark spin ...
Effects of Non-Abelian Magnetic Fields on Pair Production in Flat and Curved Spaces Özcan, Berk; Kürkçüoğlu, Seçkin; Department of Physics (2021-9) Our objective in this thesis is to compute the pair production rates for both bosons and fermions under the influence of non-abelian gauge fields on the manifolds $\mathbb{R}^{3,1} \equiv \mathbb{R}^2 \times \mathbb{R}^{1,...
Enhancing the Resolution of Multimode Fiber Based Spectrometers Kahraman, Sıddık Süleyman; Yüce, Emre; Department of Physics (2021-9) Speckle-based spectrometers are shown to reach resolving powers that exceed the state-of-the-art grating spectrometers. These spectrometers offer high-resolution by relying on a complex spectral to spatial mapping. Multim...
GRAVITY THEORIES AT LARGE NUMBER OF DIMENSIONS Özen, Gökçen Deniz; Tekin, Bayram; Department of Physics (2021-8-13) General Relativity is succesful in understanding the phenomena such as light bending by the Sun and the perihelion precession of Mercury that could not be understood in Newton’s gravity. Within solar system scales, General...
Problems of Massive Gravity Boybeyi, Töre Deniz; Tekin, Bayram; Department of Physics (2021-8-5) In this thesis, the general properties of massive gravitation theories are outlined. Particular attention is given to the van Dam-Veltman-Zakharov discontinuity which arises in the massless limit of massive theories. Also,...
Hybrid Quantum-Classical Graph Neural Networks for Particle Track Reconstruction at the Large Hadron Collider Tüysüz, Cenk; Demirköz, Melahat Bilge; Department of Physics (2021-8-5) Particle collider experiments aim to understand Nature at small scales. Particle accelerators, such as the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN), collide particles at high rat...
EXACT SOLUTIONS OF INFINITE DERIVATIVE GRAVITY Öcal, Sultan Eylül; Tekin, Bayram; Kılıçarslan, Ercan; Department of Physics (2021-8) Infinite Derivative Gravity (IDG) is a modified gravity theory which can avoid the singularities and Ultraviolet problem of gravity. This thesis examines the effects of IDG on these problems. First, the propagators and New...
Chaos in BFSS and ABJM matrix models Taşcı, Cankut; Kürkcüoğlu, Seçkin; Yurduşen, İsmet; Department of Physics (2021-7) In this thesis, we focus on the chaotic dynamics emerging from Banks-Fischler- Shenker-Susskind (BFSS) and Aharony-Bergman-Jafferis-Maldacena (ABJM) models. We first direct our attention on the bosonic part of the BFSS mod...
Time Domain Terahertz Attenuated Total Internal Reflection Spectroscopy Atalar, Ataberk; Altan, Hakan; Department of Physics (2021-7) In this thesis, a Terahertz Time Domain Spectroscopy system based on the Attenuated Total Internal Reflection principle (THz ATR-TDS) was constructed in order to non-destructively evaluate materials which show high absorpt...
Exploring the casimir force at one-loop level Yalçın, Nergis Nevra; Turan, İsmail; Department of Physics (2021-2-23) Casimir force was first discovered by Hendrik Casimir in 1948 and it is a physical effect originally proposed for the two neutral conducting parallel plate geometry whose successful measurement by Lamoreaux et al. took alm...

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