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Recent Submissions

Suppression of the shunting-type potential induced degradation (PID-s) through ion exchange on soda lime silicate glasses Durusoy, Beyza; Kaya, Nahide Özben; Okan, Osman Burak; Budakoğlu, Refika; Akınoğlu, Bülent Gültekin; Turan, Raşit (2025-05-01) This study investigates the potential of chemically strengthened soda-lime-silicate (SLS) glass to mitigate Potential Induced Degradation (PID-s) caused by the shunting mechanism in photovoltaic (PV) modules, a key factor ...
NaBi(MoO4)2 crystal: Defect states and luminescence properties for optoelectronic applications Isik, M.; ALTUNTAŞ, GÖZDE; Hasanlı, Nızamı; Darvishov, N.H. (2025-03-15) This paper investigates the electronic and optical properties of NaBi(MoO4)2 crystal through absorbance, thermally stimulated current (TSC), and photoluminescence (PL) measurements. Absorbance analysis revealed important i...
Vanishing of conserved charges in Cotton gravity Altas, Emel; Tekin, Bayram (2025-02-01) Cotton gravity was recently introduced as a higher derivative extension of general relativity. The field equations of the theory involve the rank-3 Cotton tensor. Here we show that all solutions of the theory, including th...
On the maximally symmetric vacua of generic Lovelock gravities* Devecioglu, Deniz Olgu; Lindstrom, Ulf G.; Sarıoğlu, Bahtiyar Özgür (2025-01-01) We survey elementary features of Lovelock gravity and its maximally symmetric vacuum solutions. The latter is solely determined by the real roots of a dimension-dependent polynomial. We also recover the static spherically ...
VO2-Based Dynamic Coding Metamaterials for Terahertz Wavefront Engineering Akyurek, Bora; Noori, Aileen; Demirhan, Yasemin; Ozyuzer, Lutfi; Guven, Kaan; Altan, Hakan; Aygun, Gulnur (2025-01-01) Digital coding metasurfaces (DCMS) offer a promising alternative to conventional metasurface designs for achieving common functionalities by controlling the phase of reflected or transmitted electromagnetic waves. Their si...
Nanoindentation study of PbMoO4 crystals: mechanical properties and implications for applications Isik, M.; Hasanlı, Nızamı (2025-01-01) Nanomechanical properties of lead molybdate ( PbMoO 4 ) single crystal were investigated using nanoindentation measurements. The force-dependent Young's modulus and hardness of PbMoO4 along the [ 100 ] direction was determ...
Mixing angle between P1 3 and P1 1 states in heavy axial vector mesons within the QCD sum rules framework Alıyev, Tahmasıb; Bilmiş, Selçuk; Savcı, Mustafa (2025-01-01) In this study, we calculate the mixing angles between the axial-vector mesons D1(s1)-D1(s1)′ and B1(s1)-B1(s1)′ using the QCD sum rules approach. Our results are θ1=28.2±0.6°, θ2=26.6±0.6°, θ3=38.6±0.1°, and θ4=38.5±0.1°. ...
Anomaly induced inflation in the minimal quartic extension of Einstein’s gravity Demirel, Kerim; Tekin, Bayram (2024-12-01) A particular extension of Einstein’s General Relativity up to and including quartic terms in the curvature tensor is minimal in the sense that it has a unique maximally symmetric vacuum and only a massless spin-2 excitatio...
Underwater Muon Detection System to Measure Coastal Mixed Layer Depth for Ocean and Climate Studies Demirköz, Melahat Bilge; Korkmaz, Muhteşem Akif (2024-12-01)
Interfacial modification by 2-fluoroisonicotinic acid enabling high-efficiency and stable n-i-p perovskite solar cells Sun, Lei; Zhang, Chu; Bektaş, Gence; Li, Xiaowei; Ma, Chunying; Ma, Tingli (2024-12-01) The power conversion efficiency (PCE) of organic-inorganic halide perovskite solar cells (PSCs) developed rapidly in recent years. However, the defects at the bulk grain boundaries and heterojunction interfaces acting as n...
Determination of the multipole moments of the JP=3- mesons via QCD sum rules Alıyev, Tahmasıb; Bilmiş, Selçuk; Savcı, Mustafa (2024-12-01) The multipole moments of the JP=3- tensor mesons are obtained using light-cone sum rules. Our results are compared with the predictions of the light-cone helicity formalism within the framework of SU(3) flavor symmetry. We...
Unveiling the application potential of PbMo0.75W0.25O4 crystal: Linear and nonlinear optical properties through ellipsometry Isik, M.; Hasanlı, Nızamı (2024-12-01) PbMo0.75W0.25O4 compound is formed by replacing one quarter of the Mo atoms in the PbMoO4 with W atoms and has significant potential for optoelectronic applications. Optical properties of PbMo0.75W0.25O4 single crystal hav...
A search for Planet Nine with small spacecraft: Three-body, post-Newtonian, non-gravitational, planetary and Kuiper Belt effects Koprucu, Sahin Ulas; Tekin, Bayram (2024-12-01) A hypothetical gravitating body in the outer Solar System, the so-called Planet Nine, was proposed to explain the unexpected clustering of the Kuiper Belt Objects. As it has not been observed via telescopes, it was conject...
Integrating theoretical and experimental approaches to unveil the mechanical properties of CuSbSe2 thin films Surucu, Ozge; Gencer, Aysenur; Usanmaz, Demet; Parlak, Mehmet; SÜRÜCÜ, GÖKHAN (2024-12-01) An exhaustive investigation of the mechanical characteristics of CuSbSe2 thin films is conducted in this study by combining experimental nanoindentation methods with theoretical simulations. The Ab-initio Molecular Dynamic...
Laser-Induced Damage of UHMW-PE-Based Layered Ballistic Materials Candan, Can; Kaya Çekin, Emine Yasemen; Akşit Kaya, Elif Türkan; Tiken, Mehmet; Bek, Alpan; Berberoğlu, Halil; ORHAN, ELİF; Yeniay, Aydın (2024-11-19) The laser-induced damage threshold properties of material structures play a key role in identifying and selecting optimum materials with the respective geometric configurations for laser shielding applications. The laser-i...
Search for an eV-Scale Sterile Neutrino Using Improved High-Energy ν<sub>μ</sub> Event Reconstruction in IceCube Abbasi, R.; et. al. (2024-11-15) This Letter presents the result of a 3 + 1 sterile neutrino search using 10.7 yr of IceCube data. We analyze atmospheric muon neutrinos that traverse the Earth with energies ranging from 0.5 to 100 TeV, incorporating signi...
Search for Joint Multimessenger Signals from Potential Galactic Cosmic-Ray Accelerators with HAWC and IceCube Alfaro, R.; et. al. (2024-11-01) The origin of high-energy galactic cosmic rays is yet to be understood, but some galactic cosmic-ray accelerators can accelerate cosmic rays up to PeV energies. The high-energy cosmic rays are expected to interact with the...
Chern-Simons-like formulation of exotic massive 3D gravity models Dedeoğlu, Büşra; Özkan, Mehmet; Sarıoğlu, Bahtiyar Özgür (2024-11-01) We investigate the Chern-Simons-like formulation of exotic general massive gravity models within the framework of third-way to three-dimensional gravity. We classify our construction into two main approaches: one using tor...
Exploring Temperature-Dependent bandgap and Urbach energies in CdTe thin films for optoelectronic applications Surucu, O.; SÜRÜCÜ, GÖKHAN; Hasanlı, Nızamı; Parlak, Mehmet; Isik, M. (2024-10-15) This study examines CdTe thin films deposited via RF magnetron sputtering, focusing on structural and optical properties. X-ray diffraction, Raman spectroscopy, and SEM assessed structural characteristics. Optical properti...
Single-beam low-frequency loss modulation technique for two-photon absorption measurement Kadan, Viktor; Pavlov, Ihor; Dmytruk, Andriy; Blonskyi, Ivan; Pavlova, Tetiana; Serozhkin, Yuriy; Goodarzi, Arian; Bondar, Mykhailo (2024-10-15) We present a straightforward and reliable single-beam configuration designed for the assessment of two-photon absorption (2PA) through the utilization of the loss modulation technique. Mechanical rotation of a half-wave pl...

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