Department of Physics, Article

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Why teach quantum in your own time: the values of grassroots organizations involved in quantum technologies education and outreach Genenz, Ulrike; Anne, Neelanjana; KILIÇ, ZEYNEP; Mathews, Daniel; Ok, Oya; Schmidt, Adrian; Seskir, Zeki Can (2025-12-01) This paper examines the intersection of goals and values within grassroots organizations operating in the realm of quantum technologies (QT) education. It delineates a fundamental distinction between the objective to provi...
Screen printed Ag-doped nickel metallization for industrial n-TOPCon silicon solar cells Unsur, Veysel; Arslan, Melisa Korkmaz; Alloji, Esma; Akgayev, Berkeli; Tokgoz, Halil; Turan, Raşit; Akbayrak, Serdar (2025-08-01) This study introduces an innovative Ag-doped Ni metallization technique for TOPCon silicon solar cells, offering a cost-effective alternative to traditional silver-based contacts. Employing nickel paste doped with only 4 %...
Proposal of dual-gate oxide layered with HfO2: Comparative results with SiO2-RadFET Yilmaz, Ercan; Ristić, Goran; Turan, Raşit; Yilmaz, Ozan; Gurer, Umutcan; Danković, Danijel; Budak, Erhan; Marjanović, Miloš; Veljković, Sandra; Mutale, Alex; Kahraman, Aysegul (2025-07-01) The aim of this study is to develop pMOS dosimeters that can exhibit high performance at high radiation doses compared to traditional SiO2-based RadFETs, for which a dual-gate oxide-layered sensor is proposed. The sensor c...
Exploring the thermal properties of gallium sulfide (GaS) for high-temperature applications Isik, M.; ALTUNTAŞ, GÖZDE; Hasanlı, Nızamı (2025-06-01) The thermal stability and decomposition behavior of gallium sulfide (GaS) material are critical factors in determining its suitability for high-temperature applications. This study comprehensively investigates the GaS comp...
Enhanced catalytic performance through precise structural modification of Au-Ag nanoworms using controlled etching process Khan, Ghazanfar Ali; Bek, Alpan; Masson, Jean-Francois; Ahmed, Waqqar (2025-05-20) Polycrystalline nanomaterials inherently possess a high concentration of defects, owing to the presence of grain boundaries. These defects, while abundant in smaller nanoparticles (NPs), can become embedded within the bulk...
Nanomechanical Properties and Application Potential of PbWO4 Crystals: Mechanical Behavior and Characterization Isik, Mehmet; ALTUNTAŞ, GÖZDE; Hasanlı, Nızamı (2025-05-15) This study investigated the mechanical properties of a single crystal of lead tungstate (PbWO4) through nanoindentation measurements. The Oliver-Pharr method was used to determine the force-dependent Young's modulus and ha...
Accretion, evaporation and superradiance phase diagram of (primordial) black holes and 10−21 − 1021 eV scalar, vector, tensor fields Ünal, Caner (2025-05-01) We obtain the accretion, evaporation and superradiance phase diagram of astrophysical and primordial black holes in the mass range 10−33−1011M⊙. This black hole mass range corresponds to production of 10−21−1021 eV particl...
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 ...
Vertical Self-Assembly of Gold Nanoworms for Sensitive Surface-Enhanced Raman Spectroscopy-Based Trace Detection Khan, Ghazanfar Ali; Demir, Ahmet Kemal; Demirtas, Ozge; Tasgin, Dilek Isik; Bek, Alpan; Bhatti, Arshad Saleem; Masson, Jean-Francois; Ahmed, Waqqar (2025-04-03) The assembly of anisotropic nanoparticles into closely packed structures results in unique functionalities. Herein, we report a 3D multilayer vertical assembly of worm-shaped Au nanoparticles using a carefully regulated ev...
Enhancing InGaN LED performance via ALD-grown Al2O3 sidewall passivation Bayramlı, Hasan Mert; Genç, Muhammet; Yücel, Oğuzhan; Bulut, B.; Bek, Alpan; Demirtaş, Mustafa (2025-04-01) InGaN-based light-emitting diodes (LEDs) are at the forefront of solid-state lighting technologies due to their superior efficiency and broad spectral emission. However, their performance is often compromised by leakage cu...
Electronic and Optical Insights into NaBi(WO4)2: A Promising Candidate for Optoelectronic Applications Isik, Mehmet; ALTUNTAŞ, GÖZDE; Hasanlı, Nızamı (2025-03-19) This study provides an in-depth exploration of the electronic and optical properties of NaBi(WO4)2 crystal, with a focus on its potential applications in optoelectronic technologies. Absorbance measurements revealed a band...
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...
Consistency problems of conformal Killing gravity Altas, Emel; Tekin, Bayram (2025-03-15) We show that gravity field equations based on a tensor with rank greater than 2 have consistency problems in the sense that integration constants in the solutions, such as the parameter m in the Schwarzschild metric, do no...
Search for Neutrino Doublets and Triplets Using 11.4 yr of IceCube Data Abbasi, R.; et. al. (2025-03-10) We report a search for high-energy astrophysical neutrino multiplets, detections of multiple neutrino clusters in the same direction within 30 days, based on an analysis of 11.4 yr of IceCube data. A new search method opti...
Study of proton–nucleus interactions in the DsTau/NA65 experiment at the CERN-SPS Aoki, S.; et. al. (2025-03-01) The DsTau(NA65) experiment at CERN was proposed to measure an inclusive differential cross-section of Ds production with decay to tau lepton and tau neutrino in p–A interactions. The DsTau detector is based on the nuclear ...
Observation of Cosmic-Ray Anisotropy in the Southern Hemisphere with 12 yr of Data Collected by the IceCube Neutrino Observatory Abbasi, R.; et. al. (2025-03-01) We analyzed the 7.92 x 10(11) cosmic-ray-induced muon events collected by the IceCube Neutrino Observatory from 2011 May 13, when the fully constructed experiment started to take data, to 2023 May 12. This data set provide...
Analysis of the B(s) → T(JP=2-) transition in light cone QCD sum rules Alıyev, Tahmasıb; Sarac, Y. (2025-03-01) The semileptonic B(s) → T(JP=2-)l+l- decays induced by flavor changing neural currents are investigated within the light cone quantum chromodynamics (QCD) sum rule method in the leading order of O(αs). We apply the B meson...
On the reliability of a modification of the fluid model of a glow discharge incorporating the calculation of the local EEDF at each point in space Wang, Ying; Rafatov, İsmail; Bogdanov, Eugeny; Kudryavtsev, Anatoly; Yao, Jingfeng; Yuan, Chengxun (2025-02-01) An analysis of the approach named “Space-Dependent Electron Energy Distribution Function (EEDF) Modeling” in the COMSOL Multiphysics's Plasma Module is carried out. This modeling approach allows a wide range of users to de...
Computational study of characteristics of atmospheric pressure glow discharge in helium Islamov, Gubad; Eylenceoglu, Ender; Rafatov, İsmail (2025-02-01) Numerical analysis of an atmospheric pressure glow discharge (APGD) in helium is carried out. Numerical models are spatially one- and two-dimensional and based on drift-diffusion theory of gas discharges. On the basis of t...
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...

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