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Recent Submissions

Nonlinear optical and optical limiting properties of In2S3 chalcogenide thin films: Influence of defect states and deposition technique Hilal, Omer; Emur, H. Gulce; Dogan, Anil; YILDIZ, ELİF; Isik, Mehmet; Parlak, Mehmet; Surucu, Ozge; ELMALI, AYHAN; KARATAY, AHMET (2026-05-01) In this study, the nonlinear absorption (NA) and optical limiting (OL) properties of indium sulfide (In2S3) thin films prepared by physical vapor deposition (PVD) and radio-frequency (RF) magnetron sputtering were investig...
Massive runaway star HD 254577: The pre-supernova binary companion to the progenitor of the supernova remnant IC 443 Dinçel, B.; Paylı, G.; Yerli, Sinan Kaan; ANKAY, AŞKIN; Neuhäuser, R.; Mugrauer, M.; Sheth, S.; Buder, S.; Hüttel, S.; Edelmann, F.; Michel, K.-U.; Bätz, J. (2026-03-01) Aims. The secondaries of massive binary systems can be found as runaway stars after being ejected due to the supernova (SN) of the more massive component. We search for such stars inside supernova remnants (SNRs), where a ...
Study of the effect of ionizing γ-radiation on the structural and vibrational properties of GaS and Yb-doped GaS (GaSYb) single crystals by X-ray diffraction (XRD) and Raman spectroscopy Madatov, R. S.; Turan, Raşit; Tagiev, T. B.; Sedani, Salar H.; Khaligzadeh, A. Sh; Genc, A. M.; Gulen, E.; Mamishova, R. M. (2026-03-01) This study investigates the effects of gamma irradiation on the structural and vibrational properties of GaS and Yb-doped GaS (GaSYb) single crystals. X-ray diffraction (XRD) analysis reveals that irradiation induces sulfu...
Disorder-Engineered Hybrid Plasmonic Cavities for Emission Control of Defects in hBN GENÇ, SİNAN; Yücel, Oǧuzhan; Aǧlarcı, Furkan; Rodriguez-Fernandez, Carlos; Yilmaz, Alpay; Caglayan, Humeyra; Ateş, Serkan; Bek, Alpan (2026-02-18) Defect-based quantum emitters in hexagonal boron nitride (hBN) are promising building blocks for scalable quantum photonics due to their stable single-photon emission at room temperature. However, enhancing their emission ...
Concealed Face Analysis and Facial Reconstruction via a Multi-Task Approach and Cross-Modal Distillation in Terahertz Imaging Bergman, Noam; Yildirim, Ihsan Ozan; ŞAHİN, ASAF BEHZAT; Altan, Hakan; Yitzhaky, Yitzhak (2026-02-01) Terahertz (THz) sub-millimeter wave imaging offers unique capabilities for stand-off biometrics through concealment, yet it suffers from severe sparsity, low resolution, and high noise. To address these limitations, we int...
Ξc → Ξ semileptonic decays: A light cone sum rules view on the experiment-lattice tension Alıyev, Tahmasıb; Bilmiş, Selçuk; Savcı, Mustafa (2026-01-09) We present a light-cone QCD sum rule (LCSR) analysis of the semileptonic decays of Ξc baryons, focusing on the channels Ξ0c → Ξ−lþνl, and Ξþc → Ξ0lþνl. The transition form factors are calculated within the light-cone quant...
Semileptonic Λc→Λℓνℓ decays in light-cone QCD sum rules with Λc distribution amplitudes Alıyev, Tahmasıb; Bilmiş, Selçuk; Savcı, Mustafa (2026-01-01) We study the semileptonic decay of its SU(3) partner, the Λc→Λℓ+νℓ (ℓ=e,μ) transition, within the framework of light-cone QCD sum rules (LCSR) by using the distribution amplitudes of heavy Λc baryon. The numerical analysis...
Terahertz frequency-domain characterization of UHMW-PE ballistic armor plates Candan, Can; Kocyigit, Kayrahan; Tiken, Mehmet; ŞAHİN, ASAF BEHZAT; Altan, Hakan; BERBEROĞLU, HALİL (2026-01-01) Ultra-high molecular weight polyethylene (UHMW-PE) fiber-based ballistic armor plates are analyzed in the terahertz (THz) frequency region to better understand their structural properties. Various thickness plates are prod...
Variational approach to the snake instability of a Bose-Einstein condensate soliton Tanyeri, U.; Gurkan, M. A.; Keleş, Ahmet; Oktel, M. O. (2026-01-01) Solitons are striking manifestations of nonlinearity, encountered in diverse physical systems such as water waves, nonlinear optics, and Bose-Einstein condensates (BECs). In BECs, dark solitons emerge as exact stationary s...
Room-temperature electron-selective passivating contact with titanium–peroxo complexes for high-efficiency silicon solar cells Beyraghi, Naser; Bektaş, Gence; Donmez, Doguscan; Dehnavi, Mohammad; Chen, Daming; Chen, Yifeng; Feng, Zhiqiang; Shen, Hui; Günbaş, Emrullah Görkem; Yerci, Selçuk (2026-01-01) The increasing demand for high-performance and cost-effective solar cells is a driving factor in the development of new nanomaterials or compounds compatible with low-cost, low-temperature fabrication routes. Titanium oxid...
Inference on inner galaxy structure via gravitational waves from supermassive binaries Chen, Yifan; et. al. (2026-01-01) The detection of a stochastic gravitational wave background by pulsar-timing arrays indicates the presence of a population of supermassive black hole binaries. Although the observed spectrum generally matches predictions f...
Growth and optical characterization of PbMo0.5W0.5O4 single crystals for UV optoelectronic applications Mecit, Giray; Isik, M.; ALTUNTAŞ, GÖZDE; KARATAY, AHMET; Hasanlı, Nızamı; Darvishov, N. H. (2026-01-01) PbMo0.5W0.5O4 single crystals were successfully grown via the conventional Czochralski method, and their structural and optical properties were comprehensively investigated. x-ray diffraction analysis confirmed the phase p...
Hydrolysis of Al for hydrogen production: A joint experimental and first-principles density functional theory investigation Mutlu, Rasiha Nefise; Eroğlu, Esra; Toffoli, Hande; Toffoli, Daniele; Jayaraman, Kandasamy; Karaca, Mehmet; Gökalp, İskender (2025-12-15) Efficient and environmentally friendly H2 production is one of the most pressing challenges that face modern energy science. Hydrolysis of water over metals is used as an affordable and sustainable method for H2 production...
Ellipsometric study of TlInS2 chalcogenide crystals: exploring their potential in nonlinear optics and optoelectronics Isik, M.; Hasanlı, Nızamı (2025-12-01) TlInS2 exhibits remarkable optical properties, making the compound strong candidate for next-generation optoelectronic and nonlinear optical (NLO) applications. In this study, linear and NLO characteristics of TlInS2 cryst...
Optical gating in photodetector for femtosecond time-resolved imaging Kadan, Viktor; Dmytruk, Andriy; Bondar, Mykhailo; Dmytruk, Igor; Goodarzi, Arian; Akhtaryarazar, Darya; Pavlov, Ihor (2025-12-01) Non-degenerate two-photon femtosecond gating directly within a photosensor has been investigated in both external and internal photoeffect configurations, with the aim of enabling fast time-resolved imaging applications. T...
A study of the effect of γ-radiation on electrophysical characteristics of Yb-doped GaS single crystal Madatov, R.S.; Turan, Raşit; Tagiev, T.B.; Khaligzadeh, A. Sh.; Genç, A.M.; Gulen, E.; Mamishova, R.M. (2025-12-01) Doping GaS single crystals with Yb atoms introduces donor and acceptor levels, which dramatically change the electrical conductivity in the temperature range 125–300 K. Additional defect levels are added by gamma irradiati...
A case study: The negative THz time shift observed for Cu nanoparticle colloids Koral, Can; Ortaç, Bülend; Altan, Hakan (2025-12-01) We report a case study of the experimentally observed negative shift for the Copper nanoparticle colloids (NPs) when they are kept in contact with a quartz interface. This investigation is based on the previously reported ...
Quasiparticle properties of long-range impurities in a Bose condensate Yoğurt, Taha Alper; Eiles, Matthew T. (2025-12-01) An impurity immersed in a Bose condensate can form a quasiparticle known as a Bose polaron. When the impurity-boson interaction is short ranged and three-body Efimov correlations are neglected, the quasiparticle properties...
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...
Instability and information production around Kerr black holes: effects on entropy and the shadow Tavlayan, Aydın; Tekin, Bayram (2025-11-01) Massless or massive particles in unstable orbits around a Kerr black hole exhibit exponentially unstable motion when perturbed. They either plunge into the black hole or escape to infinity after making some oscillations ar...

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