• Influence of excitation frequency on structural and electrical properties of spray pyrolyzed CuInS2 thin films 

  Sankır, Nurdan Demirci; Aydın, Erkan; Sankır, Mehmet; Bozbey, Ali (Elsevier Science Sa, 2014-06)

  This paper reports the cost effective deposition of the copper indium sulfide (CuInS2) thin films under atmospheric conditions via ultrasonic spray pyrolysis. Structural and electrical properties of these films have been ...
• Resonant production of color octet muons at Future Circular Collider-based muon-proton colliders 

  Acar, Y. C.; Kaya, Ümit; Öner, Bilgehan Barış (IOP PUBLISHING, 2018-08)

  We investigate the resonant production of color octet muons in order to explore the discovery potential of Future Circular Collider (FCC)-based mu p colliders. It is shown that the search potentials of mu p colliders ...
• A minimal fermion-scalar preonic model 

  Kaya, Ümit; Öner, Bilgehan Barış; Sultansoy, Saleh (TÜBİTAK, 2018)

  A minimal fermion-scalar preonic model containing two fermionic preons and one scalar preon is proposed. This scheme allows prevention of the occurrence of undesired SM-level particles, namely leptons and quarks with unusual ...
• RESONANCE PRODUCTION OF EXCITED u QUARK AT FCC-BASED gamma p COLLIDERS 

  Günaydın, Yusuf Oğuzhan; Şahin, Mehmet; Sultansoy, Saleh (JAGIELLONIAN UNIV, 2018-10)

  Several Beyond the Standard Model theories proposed that fermions might have composite substructure. The existence of excited quarks is going to be the noticeable proof for the compositeness of Standard Model fermions. For ...
• Colloidal synthesis of CuInS2 nanoparticles: Crystal phase design and thin film fabrication for photoelectrochemical solar cells 

  Tuc Altaf, Çiğdem; Demirci Sankır, Nurdan (Elsevier, 2018-11-30)

  This study reports the colloidal synthesis of copper indium disulfide (CuInS2) nanoparticles in different crystal phases to be employed as thin film photoanodes in photoelectrochemical water splitting process. First, CuInS2 ...
• AZO/metal/AZO transparent conductive oxide thin films for spray pyrolyzed copper indium sulfide based solar cells 

  Aydın, Erkan; Sankır, Nurdan Demirci (Elsevier, 2018-05-01)

  In this study, effects of the aluminum doped zinc oxide (AZO) and metal sandwich structures on the photovoltaic performance of spray pyrolyzed copper indium sulfide (CuInS2) based solar cells have been investigated. ...
• Wrinkling of graphene because of the thermal expansion mismatch between graphene and copper 

  Oğurtanı, Ömer Tarık; Şenyıldız, Doğukan; Cambaz Büke, Göknur (Wiley, 2018-05)

  Well-defined bundles of wrinkles are observed on the graphene-covered copper by using atomic force microscopy after chemical vapor deposition process. Their numerical analyses are performed by employing a set of formula ...
• Reply to "Comment on 'Route from discreteness to the continuum for the Tsallis q-entropy' 

  Oikonomou, Thomas; Bağcı, Gökhan Barış (American Physical Society, 2018-06-05)

  It has been known for some time that the usual q-entropy S-q((n)) cannot be shown to converge to the continuous case. In Phys. Rev. E97, 012104 (2018), we have shown that the discrete q-entropy (S) over tilde ((n))(q) ...
• Route from discreteness to the continuum for the Tsallis q-entropy 

  Oikonomou, Thomas; Bağcı, Gökhan Barış (American Physical Society, 2018-01-05)

  The existence and exact form of the continuum expression of the discrete nonlogarithmic q-entropy is an important open problem in generalized thermostatistics, since its possible lack implies that nonlogarithmic qentropy ...
• Broadband direction-dependent transmission of light with photonic crystal heterostructure grating 

  Yılmaz, Döne; Giden, İbrahim Halil; Kurt, Hamza (IOP Publishing Ltd., 2018-01-17)

  Direction-dependent light transmission is a remarkable phenomenon owing to its great potential to be used in optical communication processing systems such as optical diodes, isolators and rectifiers. All these applications ...
• Directionality fields generated by a local Hilbert transform 

  Ahmed, Waqas Waseem; Herrero, Ramon; Botey, Muriel M.; Hayran, Zeki; Kurt, Hamza; Staliünas, Kestutis (American Physical Society, 2018-03-15)

  We propose an approach based on a local Hilbert transform to design non-Hermitian potentials generating arbitrary vector fields of directionality, p→(r→), with desired shapes and topologies. We derive a local Hilbert ...
• All-Dielectric Self-Cloaked Structures 

  Hayran, Zeki; Kurt, Hamza; Herrero, Ramon; Botey, Muriel M.; Staliunas, K. (American Chemical Society, 2018-05-16)

  A general procedure to design objects that are intrinsically invisible (without the necessity of an external cloak) has not been demonstrated so far. Here we propose a flexible method to design such self-cloaked objects ...
• Full utilization of semi-Dirac cones in photonics 

  Kurt, Hamza; Yasa, Utku G.; Turduev, Mirbek; Giden, İbrahim Halil (American Physical Society, 2018-05-16)

  In this study, realization and applications of anisotropic zero-refractive-index materials are proposed by exposing the unit cells of photonic crystals that exhibit Dirac-like cone dispersion to rotational symmetry reduction. ...
• Broadband self-collimation in C2 symmetric photonic crystals 

  Gümüş, Melike; Giden, İbrahim Halil; Kurt, Hamza (OSA - The Optical Society, 2018-06-01)

  In this study, we report a low-symmetric photonic crystal (PhC) structure that exhibits high coupling efficiency in a broadband frequency range with a tilted self-collimating capability. First, the analytical approach is ...
• Highly controlled Bloch wave propagation in surfaces with broken symmetry 

  Yılmaz, Döne; Yeltik, Aydan; Kurt, Hamza (OSA - The Optical Society, 2018-06-01)

  We propose and demonstrate reduced symmetry photonic surfaces providing highly controlled Bloch wave propagation. The backward and dual directional propagations have been observed in the proposed low-symmetric periodic ...
• Invisibility on demand based on a generalized Hilbert transform 

  Hayran, Zeki; Herrero, Ramon; Botey, Muriel M.; Kurt, Hamza; Staliunas, Kestutis (American Physical Society, 2018-07-12)

  We propose a feasible invisibility approach to suppress the scattering of waves from or to given directions and for particular frequencies, i.e., invisibility on demand. We derive a generalized Hilbert transform for a ...
• Ultracompact Photonic Structure Design for Strong Light Confinement and Coupling Into Nanowaveguide 

  Turduev, Mirbek; Bor, Emre; Latifoğlu, Çağrı; Giden, İbrahim Halil; Hanay, Y. Sinan; Kurt, Hamza (Institute of Electrical and Electronics Engineers Inc., 2018-07-15)

  Different optimization algorithms have recently been utilized to design and improve the performance of many nanophotonic structures. We present the design of a compact photonic structure by an approach based on machine ...
• Broadband and polarization-independent asymmetric transmission of visible light through a three-dimensional trapezoidal metallic metasurface 

  Özer, Ahmet; Koçer, Hasan Erdinç; Kurt, Hamza (OSA - The Optical Society, 2018-09-01)

  In modern optical applications, it has become an important need to flow light unidirectionally. An optical diode realizes this task as an electrical counterpart manipulates the flow of electrons in semiconductor materials. ...
• Polarization-insensitive beam splitters using all-dielectric phase gradient metasurfaces at visible wavelengths 

  Ozer, A.; Yilmaz, N.; Kocer, H.; Kurt, Hamza (OSA - The Optical Society, 2018-09-15)

  Beam splitters play important roles in several optical applications, such as interferometers, spectroscopy, and optical communications. In this study, we propose and numerically examine polarization-insensitive beam splitters ...
• Enhanced superprism effect in symmetry reduced photonic crystals 

  Gumus, M.; Giden, I.H.; Akcaalan, O.; Turduev, M.; Kurt, Hamza (American Institute of Physics Inc., 2018-09-24)

  We propose compact S-vector superprism providing broadband wavelength sensitivity within a/λ = 0.610-0.635, where "a" is the lattice constant, λ is the incident wavelength, and S denotes the Poynting vector. The reported ...

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