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Browsing Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering by Title

Browsing Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering by Title

Now showing items 1-20 of 113

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 ...
Asymmetric light transmission effect based on an evolutionary optimized semi-Dirac cone dispersion photonic structure

Bor, E.; Turduev, M.; Yasa, U.G.; Kurt, Hamza; Staliunas, K. (American Physical Society, 2018-12-10)

In this paper, we present the numerical and experimental demonstration of asymmetric light transmission by a compact photonic crystal (PC) structure, which sustains semi-Dirac cone dispersion. The semi-Dirac point is ...
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. ...
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. ...
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 ...
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 ...
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 ...
Combination of Searches for Invisible Higgs Boson Decays with the ATLAS Experiment

ATLAS Collaboration; Sultansoy, Saleh F. (American Physical Society, 2019)

Dark matter particles, if sufficiently light, may be produced in decays of the Higgs boson. This Letter presents a statistical combination of searches for H→invisible decays where H is produced according to the standard ...
Combinations of single-top-quark production cross-section measurements and |f LV Vtb| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments

ATLAS collaboration; The CMS Collaboration; Sultansoy, Saleh F. (Springer Verlag, 2019)

This paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at s = 7 and 8 TeV corresponding to integrated ...
Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from pp and Pb+Pb Collisions in ATLAS

ATLAS Collaboration; Sultansoy, Saleh F. (American Physical Society, 2019)

Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in 25 pb-1 of pp and 0.49 nb-1 of Pb+Pb collision data at 5.02 TeV per nucleon pair ...
Constraints on mediator-based dark matter and scalar dark energy models using √s = 13 TeV pp collision data collected by the ATLAS detector

ATLAS Collaboration; Sultansoy, Saleh F. (Springer Verlag, 2019)

Constraints on selected mediator-based dark matter models and a scalar dark energy model using up to 37 fb−1s = 13 TeV pp collision data collected by the ATLAS detector at the LHC during 2015-2016 are summarised in this ...
Correlated long-range mixed-harmonic fluctuations measured in pp, p+Pb and low-multiplicity Pb+Pb collisions with the ATLAS detector

ATLAS Collaboration; Sultansoy, Saleh F. (Elsevier B.V., 2019)

Correlations of two flow harmonics vn and vm via three- and four-particle cumulants are measured in 13 TeV pp, 5.02 TeV p+Pb, and 2.76 TeV peripheral Pb+Pb collisions with the ATLAS detector at the LHC. The goal is to ...
Cross-section measurements of the Higgs boson decaying into a pair of τ -leptons in proton-proton collisions at s =13 TeV with the ATLAS detector

ATLAS Collaboration; Sultansoy, Saleh F. (American Physical Society, 2019)

A measurement of production cross sections of the Higgs boson in proton-proton collisions is presented in the H→ττ decay channel. The analysis is performed using 36.1 fb-1 of data recorded by the ATLAS experiment at the ...
Dealloyed Ruthenium Film Catalysts for Hydrogen Generation from Chemical Hydrides

Serin, Ramis B.; Abdullayeva, Nazrin; Sankir, Mehmet (MDPI AG, 2017)

Thin-film ruthenium (Ru) and copper (Cu) binary alloys have been prepared on a Teflon™ backing layer by cosputtering of the precious and nonprecious metals, respectively. Alloys were then selectively dealloyed by sulfuric ...
Decoration of 3D ZnO nanoelectrodes with CuInS2 for solar water splitting

Altaf, Cigdem Tuc; Yolacan, Demet; Sankir, Nurdan Demirci (Elsevier B.V., 2019)

This study reports the decoration of zinc oxide (ZnO) nanosheets with copper indium sulfide (CuInS2) via sequential metal deposition and post sulfurization methods for photoelectrochemical solar cell application. The three ...
Dijet azimuthal correlations and conditional yields in pp and p+Pb collisions at sNN =5.02 TeV with the ATLAS detector

ATLAS Collaboration; Sultansoy, Saleh F. (American Physical Society, 2019)

This paper presents a measurement of forward-forward and forward-central dijet azimuthal angular correlations and conditional yields in proton-proton (pp) and proton-lead (p+Pb) collisions as a probe of the nuclear gluon ...
Directional invisibility by genetic optimization

Bor, E.; Babayigit, C.; Kurt, Hamza; Staliunas, K.; Turduev, M. (Optical Society of America, 2018-12-01)

In this Letter, the design of a directional optical cloaking by a genetic algorithm is proposed and realized experimentally. A three-dimensional finite-difference time-domain method is combined with the genetic optimization ...
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 ...
Directly Copolymerized Disulfonated Poly (arylene ether sulfone) Membranes for Vanadium Redox Flow Batteries

Semiz, Levent; Sankir, Nurdan Demirci; Sankir, Mehmet (ESG, 2014-06)

For the first time with this study, membranes from directly copolymerized disulfonated poly(arylene ether sulfone) (BPSH 35) were utilized to replace NafionTM in vanadium redox flow batteries (VRFB). Direct copolymerization ...
Electron and photon energy calibration with the ATLAS detector using 2015-2016 LHC proton-proton collision data

ATLAS Collaboration; Sultansoy, Saleh F. (Institute of Physics Publishing, 2019)

This paper presents the electron and photon energy calibration obtained with the ATLAS detector using about 36 fb-1 of LHC proton-proton collision data recorded at s=13 TeV in 2015 and 2016. The different calibration steps ...