Browsing by Department "Izmir Institute of Technology. Physics"
Now showing items 1-20 of 297
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1/f noise in amorphous silicon and silicon-germanium alloys
(SPIE, 2003)We report measurements of conductance noise of a-Si1-XGeX:H in two different geometries; one where the current flow is transverse to the surface and the other longitudinal to it. Because of the large increase in sample ... -
1/f Noise in doped and undoped amorphous silicon
(Elsevier, 2000-05)We measured the spectrum of conductance fluctuations in n-type, p-type, and undoped hydrogenated amorphous silicon (a-Si:H) as a function of temperature. In general, the spectra can be fit to a power law, 1/fα, although ... -
1/f noise in hydrogenated amorphous silicon-germanium alloys
(Institute of Electrical Engineers, 2003-08)Measurements were made of conductance noise of a-Si:H and a-Si 1-xGex:H in two different geometries: one where the current flow is transverse to the surface and the other where it is longitudinal to the surface. Because ... -
1/f-noise study of undoped intrinsic hydrogenated amorphous silicon thin films
(American Physical Society, 1999)Conductance fluctuations in four samples of undoped intrinsic hydrogenated amorphous silicon (a-Si:H) were measured in the temperature range of 450 K to 500 K and for frequencies from 2 Hz to 3 kHz. The noise spectra divide ... -
1/Nc expansion and anomaly cancellation in the presence of electroweak interactions
(Institute of Physics Publishing, 1998-03)We study the question of a consistent formulation of the 1/Nc expansion in the presence of electroweak interactions. We show that in some cases the previous formulation leads to an unrealistic picture. We improve the scheme. ... -
Abelian-Non Abellian mixing and cosmic inflation in Born-Infeld type gravity
(Izmir Institute of Technology, 2013)General Relativity (GR), which forms the basic framework for understanding cosmological and astrophysical phenomena, is based solely on general covariance. Therefore, the theory admits extensions regarding various phenomena ... -
Absence of pseudogap in heavily overdoped Bi2Sr2CaCu2O8+δ from tunneling spectroscopy of break junctions
(Institute of Physics Publishing, 2002-05)We report tunneling spectroscopy of superconductor-insulator-superconductor break junctions on heavily overdoped Bi2Sr2CaCu2O8+δ with Tc = 56 K. At T ≪ Tc, the junction conductances display well-defined quasiparticle peaks ... -
Absolute properties of the binary system BB pegasi
(American Astronomical Society, 2007-08)We present ground-based photometry of the low-temperature contact binary BB Peg. We collected all the times of mid-eclipse available in the literature and combined them with those obtained in this study. Analyses of the ... -
Adaptation of digital electronic into detector systems NUMEXO2 in exotic nuclei research
(Izmir Institute of Technology, 2017-07)The main purpose of this thesis is to introduce and show the performance and capabilities of the newly developed digital electronic namely NUMEXO2, which has been tested, coupled with EXOGAM2 (EXOtic GAMma array) detector ... -
Adsorption and diffusion characteristics of lithium on hydrogenated α- and β-silicene
(Beilstein-Institut Zur Forderung der Chemischen Wissenschaften, 2017-08)Using first-principles density functional theory calculations, we investigate adsorption properties and the diffusion mechanism of a Li atom on hydrogenated single-layer α- and β-silicene on a Ag(111) surface. It is found ... -
Affine dynamics with torsion
(Izmir Institute of Technology, 2016-07)In this study, we give a thorough analysis of a general affine gravity with torsion. After a brief exposition of the affine gravities considered by Eddington and Schr¨odinger, we construct and analyze different affine ... -
Affine inflation
(American Physical Society, 2017-06)Affine gravity, a gravity theory based on affine connection with no notion of metric, supports scalar field dynamics only if scalar fields have nonvanishing potential. The nonvanishing vacuum energy ensures that the ... -
Analysis of interface states of the pentacene organic thin-film phototransistor by conductance technique
(Elsevier, 2009-02)A pentacene thin-film transistor with a channel width of 300 μm and a channel length of 30 μm has been successfully fabricated on n-Si substrate with thermally oxidized SiO2 as a gate insulator. The photovoltaic and interface ... -
Analytical approaches to the delta-Eddington model of the radiative transfer through vertically inhomogeneous optical depths
(Elsevier, 2008-04)Analytical approaches have been developed for one-dimensional monochromatic delta-Eddington radiative transfer equation through a vertically inhomogeneous medium. They are based on the solution of the Riccati equation that ... -
Angle resolved vibrational properties of anisotropic transition metal trichalcogenide nanosheets
(Royal Society of Chemistry, 2017-03)Layered transition metal trichalcogenides (TMTCs) are a new class of anisotropic two-dimensional materials that exhibit quasi-1D behavior. This property stems from their unique highly anisotropic crystal structure where ... -
Angular momentum loss by magnetic braking and gravitational radiation in relativistic binary stars
(International Conference Recent Advances in Natural Language Processing, RANLP, 2008)Angular momentum loss (AML) mechanisms and dynamical evolution owing to magnetic braking and gravitational radiation in relativistic binary stars (RBS) are studied with use of physical parameters collected from the literature. ... -
Angular momentum loss in polars
(Cambridge University Press, 2009-08)We discuss the possible angular momentum loss mechanisms in AM Her type cataclysmic variables and their corresponding mass loss rates using the observed physical parameters of them. -
The anticorrelated nature of the primary and secondary eclipse timing variations for the kepler contact binaries
(IOP Publishing, 2013-09)We report a study of the eclipse timing variations in contact binary systems, using long-cadence lightcurves from the Kepler archive. As a first step, observed minus calculated (O-C) curves were produced for both the primary ... -
Antistatic applications: Metal coated fibers by magnetron sputtering
(Izmir Institute of Technology, 2011)The utilization of textile materials with nanotechnology is increasing in many industries especially for automobile, medical and health care. These materials have recently been of increasing interest to both the academic ... -
Application of self assembled monolayer technique to imporove hole transport in organic leds
(Izmir Institute of Technology, 2011)This thesis concentrates on the fabrication and characterization of highly efficient Organic Light-Emitting Diode (OLED) with surface modification of indium tin oxide (ITO) anodes by using self-assembled monolayer (SAM) ...
