Browsing Physics / Fizik by Title
Now showing items 402-421 of 438
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Temperature dependence of electrical conductivity in double-wall and multi-wall carbon nanotube/polyester nanocomposites
(Springer, 2007-12)The aim of this study is to investigate temperature dependence of electrical conductivity of carbon nanotube (CNT)/polyester nanocomposites from room temperature to 77 K using four-point probe test method. To produce ... -
Terahertz wave emission from intrinsic Josephson junctions in high- Tc superconductors
(IOP Publishing, 2009)Recently, we experimentally demonstrated that rectangular mesa structures of intrinsic Josephson junctions (IJJ) in Bi2Sr2CaCu 2O8+d (Bi2212) can be used as a compact solid-state generator of continuous, coherent and ... -
Terahertz wave emission from layered superconductors: Interferometer measurements
(IEEE, 2011)Rectangular Bi2Sr2CaCu2O 8+δ (Bi2212) mesa structures were fabricated on as-grown Bi2212 single crystal superconductors using standard photolithography and Ar ion beam etching techniques. We have performed c-axis resistance ... -
Tevatron Higgs mass bounds: Projecting U(1)′ models to LHC domain
(Elsevier, 2010-09)We study Higgs boson masses in supersymmetric models with an extra U(1) symmetry to be called U(1)′. Such extra gauge symmetries are urged by the Μ problem of the MSSM, and they also arise frequently in low-energy ... -
Theory of optical properties of graphene quantum dots
(Wiley, 2016-01)We present here a theory of the optical properties of graphene quantum dots (GQDs) with tunable band gaps by lateral size confinement, from UV to THz. Starting from the Hartree-Fock ground state, we construct the correlated ... -
Thermal management in large Bi2212 mesas used for terahertz sources
(IEEE, 2009-06)We present a thermal analysis of a patterned mesa on a Bi 2Sr2CaCu2O8 (Bi2212) single crystal that is based on tunneling characteristics of the c-axis stack of ∼800 intrinsic Josephson junctions in the mesa. Despite the ... -
Thermal stability of the high-N solid-solution layer on stainless steel
(Elsevier, 2002-09)Low-energy, high-flux N ion implantation into austenitic stainless steel held at approximately 400 °C results in dramatic improvements in the tribological properties due to sufficiently large N layer thicknesses and ... -
Thermally and optically tunable sub-terahertz superconducting fishnet metamaterial
(Elsevier, 2018-01)In this paper, a novel fishnet metamaterial structure is designed and analyzed under different material combinations and under different active controlling techniques. The results indicate that, the proposed fishnet ... -
Thermodynamics of regular black holes with cosmic strings
(Springer, 2018-09)In this article, the thermodynamics of regular black holes with a cosmic string passing through them is studied. We will observe that the string has no effect on the temperature as well as on the relation between entropy ... -
Thermostable tensoresistors of Co doped GaSb-FeGa1.3 eutectic composites
(Elsevier, 2008-10-03)The microstructure and tensoresistive properties of GaSb-FeGa1.3 eutectic composites doped with 0.1% Co have been investigated. It was found that the Co impurity atoms mainly accumulate in the metallic inclusions. The ... -
Thin film like terahertz bolometric detector on Bi2212 single crystal
(Springer, 2016-06-01)In this study, we developed a microbolometer chip fabricated from high temperature superconducting Bi2Sr2CaCu2O8+δ (Bi2212) single crystals for the terahertz (THz) detection. For the manufacturing of the microbolometer ... -
Thinning CsPb2Br5 perovskite down to monolayers: Cs-dependent stability
(American Physical Society, 2017-10)Using first-principles density functional theory calculations, we systematically investigate the structural, electronic, and vibrational properties of bulk and potential single-layer structures of perovskitelike CsPb2Br5 ... -
Time reconstruction and performance of the CMS electromagnetic calorimeter
(IOP Publishing, 2010)The resolution and the linearity of time measurements made with the CMS electromagnetic calorimeter are studied with samples of data from test beam electrons, cosmic rays, and beam-produced muons. The resulting time ... -
TiS3 nanoribbons: Width-independent band gap and strain-tunable electronic properties
(American Physical Society, 2015-08-10)The electronic properties, carrier mobility, and strain response of TiS3 nanoribbons (TiS3 NRs) are investigated by first-principles calculations. We found that the electronic properties of TiS3 NRs strongly depend on the ... -
Towards the solution of cosmological constant and zero point energy problems through metric reversal symmetry
(IOP Publishing, 2009)In this talk I review my studies on metric reversal symmetry and their further implications. The talk is mainly concentrated on the relevance of the metric reversal symmetry to the solutions of the cosmological constant ... -
Triple-star candidates among the Kepler binaries
(IOP Publishing, 2013-05)We present the results of a search through the photometric database of Kepler eclipsing binaries looking for evidence of hierarchical triple-star systems. The presence of a third star orbiting the binary can be inferred ... -
Tuning electronic and magnetic properties of monolayer α-RuCl3 by in-plane strain
(Royal Society of Chemistry, 2018)By employing density functional theory-based methods, the structural, vibrational, electronic, and magnetic properties of monolayer α-RuCl3 were investigated. It was demonstrated that ferromagnetic (FM) and zigzag-antife ... -
Tuning the magnetic anisotropy in single-layer crystal structures
(American Physical Society, 2015-09)The effect of an applied electric field and the effect of charging are investigated on the magnetic anisotropy (MA) of various stable two-dimensional (2D) crystals such as graphene, FeCl2, graphone, fluorographene, and ... -
Tuning thermal transport in graphene via combinations of molecular antiresonances
(Elsevier, 2018-12)We propose a method to engineer the phonon thermal transport properties of low dimensional systems. The method relies on introducing a predetermined combination of molecular adsorbates, which give rise to antiresonances ... -
Tunneling in polymer quantization and the Quantum Zeno Effect
(Elsevier, 2014-09)As an application of the polymer quantization scheme, in this work we investigate the one-dimensional quantum mechanical tunneling phenomenon from the perspective of polymer representation of a non-relativistic point ...
