Güncel Gönderiler: Fen Fakültesi
Toplam kayıt 2379, listelenen: 1241-1260
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Power-loss mechanisms in surface passivated AlGaN/AlN/GaN heterojunctions
(Institute of Electrical and Electronics Engineers Inc., 2016)The surface passivation effect on the power-loss mechanisms in AlGaN/AlN/GaN heterostructures was investigated. The electron temperatures of hot electrons was obtained from the temperature and the applied electric field ... -
Inactivation of microorganisms with neon plasma jet at atmospheric pressure
(Journal of Pure and Applied Microbiology, 2016)A dielectric barrier discharge (DBD) plasma jet of neon (Ne) at atmospheric pressure and room temperatures was arranged under a high frequency ac power supply. We achieved to obtain an atmospheric pressure glow-like discharge ... -
Exciton states in a quantum dot with parabolic confinement
(2011)In this study the electronic eigenstructure of an exciton in a parabolic quantum dot (QD) has been calculated with a high accuracy by using Finite element method (FEM). We have converted the coordinates of electronlight-hole ... -
Representation of electromagnetic and gravitoelectromagnetic Poynting theorems in higher dimensions
(TUBITAK, 2014)This study investigates whether the electromagnetic and gravitoelectromagnetic energy conservation equations are obtained together by using octonion algebra or not. Maxwell and Maxwell-like equations for linear gravity ... -
Calculation of two neutrino double beta decay nuclear matrix elements for 128,130Te
(2006)Based on Pyatov-Salamov method, spin-isospin (Gamow-Teller) effective interaction strength parameter has been found self-consistently. Then, the problem has been solved within the framework of QRPA. Gamow-Teller matrix ... -
Biologically relevant molecules studied in low temperature inert matrices
(Springer Netherlands, 2014)Matrix isolation is a technique where gaseous atoms and molecules are trapped in an environment of solidified inert gases at temperatures close to absolute zero. The method was originally used to study free radicals and ... -
Elec tromagnetic energy conservation with complex octonions
(2012)Octonions are the eight dimensional hypercomplex numbers that form a noncommutative and nonassociative division algebra. In this study, a general framework for the real, complex octonions and their algebra are provided by ... -
FT-IR spectroscopic study of the Hofmann-Td-type clathrates: Ni(1,9-diaminononane)M'(CN)4·2G (M' = Cd or Hg, G = benzene, 1,2-dichlorobenzene or 1,4-dichlorobenzene)
(2007)New Hofmann Td-type clathrates in the form of Ni(1,9-diaminononane)M'(CN)4·2G (M' = Cd or Hg, G = benzene, 1,2-dichlorobenzene or 1,4-dichlorobenzene) were prepared in powder form and their infrared spectra are reported ... -
Investigations on the physical properties of the polycrystalline ZnS thin films deposited by the chemical bath deposition method
(2007)Transparent and polycrystalline zinc sulfide (ZnS) thin films were prepared by the chemical bath deposition (CBD) technique onto glass substrates deposited at 80 °C using aqueous solution of zinc acetate, thiourea, ... -
Variation of photoluminescence from Si nanostructures in SiO2 matrix with Si+ post implantation
(2007)Si nanoclusters were formed by 28Si ion implantation into SiO2 matrix and subsequently annealed at 1050 °C for 2 h under N2 ambient. The photoluminescence (PL) characteristics depend on the 28Si fluence. The PL signals ... -
Free electron in a laser field: The nonrelativistic solution
(2006)Schrodinger equation for a charged particle interacting with the plane-wave electromagnetic field is solved exactly. The exact analytic solution and the perturbative solution up to second order are compared -
Structural and optical properties of porous nanocrystalline Ge
(2008)Nanocrystalline Ge films were prepared by isotropic chemical etching on single-crystalline Ge substrates with 100 and 111 orientations. The structural and optical properties have been investigated by transmission electron ... -
Preparation of Sb-doped ZnO nanostructures and studies on some of their properties
(2008)Sb-doped ZnO nanostructures have been deposited onto glass substrates by a sol-gel method. The structural, optical and electrical properties of the Sb-doped ZnO films were characterized by various techniques including ... -
The isospin admixture of the ground state and the properties of the isobar analog resonances in deformed nuclei
(American Institute of Physics Inc., 2008)Within quasiparticle random phase approximation (QRPA), Pyatov-Salamov method for the self-consistent determination of the isovector effective interaction strength parameter, restoring a broken isotopic symmetry for the ... -
The study of dependence of the radial parts of 0-›0 + first forbidden ß-decay matrix elements on the parameters in Woods-saxon potential
(2008)In this paper, O-›0+ first forbidden ß-decay matrix elements have been calculated. For 206-214Pb›206-214Bi transitions relativistic M ±(?A,?=0) and nonrelativistic M±(jA, k=1,?=0)) matrix elements have been calculated. In ... -
Band gap energies of CdO:F semiconductor films produced by ultrasonic spray pyrolysis method
(2007)The fluorine doped cadmium oxide (CdO:F) samples have been deposited by ultrasonic spray pyrolysis method (USP). The absorption spectra of the samples showed that CdO:F is a direct band gap material. The direct optical ... -
Physicochemical characterization of natural and Na+-, K +-, Ca2+-and Mg2+-modified clinoptilolite from gördes (Manisa, Turkey)
(2009)Physicochemical characterization of the natural solid-phase Gördes clinoptilolite and of the Na+-, K+-, Ca2+-and Mg2+-modified forms of the mineral (as obtained through ion-exchange) by batch methods, X-ray diffractometry ... -
Effect of deposition temperature on the crystalline structure and surface morphology of ZnO films deposited on p-Si
(2010)Zinc oxide (ZnO) films were deposited on p-Si substrates by sol-gel spin coating method. Zinc acetate dihydrate (ZnAc), 2-methoxyethanol and monoethanolamine (MEA) were used as a starting material, solvent and stabilizer, ... -
NMR spectroscopic study and DFT calculations of GIAO NMR shieldings and 1JCH, spin-spin coupling constants of 1,9-diaminononane
(Chemical Society of Ethiopia, 2009)1H, proton coupled and decoupled l3C, DEPT, HETCOR NMR spectra, the magnitude of one bond 1Jch coupling constants and l3C NMR spin-lattice relaxation time (T1) of 1,9-diaminononane (danon, C9H22N2) have been reported for ... -
High-field electrical conduction in thin films of polyethylene
(1987)The voltage-current characteristics of thin film metal-polyethylene-copper structures in which copper is used as a top electrode are studied. The samples made with thermally vacuum-evaporated polyethylene and having a top ...
