Erişim şekli için "info:eu-repo/semantics/openAccess" Fizik Bölümü Koleksiyonu listeleme
Toplam kayıt 84, listelenen: 41-60
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Multiple energy synchrotron biomedical imaging system
(Iop Publishing Ltd, 2016)A multiple energy imaging system that can extract multiple endogenous or induced contrast materials as well as water and bone images would be ideal for imaging of biological subjects. The continuous spectrum available from ... -
N-Acetylglucoseamine modified alginate sponges as scaffolds for skin tissue engineering
(Tubitak Scientific & Technical Research Council Turkey, 2017)In the treatment of dermal wounds, wound-dressing materials prepared from natural mucopolysaccharides are widely used because of their advantages such as nonirritation, nontoxicity, and ease in topical application. In the ... -
The native and metastable defects and their joint density of states in hydrogenated amorphous silicon obtained from the improved dual beam photoconductivity method
(American Institute of Physics Inc., 2023)In this study, undoped hydrogenated amorphous silicon (a-Si:H) thin films deposited under moderate dilution ratios of silane by radio frequency plasma-enhanced chemical vapor deposition (RF-PECVD) have been investigated ... -
A new simulation model for inhomogeneous Au/n-GaN structure
(Pleiades Publishing Inc, 2016)The larger the device area, the more difficult to carry on homogeneity during the fabrication and following treatments. Structural inhomogeneity may indicate themselves in variations in local electronic device parameters. ... -
Non-isotropic angular distribution of Yb L alpha(1) and L alpha(2) lines following photoionization by linearly polarized radiation
(Iop Publishing Ltd, 2011)The angular distribution of Yb L alpha(1) and L alpha(2) lines after photoionization by a linearly polarized monochromatic photon beam from synchrotron radiation has been measured. The experiment was performed using a 5 x ... -
Optical properties of selenium sulfide thin film produced via chemical dropping method
(Springer, 2018)This paper describes the production of selenium sulfide (SeS2) crystalline thin film on commercial glass substrates, via chemical bath deposition. Transmittance, absorption, dielectric constant and refractive index of the ... -
Origins of Reverse Bias Currents in a Typical BPW34 Photodiode
(Scientific Technical Research Council Turkey-Tubitak, 2005)Measurements of the dark reverse current in a typical BPW34 silicon photodiode have been made in the temperature range 100-300 K at various reverse bias voltages ranging from 0 to 60 V. Various transport models have been ... -
Peculiarities of thermo-morphologic and thermotropic transformations of heterophase regions: nematic <-> isotropic phase transition in 4-n-Alkyl-4 '-cyanobiphenyl mesogens
(Natl Inst Optoelectronics, 2019)Important peculiarity of phase transitions in liquid crystalline materials is availability of the heterophase regions, in which low temperature and high temperature phases simultaneously take place. In this work, peculiarities ... -
Phase formation characteristics and magnetic properties of bulk Ni2MnGe Heusler alloy
(Elsevier Science Sa, 2015)We have systemically studied the effects of annealing temperature and alloy composition on the structural and magnetic properties of bulk Ni2MnGe and Ni2.1Mn0.9Ge Heusler alloys. We have observed that both annealing ... -
Production and characterization of liquid crystal/polyacrylonitrile nano-fibers by electrospinning method
(Springer Link, 2021)We present that high birefringent nematic liquid crystal, 4-n-pentyl-4'-cyanobiphenyl, was incorporated into the polyacrylonitrile precursor which has a strong polar cyano group so as to produce electrospun nano-fibers, ... -
Quantum Hall effect in a high-mobility two-dimensional electron gas on the surface of a cylinder
(Amer Physical Soc, 2009)The quantum Hall effect is investigated in a high-mobility two-dimensional electron gas on the surface of a cylinder. This special topology leads to a spatially varying filling factor along the current path. The resulting ... -
Raman scattering in layered CdInGaS4
(2004)Raman scattering spectra of CdInGaS4 crystals grown by the chemical transport method were measured at room and liquid-nitrogen temperatures. Band pairs at 29-38, 43-48 and 60-65 $cm^{-1}$ are reported for the first time. ... -
Real gamma scattering at TESLA x N collider
(2001)The proposal for measurement of polarized gluon and quark distributions in scattering of polarized real y beam on polarized nuclear target have been considered. High energy y beam is obtained by backscattering of laser ... -
Refractive and birefringent properties and order parameter of nematic liquid crystal at the direct and reverse nematic <-> isotropic liquid phase transition
(Natl Inst Optoelectronics, 2016)Temperature dependences of the refractive indices, birefringence and molecular polarizability in large temperature interval and especially in the region of the direct nematic mesophase - isotropic liquid (for the heating ... -
Refractive and birefringent properties of 4-alkyl-4 '-oxycyanobiphenyls at direct and reverse phase transitions
(Taylor & Francis Ltd, 2017)Studies of temperature behavior of the mean refractive index, ordinary and extraordinary refractive indices, and birefringence have been carried out for three nematogens. The thermo-morphologic properties of the biphasic ... -
Regimes of current transport mechanisms in CdS/CdTe solar cells
(Iop Publishing Ltd, 2019)Forward bias recombination (current transport) mechanisms have been evaluated for thin film solar cells and correlated to the in-gap trap levels present. Here CdTe/CdS devices were chosen as an archetypal example of a ... -
Reversible and irreversible effects after oxygen exposure in thick (> 1 mu m) silicon films deposited by VHF-PECVD on glass substrates investigated by dual beam photoconductivity
(Canadian Science Publishing, Nrc Research Press, 2014)Metastability and instability effects due to oxygen exposure in thick intrinsic hydrogenated microcrystalline silicon films deposited by very high frequency plasma enhanced chemical vapour deposition on smooth glass ... -
Screening theory based modeling of the quantum Hall based quasi-particle interferometers, defined at quantum dots
(Elsevier Science Bv, 2012)In this work, we investigate the spatial distributions and the widths of the incompressible strips, i.e. the edge-states. The incompressible strips that correspond to nu = 1,2 and 1/3 filling factors are examined in the ... -
Searching for Color Octet Leptons in Lepton-Hadron Collisions
(2003)We study the resonance production of color octet leptons ${l_8}$ predicted by composite preon models of leptons and quarks at lepton-hadron colliders such as TESLA x HERA,$\mu p$ and Linac-LHC with the energy of about 1-10 ... -
The self-consistent calculation of exchange enhanced odd integer quantized Hall plateaus within Thomas-Fermi-Dirac approximation
(Elsevier Science Bv, 2010)We study the emergent role of many-body effects on a two-dimensional electron gas (2DEG) within the Thomas-Fermi-Dirac-Poisson approximation, including both the exchange and correlation interactions in the presence of a ...