Başlık için Fizik Bölümü Koleksiyonu listeleme
Toplam kayıt 189, listelenen: 118-137
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Optical refracting properties, birefringence and order parameter in mixtures of liquid crystals: Direct smectic A - Isotropic and reverse isotropic - Smectic A phase transitions
(Elsevier, 2022)Due to the physical anisotropic and self-assembling nature, liquid crystalline materials holdvery important place in theoretical, experimental and applied physics. Besides, liquid crystals are important materials as working ... -
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 Defective Formations in Heterophase Regions of the Thermotropic Phase Transitions in Liquid Crystals
(Wiley-V C H Verlag Gmbh, 2019)A unique feature of phase transitions in liquid crystalline materials is the availability of heterophase regions. In such regions, the simultaneous coexistence of high temperature and low temperature phases takes place. ... -
Peculiarities of inversion walls and singular points in oriented textures of nematic mesophase
(Wiley-V C H Verlag Gmbh, 2009)In this work the nature and peculiarities of the inversion walls and singular points, which can spontaneously arise or can be stimulated in the homeotropic and planar oriented textures of the thermotropic nematogens, have ... -
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 ... -
Performance analysis of a multi crystalline Si photovoltaic module under Mugla climatic conditions in Turkey
(Pergamon-Elsevier Science Ltd, 2013)Commercially available, a multi crystalline silicon (mc-Si) photovoltaic (PV) module has been monitored outdoors under Mugla climatic conditions in Turkey. Electricity yield of this module is calculated from the uninterruptible ... -
Performance comparison of a double-axis sun tracking versus fixed PV system
(Pergamon-Elsevier Science Ltd, 2012)In the present study, performance results of two double axis sun tracking photovoltaic (PV) systems are analyzed after one year of operation. Two identical 7.9 kWp PV systems with the same modules and inverters were installed ... -
Phase Boundaries, Optical Refraction and Specific Electrical Conductivity Properties in Lyotropic Micellar L-1 Phase: Bicomponent Amphiphilic (DDTMABr plus HDTMABr) plus Water System
(Carl Hanser Verlag, 2018)In this work, complex investigations of the temperature and concentration behaviour of the optical refraction properties and specific electrical conductivity properties in lyotropic micellar L-1 phase have been carried ... -
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 ... -
Phase states and thermomorphologic, thermotropic, and magnetomorphologic properties of lyotropic mesophases: Sodium lauryl sulphate-water-1-decanol liquid-crystalline system
(Amer Physical Soc, 2010)Phase states in sodium lauryl sulphate-water-1-decanol lyotropic liquid-crystalline system have been investigated for different temperature ranges. The dependence of triangle phase diagram types, phase boundaries, and ... -
Photoluminescence Properties of a New Sm(III) Complex/PMMA Electrospun Composite Fibers
(Springer/Plenum Publishers, 2020)In this paper, a Sm(III) cluster-based 2D coordination polymer {[Sm(2-stp)center dot 3(H2O)]center dot(H2O)}(n), (where 2-stp = 2-sulfoterephthalate),1has been synthesized hydrothermally and doped into poly(methyl methacrylate ... -
Physical investigations of vanadium oxide thin films on p-Si substrate
(Springer, 2022)In this study, vanadium oxide coated thin films on the p-Si substrate were prepared by the sol-gel method using V2O5 powder as a precursor. The crystal structures, surface morphology, and content of the films were investigated ... -
Piezoelectric and magnetoelectric evaluations on PVDF/CoFe2O4 based flexible nanogenerators for energy harvesting applications
(SPRINGER, 2022)In this study, flexible PVDF/CoFe2O4 based nanogenerators were fabricated using composite fibers which were prepared by combining polyvinylidene difluoride (PVDF) and cobalt ferrite (CoFe2O4) nanoparticles (NPs: similar ... -
Piezoelectric and magnetoelectric properties of PVDF/NiFe2O4 based electrospun nanofibers for flexible piezoelectric nanogenerators
(ELSEVIER, 2022)In this study, flexible piezoelectric nanogenerators (PNGs) were fabricated using the composite fibers which were prepared by combining polyvinylidene difluoride (PVDF) and nickel ferrite (NiFe2O4) nanoparticles (NPs) at ... -
A practical and effective strategy for the thin and uniform carbon layer onto LiCoPO4 cathode surface in terms of the rate capability and cycle stability
(Pergamon-Elsevier Science Ltd, 2016)Nanoscale pure LiCoPO4 and LiCoPO4/C materials were successfully synthesized as excellent quality cathode materials for high-voltage and high energy density lithium-ion applications. These materials are simply produced by ... -
Preparation and Characterization of Urea/Formaldehyde/Rosa Canina sp. Seeds Composites
(Polish Acad Sciences Inst Physics, 2014)Urea-formaldehyde (UF) resin which is one of the most important wood adhesives is a polymeric condensation product of the chemical reaction of formaldehyde with urea, and considered as the most important type of adhesive ... -
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, ... -
Properties of ZnO layers deposited by ''photo-assisted'' spray pyrolysis
(Elsevier Science Bv, 1996)Layers of ZnO have been deposited onto glass substrates by ''photo-assisted'' spray pyrolysis using zinc chloride and zinc acetate as precursors in aqueous and non-aqueous solutions. The structure of these films has been ... -
PV outdoor tests and 12 years of Mugla experiences
(Wiley-V C H Verlag Gmbh, 2015)In this paper, the electricity yield of photovoltaic power plant applications in the main campus of Mugla Sitki Kocman University, Turkey is presented. There are four small scale grid connected photovoltaic power plants ... -
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 ...
