Güncel Gönderiler: Fizik Bölümü
Toplam kayıt 666, listelenen: 381-400
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Pyridinium boronic acid salts in crystal synthesis
(Royal Soc Chemistry, 2006)A series of salts of pyridinium boronic acids: [HNC5H4B(OH)(2)- 4](2)[M(S2C2O2)(2)] center dot 2H(2)O (M = Cu 1, Ni 2, Pd 3, Pt 4), [HNC5H4B(OH)(2)- 4](2)[Pt(O2C2O2)(2)] ( 5); [HNC5H4B(OH)(2)- 3](2) [M(S2C2O2)(2)] (M = Cu ... -
Cern lep indications for two light higgs bosons and the u(1)' model
(Amer Physical Soc, 2006)Reanalyses of LEP data have shown preference to two light CP-even Higgs bosons. We discuss implications of such a Higgs boson spectrum for the minimal supersymmetric model extended by a standard model singlet chiral ... -
Thermal behavior of the roughened Cu(110) surface
(Pergamon-Elsevier Science Ltd, 2006)The roughened Cu(110) surface was prepared by annealing the clean surface at various temperatures ranging from 700 to similar to 1000 K. A significant drop in intensity of reflection anisotropy spectroscopy (RAS) peak at ... -
Inverse photoemission spectroscopy of the unoccupied electronic structure of Na/Cu(110)
(Pergamon-Elsevier Science Ltd, 2006)The unoccupied electronic states of Na thin films on a Cu(110) substrate have been measured by inverse photoemission spectroscopy (WES). The WES spectrum provides the intensity of the unoccupied states, which decreases ... -
Specific power loss comparisons of magnetic strips using standard Epstein frame
(Korean Physical Soc, 2002)Amorphous magnetic materials are now competing in some of the markets traditionally monopolized by electrical steels. A variety of grain-oriented silicon-iron and amorphous magnetic materials have been under investigation. ... -
Mobility of two-dimensional electrons in an AlGaN/GaN modulation-doped heterostructure
(Wiley-V C H Verlag Gmbh, 2003)The results of experimental and theoretical studies concerning the temperature dependence of electron mobility in a two-dimensional electron gas (2DEG) confined near the interface of an AlGaN/GaN heterostructure are ... -
Synthesis, crystal structure and spectroscopic properties of a dinuclear nickel(II) complex bridged by an alkoxide and a mu-pyrazolate ligand
(Walter De Gruyter Gmbh, 2003)A nickel(II) complex, [Ni-2(L)(3,5-prz)1, (L = 1,3-bis(2-hydroxy-5-bromosalicylidene amino) propan-2-ol-, 3,5-prz = 3,5-dimethylpyrazolate), was synthesized and characterized by means of elemental analysis, infrared and ... -
Pyroelectric and conduction properties of Z-type calix[4] acid Langmuir-Blodgett films
(Amer Scientific Publishers, 2005)Non-centrosymmetric Z-type Langmuir-Blodgett (LB) films were prepared by transferring a calix[4] acid monolayer from a subphase of Millipore water (18 M Omega cm(-1)) onto aluminised glass substrates. Electrical measurements ... -
Formation of nanocomposite Langmuir-Blodgett alternate multilayers
(IEEE-Inst Elec Eng, 2003)Non-centrosymmetric alternate-layer Langmuir Blodgett (LB) films of stearic acid and eicosylamine molecules were treated with a twelve-hour-long exposure of hydrogen sulphide (H2S) gas. Surface plasmon resonance (SPR) ... -
GaN/AlGaN back-illuminated multiple-quantum-well Schottky barrier ultraviolet photodetectors
(Pergamon-Elsevier Science Ltd, 2003)We report on characterization and operation principle of a set of GaN/AlGaN multiple-quantum-well (MQW) photovoltaic detectors. The structures were grown by molecular beam epitaxy (MBE) on c-plane sapphire substrates and ... -
Electrodeposited cobalt films: The effect of deposition potentials on the film properties
(Natl Inst Optoelectronics, 2013)A series of cobalt films were deposited on copper substrates at different deposition potentials between -1.0 V and -1.6 V and their properties were investigated. The proper deposition potentials were obtained from the ... -
A comprehensive review of ZnO materials and devices
(Amer Inst Physics, 2005)The semiconductor ZnO has gained substantial interest in the research community in part because of its large exciton binding energy (60 meV) which could lead to lasing action based on exciton recombination even above room ... -
Momentum relaxation of electrons in n-type bulk GaN
(Ademic Press Ltd-Elsevier Science Ltd, 2003)We report on Hall mobility and carrier density measurements on n-type GaN epilayers grown on sapphire by MBE. The results are discussed using a theoretical model that takes into account the most important scattering ... -
Poly(methyl methacrylate) monolayers at the air-water interface
(Elsevier Science Bv, 2005)Several poly(methyl methacrylate) (PMMA) molecules with various chain numbers has been synthesised using Emulsifier-free emulsion polymerisation method. Langmuir-Blodgett thin film technique is an excellent method to ... -
Sol-gel derived nanocrystalline titania thin films on silicon
(Iop Publishing Ltd, 2005)Electrical characteristics of sol-gel derived titanium dioxide (TiO2) as insulating layers were investigated by making capacitance and leakage current measurements in metal-insulator-semiconductor configurations. The ... -
Spun thin films of poly(methyl methacrylate) polymer for benzene sensing
(Iop Publishing Ltd, 2005)Thin films of poly(methyl methacrylate) (PMMA) were deposited on suitably prepared substrates by spinning the spreading solution in chloroform at 3000 rpm for atomic force microscopy and surface plasmon resonance studies. ... -
Characterization of a novel 1,3-bis(p-iminobenzoic acid)indane Langmuir-Blodgett film for organic vapor sensing
(Amer Scientific Publishers, 2005)In the present paper we report about the Langmuir-Blodgett thin film characterization and organic vapor sensing properties of a novel 1,3-bis(p-iminobenzoic acid)indane (IBI) containing polar carboxylic acid groups. LB ... -
Uniaxial in-plane magnetic anisotropy in silicon-iron films prepared using vacuum coating plant (VCP)
(E D P Sciences, 2005)The novel VCP system is a mobile physical deposition method to deposit metallic/magnetic films using various source materials including powder, lump, pre-alloyed ingots and wires. The VCP system consists of a large deposition ... -
Pyroelectric figure of merit for a calix [4] acid/amine alternate layer Langmuir-Blodgett film
(Elsevier Science Bv, 2005)In this work calix [4] acid (A) has been deposited alternately with calix [4] amine (B) using the LB film deposition technique to form a non-centrosymmetric ABABA... molecular architecture. Pyroelectric and dielectric ... -
Phenomenological issues in supersymmetry with nonholomorphic soft breaking
(Amer Physical Soc, 2005)We present a through discussion of motivations for and phenomenological issues in supersymmetric models with minimal matter content and nonholomorphic soft-breaking terms. Using the unification of the gauge couplings and ...
