Başlık için Fizik Bölümü listeleme
Toplam kayıt 1178, listelenen: 392-411
-
An exact treatment for the BEC with three-body recombination and time-dependent scattering length
(Academic Press Inc Elsevier Science, 2007)In this study, Gross-Pitaevskii (GP) equation with three-body recombination and with a time-dependent scattering length is investigated. It is shown that GP equation admits an exact solution for a special choice of the ... -
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 ... -
Experimental and computational studies on the absorption properties of novel formazan derivatives
(Scientific Technical Research Council Turkey-Tubitak, 2017)Eight novel 3-(4-(benzyloxy)phenyl)-5-(4-bromophenyl)-1-(4-substituted-phenyl)formazan (4a 4h) were synthesized by coupling of substituted phenylhydrazones with diazonium salts of 4-bromoaniline. The substituted phenylhydrazones, ... -
Experimental and DFT studies on the vibrational spectra of 1H-indene-2-boronic acid
(Elsevier Science BV, 2014)Stable conformers and geometrical molecular structures of 1H-indene-2-boronic acid (I-2B(OH)(2)) were studied experimentally and theoretically using FT-IR and FT-Raman spectroscopic methods. FT-IR and FT-Raman spectra were ... -
Experimental and theoretical investigation of a novel mononuclear copper(II) azido compound with tridentate (NNO) Schiff base
(Elsevier, 2015)The tridentate (NNO) Schiff base (HL), has been prepared by the condensation of 2-(aminomethyl)pyridine with 5-chloro-salicylaldehyde. The mononuclear [N-(2-pyridylmethyl)-3-chloro-salicylaldiminato] (azido) copper(II) ... -
An experimental and theoretical investigation on adsorption properties of some diphenolic Schiff bases as corrosion inhibitors at acidic solution/mild steel interface
(Elsevier Science BV, 2014)The effect of novel synthesized three Schiff bases, namely, 1,3-bis[2-(2-hydroxy benzylidenamino) phenoxy] propane (P1), 1,3-bis[2-(5-chloro-2-hydroxybenzylidenamino)phenoxy] propane (P2), and 1,3-bis[2-(5-bromo-2-hydrox ... -
Experimental and theoretical investigations of novel synthesized organo-silane compounds and modified mesoporous silica materials
(Elsevier Science BV, 2019)In this study, the novel compounds (2,5-dimethoxy-methanimine propyltriethoxysilane; S1 and 3-ethoxy-salicylaldimine propyltriethoxysilane; S2) derived from aminopropyltriethoxysilane (APTES) were synthesized by a simple ... -
Experimental and theoretical NMR study of 4-(3-cyclohexen-1-yl)pyridine
(Pergamon-Elsevier Science LTD, 2008)H-1, C-13, DEPT, COSY, NOESY and HETCOR NMR spectra of 4-(3-cyclohexen-1-yl)pyridine (4-Chpy) have been reported for the first time. H-1 and C-13 NMR chemical shifts of 4-Chpy (C11H13N) have been calculated by means of the ... -
Experimental and theoretical studies on tautomeric structures of a newly synthesized 2,2'(hydrazine-1,2-diylidenebis(propan-1-yl-1-ylidene)) diphenol
(Elsevier Science BV, 2018)In the present study, a single crystal of a Schiff base, 2,2'(hydrazine-1,2-diylidenebis(propan-1-yl-1-ylidene)) diphenol, was synthesized. The structure of the synthesized crystal was confirmed by H-1 and C-13 NMR ... -
Experimental Evidence of Long-Range Intramolecular Vibrational Energy Redistribution through Eight Covalent Bonds: NIR Irradiation Induced Conformational Transformation of E-Glutaconic Acid
(American Chemical Society, 2017)Long-range intramolecular-vibrational energy redistribution (IVR) driven conformational changes were investigated in a matrix-isolated open-chain, asymmetrical dicarboxylic acid, E-glutaconic acid. Although the analysis ... -
F-ab fragments imprinted SPR biosensor for real-time human immunoglobulin G detection
(Elsevier Advanced Technology, 2011)F-ab fragments imprinted surface plasmon resonance (SPR) chip was prepared for the real-time detection of human immunoglobulin G (IgG). In order to attach polymerization precursor on SPR chip, the SPR chip surface was ... -
Fabrication and electrical characterization of flower-like CdO/p-Si heterojunction diode
(IOP Publishing LTD, 2009)The electrical properties of a flower-like CdO/p-Si heterojunction diode have been investigated in the temperature range 80-400 K. The CdO thin film was deposited on p-type Si using the sol-gel spin coating method. The ... -
Fabrication and Optical Characterization of CdSe Thin Films Grown by Chemical Bath Deposition
(Polish Acad Sciences Inst Physics, 2015)Cadmium selenide thin films with different pH values (pH = 10, 11, 12 and 13) are produced on glass substrates at 50 degrees C for 3 h by chemical bath deposition technique. The structural, morphological and optical ... -
Fabrication of Ca-Mn-Nb-O compounds and their structural, electrical, magnetic and thermoelectric properties
(IOP Publishing LTD, 2018)CaMn1-xNbxO3-delta (0 <= x <= 1) were synthesized by conventional solid state reaction method. The structural properties were determined by FTIR, Raman, XRD, XAS measurements. The FTIR and Raman modes change by increasing ... -
Fabrication of p-Si/n-ZnO:Al heterojunction diode and determination of electrical parameters
(Elsevier Science BV, 2018)We present a fundamental experimental study of a microwave assisted chemical bath deposition (MW-CBD) method for Al doped ZnO films. Field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) spectroscopy ... -
A facile protocol for the preparation of 5-alkylidene and 5-imino substituted hydantoins from N,N '-disubstituted parabanic acids
(Pergamon-Elsevier Science LTD, 2012)A convenient procedure for the preparation of various substituted (thio)hydantoins is described. The method is based on Wittig and aza-Wittig reactions of parabanic acids with phosphonium ylides. The reactions occurred ... -
Facile two-step preparation of polystyrene/anatase TiO2 core/shell colloidal particles and their potential use as an oxidation photocatalyst
(Elsevier Science Sa, 2014)Titania and materials containing titania have received considerable attention due to their technological importance in many areas. In this study, anatase crystalline titania (TiO2) coated polystyrene (PS) colloidal particles ... -
Facile, efficient, and environmentally friendly alpha- and aromatic regioselective chlorination of toluene using KHSO5 and KCl under catalyst-free conditions
(Royal Soc Chemistry, 2015)Toluene was subjected to room-temperature chlorination with the KHSO5-KCl system in organic solvent-water mixtures. In a typical reaction, the amounts of toluene, KHSO5, and KCl were 1.0, 5.0 and 7.5 millimoles, respectively. ... -
Farklı pH Değerlerinde Elde Edilen Kadmiyum Sülfür Filmlerinin Fiziksel Özellikleri
(2017)Bu çalışmada, kimyasal banyo depolama metodu kullanılarak 80 °C banyo sıcaklığında cam tabanlar üzerine farklı pH değerlerinde (10,00; 10,10; 10,20; 10,30) kadmiyum sülfür yarıiletken filmleri elde edilmiştir. Elde edilen ... -
Fast frictionless expansion of an optical lattice
(Elsevier Science BV, 2012)We investigate fast frictionless expansion of an optical lattice with dynamically variable spacing (accordion lattice). We design an expansion trajectory that yields a final state identical to the initial state up to an ...