Browsing by Author "staya"
Now showing items 1-20 of 111
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A Fourier ellipsometer using rotating polarizer and analyzer at a speed ratio 1: 1
(Hindawi, 2010)We propose theoretically a spectroscopic ellipsometer in which the polarizer and the analyzer are rotating synchronously in the same direction with the same angular speed. -
A highly birefringent bend-insensitive porous core PCF for endlessly single-mode operation in THz regime: an analysis with core porosity
(Springer Science and Business Media LLC, 2021-03)"We present an endlessly single-mode, bend-insensitive and highly birefringent photonic crystal fbre (PCF) for efcient wave transmission in the terahertz (THz) spectrum. To facilitate fat dispersion and high birefringence, ... -
A NEW TECHNIQUE FOR ONE-DIMENSIONAL SCATTERING FROM DIRAC COMB
(الجامعة الإسلامية - غزة, 2003)Using the well-known matrix formulation of the reflection and transmission of electromagnetic waves by a stratified planner structure, we show that the reflection and transmission coefficients of any number of isotropic ... -
A polynomial approach for reflection, transmission, and ellipsometric parameters by isotropic stratified media
(2010)A polynomial approach for the calculation of the reflectance, the transmittance, and the ellipsometric parameters of a stratified isotropic planar structure is presented. We show that these parameters can be written in a ... -
A reverse symmetry optical waveguide sensor using a plasma substrate
(IOP Publishing, 2011)This paper presents an extensive theoretical treatment of an optical waveguide sensor consisting of thin dielectric film surrounded by an aqueous cladding and an ideal nonabsorbing plasma substrate. We consider the case ... -
A spectroscopic ellipsometer using rotating polarizer and analyzer at a speed ratio 1: 1 and a compensator
(Springer US, 2014)Ellipsometers have been widely used in thin film characterization. They have shown a high degree of accuracy. We here propose theoretically a rotating polarizer and analyzer ellipsometer at a speed ratio 1:1 with a fixed ... -
Aging of Oxygen-Treated Trimethylsilane Plasma-Polymerized Films Using Spectroscopic Ellipsometry
(Hindawi Publishing Corporation, 2011)Oxygen-treated trimethylsilane (TMS) plasma-polymerized films are investigated using rotating polarizer and analyzer ellipsometer. Aging process and composition of the samples are studied. Coordinated X-ray photoelectron ... -
Aldimine derivatives as photosensitizers for dye-sensitized solar cells
(2014-01-17)Five aldimine derivatives were prepared by condensation of the appropriate amine with salicylaldehyde (m1-m4) and 4-aminobenzoic acid with 2-thiophene carboxaldehyde (m5). A molar ratio of 1: 1 was used and the mixture was ... -
An extensive theoretical analysis of the 1: 2 ratio rotating polarizer–analyzer Fourier ellipsometer
(IOP Publishing, 2011)A full description of a scanning ellipsometer that incorporates the rotation of two polarizing elements simultaneously is presented in detail in this paper. Both the polarizer and the analyzer are rotating synchronously ... -
An improvement of scanning ellipsometer by rotating a polarizer and an analyzer at a speed ratio of 1: 3
(Taylor & Francis Group, 2011)We propose theoretically an improved spectroscopic ellipsometer to study the optical properties of solids. In this system, the polarizer and the analyzer are rotating synchronously in the same direction at a speed ratio ... -
An ultra-high birefringent and nonlinear decahedron photonic crystal fiber employing molybdenum disulphide (MoS2): A numerical analysis
(Elsevier BV, 2021-08)"A novel Decahedron photonic crystal fiber (DHn-PCF) is proposed. To sustain high birefringence and nonline- arity, the central elliptical core is filled with a highly nonlinear 2D material molybdenum disulphide (MoS2). ... -
Analysis of photonic band gap in photonic crystal with epsilon negative and double negative materials
(Elsevier BV, 2019-04)"The transmission properties of one-dimensional binary and ternary photonic crystals are theoretically investigated using transfer matrix method. The binary structure is composed of alternate layers of epsilon-negative and ... -
Analysis of proposed PCF with square air hole for revolutionary high birefringence and nonlinearity
(Elsevier BV, 2021-02)"A novel square shaped air hole based photonic crystal fiber (PCF) is proposed with three symmetrical rectangular slots in the core region. A highly nonlinear material Gallium phosphide (GaP) is doped in the middle ... -
Binary photonic crystal for refractometric applications (TE case)
(Springer India, 2018)In this work, a binary photonic crystal is proposed as a refractometric sensor. The dispersion relation and the sensitivity are derived for transverse electric (TE) mode. In our analysis, the first layer is considered to ... -
Cancer cell detector based on a slab waveguide of anisotropic, lossy, and dispersive left-handed material
(The Optical Society, 2021-09-20)"Cancer is a disease that takes place when human cells grow uncontrollably. When detected and cured early, it can be non-life-threatening. It becomes life-threatening in case of late discovery where it affects the ability ... -
Capacitance-voltage measurements of hetero-layer OLEDs treated by an electric field and thermal annealing
(Natural Sciences publishing, 2021)"Abstract: Capacitance-voltage (C-V) characterization of organic light-emitting diodes (OLEDs) having the structure ITO/ PVK (poly (9-Vinylcarbazole)/Rhodamine B dye/Pb is reported. The C-V curves provide more understanding ... -
Characteristics of electromagnetic waves in slab waveguide structures comprising chiral nihility film and left-handed material claddings
(Urban & Fischer, 2017)We analytically present the dispersion equation of an asymmetric three-layered chirowaveguides, in which the core and the claddings are different chiral materials. Then, we produce the dispersion equation for a symmetric ... -
Characteristics of left-handed multilayer slab waveguide structure
(2011)We examine analytically the propagation of TE-polarized waves in a four-layer slab waveguide structure. One of the layers is considered as a Left-handed or metamaterial with simultaneously negative ε and µ. The dispersion ... -
Characteristics of Symmetric Left-Handed Material Slab Waveguide
(IOSR Journals, 2016)In this paper, a symmetric three-layer slab waveguide is investigated. The guiding layer and the surrounding medium are assumed to be left-handed materials of negative permittivity and permeability. The dispersion equations ... -
Characterization of Poly (9-vinylcarbazole) and 8-Hydroxyquinoline Aluminum Using a Homemade Rotating Analyzer Ellipsometer
(عمادة البحث العلمي-الجامعة الاسلامية-غزة, 2011)In this work we use a homemade spectroscopic ellipsometer to study two commonly used organic materials; namely poly (9-vinylcarbazole)(PVK) and 8-hydroxyquinoline aluminum (Alq3). The ellipsometric parameters ψ and Δ are ...