Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 18 of 18 for “"DIELECTRIC MEDIA"”.
-
Quantum non-contact friction in resonant dielectric media
… force induced between two isotropic planar dielectric slabs which obey a plasma model dielectric function using scalar electromagnetism. All computations are carried out at zero temperature. Strong constraints on the integration parameters which define the friction force are derived and …
-
Terahertz time domain methods for material characterization of layered dielectric media
Material characterization methods for layered dielectric media are highly sought after in many fields including nondestructive evaluation, structural health monitoring, security imaging, biological tissue inspection and agricultural and industrial quality assurance. On the other hand, the still …
-
Heats of Dissolution of Several Imidazolium-Based Ionic Liquids into Low Dielectric Media
Ionic liquids (ILs) are salts that are liquid at or near room temperature. They have unique properties since they are completely composed of ions and therefore have many potential applications. This thesis research focuses on the properties of ILs in low polarity solvent, chloroform (CHCl3). The …
-
Asymptotic and numerical analysis of time-dependent wave propagation in dispersive dielectric media that exhibit fractional relaxation
… pulse propagation through anomalously dispersive dielectric media. The Havriliak-Negami (H-N) and Cole-Cole (C-C) models capture the non-exponential nature of such dielectric relaxation phenomena, which is manifest in a variety of dispersive dielectric media. In the C-C model, the dielectric …
-
Design and fabrication of sharp bend photonic crystal slab waveguides
… which are periodic arrangement of layers of dielectric media. Scattering at the interface of the different layers produces a band gap for photons. The current effort to make integrated optical chips requires guiding light around sharp corners with a radius of curvature on the order of a …
-
Double resolution microwave holography
… The possibility of imaging objects concealed by dielectric media has been demonstrated, and certain effects caused by the "phase-only" nature of the hologram can be explained.
-
Optimum Performance of UHF RFID Tags in Dielectric Environment
… of the tag degrades when placed on conductive or dielectric objects. While RFID tags near metal have been extensively evaluated in the literature, tags on and in dielectric media have received less scrutiny and rigorous evaluation. In this thesis, we develop a rigorous theoretical model for the …
-
Silicon rich nitride for silicon based laser devices
… of tli~ excitation mechanism of Er in dielectric media by optical and electrical pumping methods impedes the progress of the research activities in this area. Silicon rich nitride (SRN) has been investigated as a strong candidate for silicon based laser devices. SRN has many advantages …
-
Conservation Laws and Electromagnetic Interactions
… forces and act at the interface between dielectric media. Without structuring the light field, forward action is provided by the conventional radiation pressure while a backward movement can be achieved through the natural enhancement of linear momentum. If the symmetry of scattered field …
-
Path-integral analysis of passive, graded-index waveguides applicable to integrated optics
… scalar wave propagation in weakly inhomogeneous media of the type encountered in passive integrated-optical communication devices. Most of the devices considered in this work are simple models for graded-index waveguide structures, such as tapered and coupled waveguides of a wide variety of …
-
Computational and Spectroscopic Determination of Lithiated Benzylic Nitriles in THF/HMPA Solution
… nitrile-stabilized carbanions as reactive intermediates for selective carbon-carbon bond formation has prompted numerous studies toward characterization of the solution structure of these nucleophiles. In hopes of eventually gaining a better understanding of the structural properties which may …
-
Analysis of Mueller matrices of metamaterials and multiferroics
… spectra of complex materials such as magnetic-dielectric media, magnetoelectric and multiferroic crystals, materials with intrinsic chirality, and metamaterials are studied. These media are important both for: (i) their interesting optical effects, such as Negative Index of Refraction (NIR) and …
-
Generation and imaging of structural laser beams for optical trapping of airborne particles and light-matter interaction applications.
… cylindrical microexplosion in transparent dielectric media. A comparison between numerical modelling and the experimentally constructed BG beam using a commercially available axicons reveals that the origin of the observed undesirable intensity modulations along the beam propagation is due …
-
Generation and imaging of structural laser beams for optical trapping of airborne particles and light-matter interaction applications.
… cylindrical microexplosion in transparent dielectric media. A comparison between numerical modelling and the experimentally constructed BG beam using a commercially available axicons reveals that the origin of the observed undesirable intensity modulations along the beam propagation is due …
-
Effect of Compression Force on Agglomeration of Micronized Active Pharmaceutical Ingredients: Techniques to Prevent API Agglomeration During Compression
… compacts soaked and dried in solvents of various dielectric media. Prevention of micronized particle agglomeration during compression was studied by using particle agglomeration inhibitors like PEG 3350, Lutrol F68 micro, hydroxyl propyl starch polymer and by various treatment methods like …
-
Active and Fast Tunable Plasmonic Metamaterials
… the interface between noble metal particles and dielectric media, collective oscillations of the free electrons in the metal particles can be resonantly excited, known as plasmon resonances. This work considered two plasmon resonances: localised surface plasmon resonances (LSPRs) and …
-
Thin-Film Polymer Nanocomposites Composed of Two-Dimensional Plasmonic Nanoparticles and Graphene
… This dissertation presents i) the effects of dielectric media on the optical properties of plasmonic nanoparticles, ii) the sensing of polymer brush formation on nanoparticles, iii) the fabrication of plasmonic nanocomposite thin-films with controlled optical properties, and iv) the …
-
ΕΠΙΛΥΣΗ ΤΟΥ ΠΡΟΒΛΗΜΑΤΟΣ ΣΚΕΔΑΣΗΣ ΑΠΟ ΣΚΕΔΑΣΤΗ ΤΥΧΑΙΑΣ ΓΕΩΜΕΤΡΙΑΣ ΜΕΣΑ ΣΕ ΣΤΡΩΜΑΤΟΠΟΙΗΜΕΝΟ ΜΕΣΟ ΜΕ ΤΗΝ ΒΟΗΘΕΙΑ ΤΩΝ ΔΥΑΔΙΚΩΝ ΣΥΝΑΡΤΗΣΕΩΝ GREEN
… PRESENT THESIS THE PROBLEM OF SCATTERING BY A DIELECTRIC SCATTERER LOCATED INSIDE A STRATIFIED MEDIUM IS TREATED, BOTH ANALYTICALLY AND NUMERICALLY. THE ANALYSIS MAKES USE OF DYADIC GREEN'S FUNCTIONS (DGF), THE THEORY AND PROPERTIES OF WHICH ARE THOROUGHLY INVESTIGATED. IN THE FIRST PART OF …