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Showing 1 to 17 of 17 for “"light scattering techniques"”.
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Inversion of Light Scattering Measurements for Particle Size and Optical Constants
Light scattering techniques have proven to be valuable tools in determining the size and optical properties of aerosol particles. Laser light scattering techniques can be used unobtrusively in harsh environments, so the development and improvement of these techniques is of great interest. The …
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Light Scattering Studies of Heavy Fermion and High T(c) Superconductors
In this thesis, light scattering techniques are used to probe the diverse excitation spectra of heavy fermion and high T$\sb{\rm c}$ superconductors.
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I. Raman scattering and x-ray diffraction study of annealing effects on confined LO and folded LA phonons in gallium arsenide-aluminum arsenide superlattices. II. Picosecond light scattering studies of relaxation and tunneling in gallium arsenide/aluminum(x)gallium(1-x)arsenide multiple quantum well structures
We have used light scattering techniques to probe the vibrational properties of GaAs/AlAs superlattices and the dynamics of electrons in GaAs/Al$\sb{\rm x}$Ga$\sb{\rm 1-x}$As multiple quantum well structures.
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Light scattering studies of heavy fermion and high Tc superconductors
In this thesis, light scattering techniques are used to probe the diverse excitation spectra of heavy fermion and high T c superconductors. Our studies of heavy fermion compounds principally demonstrate the efficacy of using light scattering techniques to probe spin fluctuations and crystal field …
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Substrate curvature measurement system
… operation of the circuit. Different measurement techniques are available to measure the spherical deformation of substrates, with the latest known technique being a combination of a laser beam deflection and light scattering techniques. Many of the existing techniques reveal shortcomings, one of …
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Polymer hydrogel nanoparticles and their networks
… of microgel particles, measured by dynamic light scattering, have been correlated with synthesis conditions including surfactant concentration, polymer concentration, and reaction temperature. The swelling and phase transition properties of resultant HPC microgels have been analyzed using …
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Fabrication and light scattering study of multi-responsive nanostructured hydrogels and water-soluble polymers.
… (C18) modified surface are investigated using light scattering techniques in various solvents. The polymer critical aggregation concentration (cac) strongly depends on solvent polarity, decreasing as the solvent becomes more hydrophobic.
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Obesity and neuroinflammation : the impact of adipocyte-derived extracellular vesicles on microglial cell signalling
… Using morphological and cell viability techniques, two microglial cell lines, HMC3 and BV2 cells were characterised under normal and inflammatory conditions (1μg/mL and 10μg/mL of LPS). AT-EVs were isolated and characterised using ultracentrifugation and light scattering techniques …
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Synthesis and characterisation of vinyl block copolymers
… methyl iodide) diblock copolymers using static light scattering techniques, showed the formation of star-shaped 'reverse' micelles when placed in toluene. Temperature effects on micellization behaviour are only exhibited for the unquaternised micelles, which showed characterisically lower …
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Inelastic light scattering studies of quantum phase transitions in CuxTiSe2 and multiferroic TbMnO3
Abstract In this dissertation, inelastic (Raman) light scattering techniques are used to probe the temperature- and magnetic-field-induced phase transitions of two strongly correlated systems – the magnetoelectric multiferroic TbMnO3 and the layered dichalcogenide TiSe2 . In general, strongly …
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I. Raman scattering and x-ray diffraction study of annealing effects on confined LO and folded LA phonons in GaAs-AlAs superlattices ; II. Picosecond light scattering studies of relaxation and tunneling in GaAs/AlxGa1-xAs mulitple quatum well structures
We have used light scattering techniques to probe the vibrational properties ofGaAs/AlAs superlattices and the dynamics of electrons in GaAs/AlxGal-xAs multiple quantum well structures. In our study of the effects of annealing on a short-period GaAs/ AlAs superlattice we have used Raman scattering …
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Amphiphilic Diblock Copolymers: Study of Interpolyelectrolyte Complexation in Organic Media and Nanoencapsulation of Melatonin
… scanning force microscopy (SFM), dynamic/static light scattering techniques, 1HMR and turbidimetric titrations, for two different systems: (i) homopolyelectrolyte/homopolyelectrolyte and (ii) homopolycation/negatively charged amphiphilic diblock copolymer. For the first system, the possible …
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The Crud Problem in LWRs - Feasibility Study to Characterize Corrosion Products
Made available in DSpace on 2017-07-06T18:48:28Z (GMT). No. of bitstreams: 3 Hilley_James_R_Jr_MS.pdf: 35176099 bytes, checksum: 3f820ac21218f9394d63f15e10645660 (MD5) Hilley_James_R_Jr_MS_ABS.pdf: 473032 bytes, checksum: 5dc7d44222c323a0342bbeb6b73ba82f (MD5) license.txt: 4813 bytes, checksum: …
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Thermoreversible Gelation, Crystallization and Phase Separation Kinetics in Polymer Solutions under High Pressure
… spinodal envelops using time- and angle resolved light scattering techniques. At each concentration, a series of rapid pressure quenches with different penetration depths in a range from 0.1 MPa to 3 MPa were imposed and the time evolution of the angular distribution of the scattered light …
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Comprehensive Study of Semicontinuous Emulsion Polymerisation Processes for Producing Nanoparticles
… weights were measured by dynamic and static light scattering techniques. Turbidity as well as phase transition behaviour of latexes was measured by UV-visible spectroscopy. Glass transition temperature of polymers was measured by differential scanning calorimetry. Morphologies of particles …
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Phase Behavior and Phase Separation Kinetics in Polymer Solutions under High Pressure
… using a high-pressure view-cell and optical techniques over a temperature range of 90-165 oC and pressures up to 55 MPa for PE/n-pentane/CO2 system, and over a temperature range of 25 to 155 oC and pressures up to 70 MPa for PSF/THF/CO2 system. For PE solutions, it has been found that the …