# Browse Dissertations and Theses - Physics by Title

• (1988)
This thesis describes work on the thermodynamics and transport properties of photoexcited carriers in bulk and two-dimensional semiconductors. Two major topics are addressed: I. Excitonic Phase Diagram in Si: Evidence for ...

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• (1990)
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 ...

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• (1990)
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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• (1984)
The work described ir. this thesis involves the study of optical ar.d thermal propterties of semicor.ductors and consists of three seperate topics. 1. Resonant two-photon absorption by exciton polaritons in CuCl ~. A ...

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• (1985)
A model of far infrared (FIR) dielectric response of shallow impurity states in a semiconductor has been developed and is presented for the specific case of the shallow donor transitions in high purity epitaxial GaAs. The ...

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• (2014-05-30)
Bacterial swimming and chemotaxis serves as a model system for understanding information processing in living organisms. My thesis project was focused on studying the swimming behavior of Escherchia coli bacterial cells. ...

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• (1994)
The determination of the optical properties of turbid biological media is of primary importance in several areas of medicine and biotechnology. In particular, the quantitative determination and spatial localization of the ...

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• (2013-02-03)
Frustration in A-site spinels due to the competition between complex structure and strong interactions has been the focus of many theoretical and experimental studies recently. Mn3O4 is one such material with a three way ...

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• (1998)
A new technique has been developed for studying surface acoustic wave propagation. The technique, which uses non-contact immersion transducers to excite and detect ultrasound with frequencies between 1 and 20 MHz, allows ...

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• (2012-05-22)
This thesis presents the direct observations of magnetic flux vortices in superconducting weakly coupled arrays. Real space images of vortices were obtained for various values of f, the fractional flux per unit cell in ...

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• (1986)
Theoretical models of off-center isovalent substitutional impurities in alkali halides are examined. Calculations have been performed on r,j+ in KCI, a representative system known experimentally to exhibit off-center ...

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• (2001)
In 1970 Callan, Coleman, and Jackiw found that it is always possible to improve the symmetric stress-energy tensor of a renormalizable relativistic field theory over (3+1)-dimensional flat space-time manifold. The improved ...

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• (1971)
Raman scattering has been observed in KBR and KI single crystals doped with hydrogen and deuterium U centers, and NaCl containing silver and copper impurities. An argon ion laser, tandem double monochromator, and photoelectric ...

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• (1985)
Experimental investigations, us i n9 x-ray diffraction techniques, have been made into the phenomenon of staging in graphite intercalation compounds. These studies have been performed in situ by means of a two-zone, ...

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• (1999)
Due to their multiple scattering, near infrared photons diffuse in human tissues providing interesting physiological information over relatively large volumes. By employing frequency-domain techniques along with a diffusion ...

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• (2002)

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• (1975)
Inclusive pion production at large and small transverse momentum PT has been studied in a model of hadrons. The model has the Feynman diagram structure of the multiperipheral model. The off-shell hadron amplitudes are ...

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• (1967)
Radiation of 9375 MHz is incident on a cylindrical neon discharge enclosed in a 1" square waveguide and incoherent scattering in the upper sideband is investigated. Scattering is observed in the backward and forward ...

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• (1973)

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• (1994)
High-resolution inelastic electron scattering has been performed on 14°Ce. A search for high-spin, stretched-configuration transitions lead to the identification of a J1r = 12- state at 6.31 MeV. This transition has only ...

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