Now showing items 41-50 of 53
A Two-Photon E1-M1 Optical Clock.
(2014)
Innovations in precision frequency measurement advance popular technologies such as global positioning systems (GPS), permit the testing of fundamental physics constants, and have the potential to measure local variations ...
Mapping, Tracking and Modeling the Movements of Single Membrane-Bound Transcription Activator Proteins in Live Vibrio cholerae.
(2014)
Cholera has been known since ancient times, yet there is still no cure. Vibrio cholerae bacteria cause cholera by producing cholera toxin. Cholera toxin production is regulated by the protein ToxT, which itself is regulated ...
The Confinement and Coherent Generation of Acoustic Plasmons in Photoexcited GaAs.
(2014)
Three-dimensional multi-component plasmas involving charge species with very different masses are expected to show a new branch of charge-density fluctuations with a frequency dispersion that is linear with respect to the ...
A Tale of Two RNAs: Single Molecule Investigation of the Conformation, Dynamics and Ligand Binding to the PreQ1 and T-box Riboswitches.
(2014)
Riboswitches are structured mRNA domains that can bind cellular metabolites and control gene expression of downstream genes mainly via transcription attenuation or inhibition of translation initiation. Although structures ...
Radiation Generation from Ultra Intense Laser Plasma Interactions with Solid Density Plasmas for Active Interrogation of Nuclear Materials.
(2014)
The development of short pulse high power lasers has led to interest in laser based particle accelerators. Laser produced plasmas have been shown to support quasi-static TeV/m acceleration gradients which are more than ...
Hybrid Organic/Inorganic Optoelectronics.
(2014)
Traditional inorganic semiconductors are the foundation of modern electronics. These materials are widely used in computing and optical devices (such as lasers, LEDs, cameras, etc.), but they are limited in functionality ...
Melt and Glassy Dynamics in Complex Polymer Systems: Miscible Blends and Star-Shaped Polymer Films.
(2014)
Considerable effort has been given towards using polymers as active materials in many types of organic devices such as photovoltaics, active membranes and sensors as well as drug delivery. A number of the applications of ...
Structural Dynamics of the Hepatitis Delta Virus and Hairpin Ribozymes: Implications for Function.
(2014)
Small catalytic RNAs (ribozymes) are a class of RNAs less than 200 nucleotides in length, which are able to catalyze both cleavage and subsequent re-ligation of their own phosphodiester backbones. Cleavage results in ...
Subwavelength Dielectric Grating-based Broadband Reflectors and Narrowband Transmission Filters.
(2014)
This dissertation includes investigations on infrared mirrors and filters for next generation thermal imaging and spectrometer-on-a-chip applications operating in the long-wavelength infrared (LWIR, 8-15 microns) spectral ...
Experimental Hydrodynamic Instability at High Energy Density.
(2014)
This dissertation presents a series of experiments on various aspects of shock-driven hydrodynamic instability at high energy density (HED). This is an aspect of physics with ramifications in many important applications, ...