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Signatures of glass formation in a fluidized bed of hard spheres
(Georgia Institute of Technology, 2006-04-14)
We demonstrate that a fluidized bed of hard spheres during defluidization displays properties associated with formation of a glass. The final state is rate dependent, and as this state is approached, the bed exhibits ...
Toward a dynamic climbing robot
(Georgia Institute of Technology, 2006)
Simple mathematical models or ‘templates’ of locomotion have been effective tools in understanding how animals move and have inspired and guided the design of robots that emulate those behaviors. This paper describes a ...
The RiSE Climbing Robot: Body and Leg Design
(Georgia Institute of Technology, 2006)
The RiSE robot is a biologically inspired, six legged climbing robot, designed for general mobility in scansorial (vertical walls, horizontal ledges, ground level) environments. It exhibits ground reaction forces that are ...
Quantum networking with atomic ensembles
(Georgia Institute of Technology, 2006-07-10)
Quantum communication networks enable secure transmission of information between remote sites. However, at present, photon losses in the optical fiber limit communication distances to less than 150 kilometers. The quantum ...
Theory of Light - Atomic Ensemble Interactions: Entanglement, Storage, and Retrieval
(Georgia Institute of Technology, 2006-09-27)
In this thesis, we explore the quantum dynamics of light interactions with optically thick collections of atoms. We provide a theoretical description of several recent experiments in which some key operations necessary ...
Energy Relaxation and Hot-electron Lifetimes in Single Nanocrystals
(Georgia Institute of Technology, 2006-07-11)
Understanding changes in materials properties as a function of size is crucial for both fundamental science development and technological applications. Size restriction results in quantum confinement effects that modify ...
Spin-transfer Torque in Magnetic Nanostructures
(Georgia Institute of Technology, 2006-05-30)
This thesis consists of three distinct components: (1) a test of Slocnzewski's theory of spin-transfer torque using the Boltzmann equation, (2) a comparison of macrospin models of spin-transfer dynamics in spin valves with ...
Triplet Superfluidity in Quasi-one-dimensional Conductors and Ultra-cold Fermi Gases
(Georgia Institute of Technology, 2006-09-13)
This thesis presents theoretical investigations of triplet superfluidity (triplet superconductivity) in quasi-one-dimensional organic conductors and ultra-cold Fermi gases. Triplet superfluidity is different from its s-wave ...
The Creation of a Viable Porous Silicon Gas Sensor
(Georgia Institute of Technology, 2006-04-10)
This dissertation describes the fabrication and operation of porous silicon gas sensors. The first chapter describes the motivation behind gas sensor research and provides the reader with background knowledge of gas sensors ...
First-principles Calculations on the Electronic, Vibrational, and Optical Properties of Semiconductor Nanowires
(Georgia Institute of Technology, 2006-08-15)
The first part of my PhD work is about the lattice vibrations in silicon nanowires. First-principles calculations based on the linear response are performed to investigate the quantum confinement effect in lattice vibrations ...