Now showing items 1-10 of 21
Particle Focusing in Microchannels
The ability to control the motion of particles and cells in microchannels has been a center of fascination since the advent of microfluidics. Entire fields have been created in order to accomplish separation, volume reduction ...
Directional Optical Antennas, Wafer-Scale Metasurfaces, and Single Molecule Surface-Enhanced Raman Scattering
Within the field of optics, one of the topics being currently investigated with considerable interest is that of plasmonics, which refers to the use of surface plasmons on metallic nanostructures to manipulate light. It ...
Three-dimensional nanofabrication of silver structures in polymer with direct laser writing
This dissertation describes methodology that significantly improves the state of femtosecond laser writing of metals. The developments address two major shortcomings: poor material quality, and limited 3D patterning ...
Design of Mixing Pulses for NMR Spectroscopy by Repeated Rotating Frames
In protein NMR spectroscopy, homonuclear mixing pulses are used to reveal correlations amongst chemically bonded nuclear spins.
Diffusion, Deformation, and Damage in Lithium-Ion Batteries and Microelectronics
This thesis explores mechanical behavior of microelectronic devices and lithium-ion batteries. We first examine electromigration-induced void formation in solder bumps by constructing a theory that couples electromigration ...
Femtosecond laser direct writing of 3D metallic structures and 2D graphite
This thesis explores a novel methodology to fabricate three dimensional (3D) metal-dielectric structures, and two dimensional (2D) graphite layers for emerging metamaterials and graphene applications. The investigations ...
Femtosecond-laser hyperdoping and texturing of silicon for photovoltaic applications
This dissertation explores strategies for improving photolvoltaic efficiency and reducing cost using femtosecond-laser processing methods including surface texturing and hyperdoping. Our investigations focus on two aspects: ...
Mechanics of Electrodes in Lithium-Ion Batteries
This thesis investigates the mechanical behavior of electrodes in Li-ion batteries. Each electrode in a Li-ion battery consists of host atoms and guest atoms (Li atoms). The host atoms form a framework, into which Li atoms ...
Mechanisms and Implications of Fracture in Cardiovascular Stents
Cardiovascular stents are one of the most widely implanted medical devices, with over 1 million implanted each year in the United States alone. While stent failure modes of restenosis and thrombosis have been widely examined, ...
Plasmonics for surface-enhanced Raman scattering: from classical to quantum
Metallic nanostructures that employ localized surface plasmon resonances to capture or radiate electromagnetic waves at optical frequencies are termed "plasmonic optical antennas". These structures enhance light-matter ...