Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 1296 for “"Trapping"”.
-
Trapping sodium with light
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1988.
-
Hybrid optical and acoustic trapping
… its incredible precision and dexterity. Optical trapping is, however, limited in several ways. It often struggles with particles larger than 10 micrometers, agglomerates and large numbers of particles.<br/><br/>Complimentary technologies such as acoustic trapping, aim to overcome some<br/>of …
-
Trapping cold rubidium in a fiber
In this thesis, we demonstrate the novel technique of loading cold ⁸⁷Rb into a red-detuned optical dipole trap within a hollow core photonic fiber. This confines the atoms to 6 microns in two dimensions. We initially cooled the Rubidium in a magneto-optical trap. The great confinement of the …
-
Trapping and cooling atoms at high densities
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
-
Hydrogen diffusion and trapping in electrodeposited nickel
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1989.
-
Trapping, laser cooling, and spectroscopy of Thorium IV
… trapped, laser cooled ²²⁹Th³⁺ ion. Creation, trapping, laser cooling, and precision spectroscopy are developed and refined first with the naturally occurring isotope, ²³²Th. These technologies are then extended to laser cooling and precision laser spectroscopy of the electronic structure of …
-
Near-field scanning optical microscopy with laser trapping
This thesis is concerned with a comprehensive understanding of particle-trapped near-field scanning optical microscopy. This technique is unique in that it relies on the collection of scattered evanescent waves from a sample with a laser-trapped particle. In comparison with the other forms of …
-
Trapping Platinum on Ceria: Role of Surface Facets
Supported platinum catalysts are used in the automotive industry for the oxidation of CO, hydrocarbons, and NOx. Dispersed Pt provides active sites for these reactions to occur. During the use of these catalyst, high temperatures will cause Pt to become volatile and sinter, forming large particles …
-
Angular trapping of a mirror using radiation pressure
<p>Alignment control in gravitational-wave detectors has consistently proven to be a</p> <p>dicult problem due to the stringent noise contamination requirement for the gravitational</p> <p>wave readout and the radiation-pressure induced angular instability in Fabry-</p> <p>Perot cavities …
-
Photonic Crystals For Optofluidic Transport, Trapping And Biosensing
… devices for performing optofluidic transport, trapping and biosensing. While optical biosensors are of great interest to the biosensing community, one of the limitations of current optical nanobiosensors is their inability to perform a large number of detections in parallel. I have demonstrated …
-
Electronic Trapping Properties of Gold Center in Silicon
… silicon? To have better insight, we studied the trapping rates of the gold center in both low and medium concentration substrates.
-
Novel trapping techniques for shaping Bose-Einstein condensates
… efficiency, with lifetimes of up to 30 s, and trapping frequencies of up to 250 Hz were measured. A hard disk platter with a specially written magnetic pattern was used to generate magnetic fields to confine atoms tightly. Detrimental interactions with the surface were avoided by using an …
-
Migration and trapping of CO₂ in saline aquifers
… understanding of the subsurface migration and trapping of the buoyant C0 2; however, many aspects of the fundamental physics of CO 2 migration and trapping are not fully understood, and traditional reservoir-simulation tools are currently unable to resolve the impact of small-scale trapping …
-
Investigation of Liquid Trapping Following Supercritical Fluid Extraction
… lead to analyte loss. This work focussed on the trapping process with the restrictor immersed in a liquid after SFE. Experiments compared the effects of trapping parameters on the collection efficiencies of fat-soluble vitamins of similar polarities and structures. The most important variable was …
-
Insulator-based Dielectrophoresis for Bacterial Characterization and Trapping
… insulating features with the goal of improving trapping efficiency of biological species at low applied signals and fostering wide frequency range operation of the microfluidic device. The dielectric properties of bacteria as well as submicron polystyrene beads are discussed and the impact of …
-
Simultaneous cooling and trapping of 6Li and 85/87Rb
… Gases Laboratory for laser cooling and trapping of 85/87Rband 6Li as well as of experiments that have been pursued in our lab to date. The first chapter provides an overview of the experimental focus of the QDG lab. The second and third chapters provide the fundamental theory behind …
-
Nanoimprint lithography for light trapping applications in solar cells
… process is adopted to fabricate efficient light trapping structures for thin-film solar cells. The SCIL process can achieve economical and large area patterns with high fidelity sub-micron resolution over non-planar surfaces without involving intense curing processes. We study and compare both …
Page 1 of 65