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.
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Showing 1 to 12 of 12 for “"green laser"”.
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Surface Relief Grating on Thin Film Containing Azobenzene-Polymer Material Linked by Hydrogen-Bonding
… behavior under irradiation with two interfering laser beams. That leads to generate surface inscription pattering known as Surface Relief Grating (SRG). Moreover, two different types of polymers were used in this research, and we used them with new series of azobenzene compounds. In fact, the …
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Development of a to-scale fluid mixing visualization process for analysis of cold-flow mixing
… as well as an imaging system using a retrofitted green laser. The final model is a tested and proven system for flow imaging of two cold flows within a to-scale fuel-mixer.
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Correlative elemental and electrical micro-analysis of laser fired contacts in silicon solar cells
… parity with conventional energy, advances like laser-fired contacts must be adopted to improve cost levers like solar cell efficiency and industrial throughput. This work examines the relationship between laser-processing on the structure and property of solar cells, with the goal of (1) …
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Characterisation of solution processed zinc oxide quasi-superlattice materials for thin film applications
… processed thin films were investigated via green laser illumination at various power densities during I-V measurements. Repeatable and consistent photovoltaic behavior is exhibited of Al-ZnO thin films from sub-band illumination at 532 nm, leading to unusually high photocurrents of > 3 mA. …
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Glial Changes and Role of Connexin43 in a Laser-induced Rodent Model of Retrobulbar Optic europathy
… portion of the optic nerve exposed. Argon green laser (514nm) with 50mW power was shone for 30 sec on the retrobulbar portion of the optic nerve immediately posterior to the globe. Animals were left alive for variable number of days post induction of neuropathy. Haematoxylin and eosin as …
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Fabrication of InGaP LEDs on a graded buffer substrate
… emitting diodes (LEDs), each producing red, green, or blue light. The light from these three LEDs is chosen so that the display can generate the largest color combination possible. Tri-color LED displays typically use one of two combinations of LEDs. In the first, InGaN blue (480 nm), AlGaAs …
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Nearshore Bathymetry from Fusion of ICESat-2 and Multispectral Satellite Imagery
… platform was launched into orbit and the 532 nm (green) laser has been shown to produce bathymetric profiles in shallow, optically clear waters, which allows for a direct measurement of bathymetry from space. Unfortunately, the spacing of the laser beams is too sparse to be considered for high …
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Turbulent interactions with normal shocks and their effects on aluminum particle burn time
… research. High speed cameras and a 532 nm green laser were used to obtain both the burn time data and PIV turbulence images. Burn time results showed a 10-25% reduction in burn times for the turbulent case compared to the laminar case. The amount of reduction seems to decrease by increasing …
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Diodengepumpte Laserverstärker mit flachen Lasermedien
Pulsed Laser-Oscillators are limited to a maximum output power depending on their regime of puls duration and repetition rate. The use of amplifiers enable higher power levels. The present theses reports on the development of laser amplifiers with a flat laser media and a special hybrid resonator, …
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Zinc oxide nanophotonics : toward quantum photonic technologies
… for short wavelength photonic devices such as laser diodes. A large exciton binding energy (60 meV) at room temperature in addition to the advantages of being able to grow various nanostructure forms have made ZnO suitable for a wide range of applications in optoelectronic devices. Driven by …
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Metals for Additive Manufacturing
L'abstract è presente nell'allegato / the abstract is in the attachment
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Design of bio-inspired texturing treatments, via high power ultra-short pulse lasers, of ferritic stainless steel surfaces that inhibit the formation of bacterial biofouling on tools for hospital use and in the food industry
… techniques available for creating such surfaces, laser technology has emerged as particularly promising due to its numerous advantages, such as ease of scaling, environmental sustainability (as it produces no waste), and high reproducibility. For these reasons, this doctoral thesis has employed …