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 13 of 13 for “"plasma devices"”.
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Dissociation of carbon dioxide in atmospheric pressure microchannel plasma devices
Plasma discharge of carbon dioxide at atmospheric pressure was successfully demonstrated in microchannel plasma devices at breakdown voltages lower than 1 kVRMS. Optical emissions of molecular and ionic fragments of carbon dioxide were observed in emission spectra of visible wavelength range …
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Comparisons of computational methods to represent electron transport in nonequilibrium plasma devices
… (BLT), are inherently multidimensional transient devices. The method employed to model electron transport in such devices is therefore problematic. A versatile model for these switches with which to compare different modeling approaches has been developed. In the two-dimensional, time dependent …
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Silicon microcavity and microchannel plasma devices: spectroscopy and time-resolved optical experiments
Novel microcavity and microchannel plasma devices in Si have provided new and efficient sources of visible, ultraviolet (UV) and vacuum ultraviolet (VUV) radiation. The realization of this new platform for devices is implemented through VLSI and MEMS fabrication techniques. In this thesis, the …
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Coupled phenomena in arrays of microplasma devices and microchannel plasma devices as antennas
Arrays of microcavity and microchannel plasmas with characteristic dimensions of 25-800 micrometer have been generated in glass substrates. To reproducibly fabricate the arrays, glass micromaching using replica molding and micropowder blasting was proposed and demonstrated. The microplasmas were …
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Flexible and transparent microcavity plasma devices: fabricated by polymer-based replica molding technique
The fabrication of flexible and transparent microplasma devices using plastic substrate has explored new avenues in plasma science and technology. A polymer-based replica molding process enables inexpensive and accurate production of microcavities of the devices. Best known as the sources of …
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Design, analysis and validation of electrode-less plasma generator
… work investigates a method for generating plasmas without damaging electrodes. The primary objective is the creation of an electrode-less potential region (virtual cathode) through the use of electron emission and active feed of radio frequency (RF) signal. The reason for pursuing this was …
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Photodetection in Silicon Pyramidal Microdischarges
… device has been observed. This hybrid plasma/semiconductor device was fabricated from standard silicon wafers using common integrated circuit, microfabrication techniques. The response of the devices to a 780-nm laser diode was shown to have an absolute photosensitivity of greater than …
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Investigation of Alfvén eigenmodes in Alcator C-Mod using active MHD spectroscopy
… Alfvén continuum of toroidal magnetic fusion devices may be important for the confinement of energetic particles, particularly fusion-born alpha particles in burning plasma experiments. Interaction between these energetic particles and weakly damped toroidal Alfvén eigenmodes (TAE's) may …
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Experimental Studies of Neutral Particle Effects on Edge Transport Barriers in Tokamaks Using the Lyman-alpha Measurement Apparatus
… profile due to small spatial scales, complex plasma transport, and non-negligible effects of neutral particles. To better quantify the hydrogenic neutral particle source, a one-dimensional, absolutely calibrated pinhole camera system was installed on the DIII-D tokamak to measure edge …
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Synthesis Technique of Thickness-Customizable Multilayered Frequency Selective Surface for Plasma-Based Electromagnetic Structures
… practical problem, the feasibility of deploying plasma switchable compact spatial filter in harsh electromagnetic radiation environments is investigated. The proposed FSS integrates contained plasma (plasma-shells) as active tuning elements. These ceramic, gas-encapsulating shells are ideal for …
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Plasma-coupled microcombustion
… of macro-scale (>mm) flames has shown that plasma coupling can be an effective method to stabilize and enhance combustion. The applicability of plasma in the particular case of micro-scale flames has yet to be investigated. In this dissertation, a multi-scale approach is used to build models …
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Passivation of III–V Nanowires Using Dielectrics Deposited by Atomic Layer Deposition
… as the aluminium precursor and H₂O or oxygen plasma as the oxygen sources. NWFETs were encapsulated with alumina over a range of deposition temperatures from 85 to 300 °C and a range of layer thicknesses from 3 to 50 nm. The alumina was deposited using both plasma-enhanced and thermal ALD …