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 24 for “"Microwave cavity"”.
-
Characterization of Microwave Cavity Discharges in a Supersonic Flow
… the real combustion environment, a cylindrical microwave cavity was used to study the effects of hydrogen and air admixtures to plasma parameters in an argon supersonic flowing discharge. Argon and hydrogen were chosen since their atomic and molecular structure are well documented in the …
-
Uniform heating of thin ceramic slabs in a multimode microwave cavity
… source term, are good models for describing microwave heating of thin ceramic slabs and cylinders in a multi mode, highly resonant cavity. A thin ceramic slab situated in a TEN03 rectangular cavity modeled in the small Biot number limit and a thin silicon wafer situated in a TM101 cylindrical …
-
Measurement of Proton Transfer Reaction Rates in a Microwave Cavity Discharge Flowing Afterglow
… were obtained using the newly developed microwave cavity discharge flowing afterglow (MCD-FA) apparatus. This device uses an Asmussen-type microwave cavity discharge ion source that is spatially separated from the flow tube, eliminating many of the problems inherent with the original FA …
-
Changes of signal level detection in a resonant microwave cavity with varying concentrations of glucose
… blood) and the signal level within a resonant microwave cavity, which is the key to the development of a non-invasive blood glucose monitoring system. This thesis outlines the mechanical design, electronic and software design, involved in the development of such a system. In this project, the …
-
Investigation of microwave cavity applicators for plasma assisted CVD diamond synthesis and plasma assisted combustion
Thesis (Ph. D.)--Michigan State University. Electrical Engineering, 2010
-
The resonant-frequency shift of a microwave cavity caused by the high-density plasma in semiconductors, as a function of magnetic field
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Physics, 1959
-
Shining light through walls : a search for dark photons
… the construction and results of the CASCADE microwave cavity light shining through a wall experiment will be presented. In addition to CASCADE, this thesis will present a novel realisation of a light shining through a wall experiment using photonic bandgap structures to probe otherwise …
-
Experimental investigation of the interaction between the electron gas and the excited atoms in a plasma by means of a xenon laser
… a gas discharge situated in a high gain optical cavity. Of particular interest is the effect of lasering upon this interacti.on. Spatially resolved electron density and electron temperature measurements are presented for a DC excited 3.51 P. (5d 33 -76P22) xenon laser operating in a capillary …
-
Development of microreactor setups for microwave organic synthesis
… of this work is the understanding of microwave heating and the microreactor design challenges involved through both chemical experiments and computational models. The original goal of this research is to develop a microreactor system in order to carry the microwave organic synthesis in …
-
Solid-state cavity quantum electrodynamics with spin ensembles
… by coupling a solid-state emitter ensemble to a microwave cavity, forming a cavity quantum electrodynamics system. Our approach eliminates the need for photon collection required by conventional optical readout methods, and the resulting strongly coupled system allows efficient cavity-based …
-
Evaluation and design of polymer systems for enhanced microwave heating
Microwave heating of different polymer systems (epoxy-amine. polypropylene-iron, carbon-black-filled perfiuoroelastomer) was evaluated using dielectric testing and monitored processing in a multimode microwave cavity. Dielectric measurements were made using a field perturbation technique and a …
-
A Coupled Heat Transfer and Electromagnetic Model for Simulating Microwave Heating of Thin Dielectric Materials in a Resonant Cavity
Microwave heating is an emerging but still underutilized tool in modern industrial applications. The task of designing microwave applicators for heating industrial materials with temperature-dependent properties is challenging, and trial-and-error system prototyping is an expensive and wasteful …
-
Simulation of Microwave Heating of Mullite Rods
Microwave processing has been studied as an alternate heating technique over conventional heating for industrial applications. Some advantages include quicker and more uniform heating. Also, microwave energy offers the advantage of localized heating and smaller-sized equipment. Many ceramics, …
-
An X- and Q-band electron paramagnetic resonance study of Mn2+ in a single crystal of NH4Cl0.9I0.1 in the temperature range 77-295 K
… here were carried out at X-band and Q-band microwave frequencies, and at various microwave cavity temperatures. The resonance spectrum of this crystal is described by a set of spin-Hamiltonian parameters, whose parameters are determined by fitting the various resonance line positions …
-
Role of electric field profiles in continuous microwave processing of thermal runaway materials
Microwave processing presents a relatively new heating source for a large variety of processes and materials. Depositing microwave energy volumetrically, microwave heating appears as a good alternative for sintering ceramics by decreasing the process time, offering better energy efficiency, but …
-
Extensible Platforms for Bosonic Quantum Error Correction
… using the high-Q mode of a macroscopic 3D microwave cavity controlled via fixedfrequency transmon qubits [1, 2, 3, 4, 5, 6]. To date, all previous demonstrations have been limited by bit-flips in the transmon control qubit (with typical T1 lifetimes on the order of 100 microseconds), …
-
Numerical Simulation of Microwave Sintering of Zinc Oxide
… surface of a zinc oxide sample, when heated in a microwave cavity without the presence of oxygen. This effect is believed to be caused by the irregular temperature dependence of the dielectric properties of zinc oxide, particularly dielectric loss. Two thermocouple probes were used to measure the …
-
A model to evaluate the coupling characteristics from a coaxial line into a cylindrical waveguide
… the coupling characteristics for a resonant microwave cavity sensor, such as that for the Flexured Mass Accelerometer, is limited to finite-element analysis, which takes approximately five to six days for one coupler configuration. The solution presented in this paper is based on segmenting …
-
Cryogenic surface electrode ion traps with integrated superconducting microwave resonators for polar molecular ion spectroscopy
… polar molecular ions' rotational states to the microwave radiation. The new approach presented here is based on co-trapping Sr+ atomic ions together with SrCl+ molecular ions in a cryogenic surface electrode RF ion trap and on using the coupling of the molecular ion's rotational states to an …
-
Vector magnetometry using cavity-enhanced microwave readout of solid-state spin sensors
… research avenue is to engineer state-of-the-art microwave delivery systems which improve the coherent control of large spin ensembles as they are manipulated for readout. Another is to develop novel readout techniques that go beyond measuring optical fluorescence signals, which are often …
Page 1 of 2