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The interaction of electromagnetic radiation with carbon nanotube fibresJames, Matthew Philip William January 2014 (has links)
No description available.
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A study of the optical transmission properties of the polymer HPG /Wilkinson, Sonja Renae, January 2000 (has links)
Thesis (Ph. D.)--University of Oklahoma, 2000. / Includes bibliographical references (leaves 153-155).
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Polarization transfer of electromagnetic waves in inhomogeneous magnetized plasma.Cheng, Fai-tsun. January 1976 (has links)
Thesis--Ph. D., University of Hong Kong, 1977.
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Experimental studies of a helicon plasmaLee, Charles Anton 11 September 2012 (has links)
The goal of this dissertation is to provide experimental insight into the mechanism behind the efficient power absorption of helicon plasmas. This work presents evidence which is consistent with the Radially Localized Helicon (RLH) theory put forth by Breizman and Arefiev. Helicon discharges produce peaked density profiles with radial density gradients creating a potential well that sets up the RLH waves, which we believe is the major power absorption mechanism in the plasma. The experimental data presented in this dissertation must be taken in totality along with parallel efforts in theory and computer simulation. We show photographic evidence along with Langmuir probe measurements of the axial density that shows an asymmetric, right-hand circularly polarized wave being launched in a direction consistent with RLH theory. Additionally, we are able to show, through Langmuir probe measurements, that significant radial density gradients exist in the plasma which is required by the RLH dispersion but contrary to the uniform density assumption of current theory. Furthermore, using the two-dimensional density profile obtained from experiment, we are able to use that data as input into a model which confirms key features of the power absorption in terms of location and magnitude. The time-varying magnetic field is measured and analyzed against the RLH dispersion relation. Using a Fourier decomposition technique, the analysis indicates the proper scaling of the wavenumbers with the RLH dispersion. Finally, using the experimental density as input to a computer model, simulations show very good agreement with the amplitude and phase of the experimentally measured RF magnetic fields. / text
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Surface integral equation method for analyzing electromagnetic scattering in layered mediumChen, Yongpin., 陈涌频. January 2011 (has links)
Surface integral equation (SIE) method with the kernel of layered medium Green's
function (LMGF) is investigated in details from several fundamental aspects. A
novel implementation of discrete complex image method (DCIM) is developed to
accelerate the evaluation of Sommerfeld integrals and especially improve the far
field accuracy of the conventional one. To achieve a broadband simulation of thin
layered structure such as microstrip antennas, the mixed-form thin-stratified
medium fast-multipole algorithm (MF-TSM-FMA) is developed by applying
contour deformation and combining the multipole expansion and plane wave
expansion into a single multilevel tree. The low frequency breakdown of the
integral operator is further studied and remedied by using the loop-tree
decomposition and the augmented electric field integral equation (A-EFIE), both
in the context of layered medium integration kernel. All these methods are based
on the EFIE for the perfect electric conductor (PEC) and hence can be applied in
antenna and circuit applications. To model general dielectric or magnetic objects,
the layered medium Green's function based on pilot vector potential approach is
generalized for both electric and magnetic current sources. The matrix
representation is further derived and the corresponding general SIE is setup.
Finally, this SIE is accelerated with the DCIM and applied in quantum optics,
such as the calculation of spontaneous emission enhancement of a quantum
emitter embedded in a layered structure and in the presence of nano scatterers. / published_or_final_version / Electrical and Electronic Engineering / Doctoral / Doctor of Philosophy
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Analysis of a simulated source of electromagnetic pulsesSchulz, Usto Francis Eugene January 1980 (has links)
No description available.
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SLOTS IN A PARALLEL PLATE WAVEGUIDEQuintenz, Jeffrey Paul, 1949- January 1975 (has links)
No description available.
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Electromagnetic penetration through a grating of infinite cylindersQuintenz, Jeffrey Paul, 1949- January 1972 (has links)
No description available.
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Underground UHF-EM transillumination : a feasibility studyLa Fleche, Paul Thomas. January 1985 (has links)
A feasibility study into the use of UHF-EM transillumination measurements in geophysics is presented. The electrical properties and absorption rates of common crustal materials are examined with the goal of identifying specific conditions under which sufficient material penetration at UHF frequencies is available. / A prototype 445 MHz continuous-wave transillumination instrument designed for underground use is described. Test surveys, with this instrument, were conducted at the Big Nickel Mine in Sudbury, Ontario, to obtain a number of through-rock absorption rates. Estimated effective resistivities of between 500 and 1500 ohm-metres are determined from the survey data. / Effective conductivities and permittivities from AC and DC electrical property measurements on geological samples from the mine site corroborate these transillumination survey results. / The results of the field surveys indicate that the UHF-EM transillumination technique is a feasible and useful geophysical method.
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Electromagnetic scattering from three-dimensional penetrable structures computed with combined-field integral equations on dual interlocking meshesSmith, Mark H. 08 1900 (has links)
No description available.
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