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Dissertations / Theses on the topic 'Electromagnetism – materials'

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1

O'Dell, Ryan Andrew. "Resonant Ferromagnetic Absorption and Magnetic Characterization of Spintronic Materials." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1533043360679487.

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2

Myers, Joshua Allen. "Nano-scale RF/Microwave Characterization of Materials' Electromagnetic Properties." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1340883872.

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3

Ciracì, Cristian. "Study of second-harmonic generation in nonlinear nanostructured materials." Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20053.

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Au cours de ces 20 dernières années, une attention particulièrement soutenue a été donnée à l'étude et à la fabrication de matériaux nano-structurés permettant le contrôle de la lumière. Cependant, les propriétés de non-linéarité optique de ces nouveaux matériaux n'ont que très peu été explorées. Partant de ce constat, cette thèse se propose de pourvoir cette insuffisance. L'accent est mis en particulier sur le processus de génération de seconde harmonique à travers deux aspects fondamentaux: (i) le contrôle de l'émission de seconde harmonique pour des matériaux nano-structurés non-linéaires e
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4

Meyendorf, Robert. "Nondestructive Determination of Case Depth in Surface Hardened Steels by Combination of Electromagnetic Test Methods." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1303834395.

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5

Parsa, Nitin. "MILLIMETER-WAVE FARADAY ROTATION FROM FERROMAGNETIC NANOWIRES AND MAGNETOELASTIC MATERIALS." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1561468969375731.

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6

Vishal, Kumar. "Nonreciprocal magnetostatic surface wave in thin ferromagnetic film." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472018768.

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7

Kung, Christopher W. "Development of a time domain hybrid finite difference/finite element method for solutions to Maxwell's equations in anisotropic media." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1238024768.

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8

Roberts, Anthony M. "Implementing a Piezoelectric Transformer for a Ferroelectric Phase Shifter Circuit." Cleveland State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=csu1337025849.

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9

Chung, Jae-Young. "Broadband Characterization Techniques for RF Materials and Engineered Composites." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269542888.

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10

Hansen, Matthew Martin Kenneth. "Optimization of Conformal Joints in Axial Tension." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1355847865.

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11

Samuel, Paulo. "Investigating how Grade 10 Physical Science teachers help learners to make sense of concepts of electromagnetism using easily accessible materials in under-resourced schools." Thesis, Rhodes University, 2017. http://hdl.handle.net/10962/8143.

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This study sought to explore teachers’ perceptions and experiences of using easily accessible materials and how they might collaboratively develop learning and teaching support materials using easily accessible materials. The study explored three aspects. Firstly, the views, experiences and factors which influence grade 10 Physical Science teachers’ perceptions and experiences of teaching the topic of electromagnetism. Secondly, to find out what teachers can do to improve teaching and learning of electromagnetism in grade 10 Physical Science using easily accessible materials. Thirdly, to look
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12

Mougin, Alexandra. "Anisotropie magnétique, structure en domaines et renversement d'aimantation : déformations, couplages, champ magnétique et courant électrique comme leviers d'action." Habilitation à diriger des recherches, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00638870.

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Mes activités de recherche sont principalement axées sur le magnétisme de systèmes de basse dimensionnalité. J'ai travaillé particulièrement à préciser des interdépendances entre ordre structural, géométrie et magnétisme dans des nanosystèmes, souvent pour l'électronique de spin. Ce domaine de recherches, poussé par les applications potentielles en matière de mémoires et capteurs, est extrêmement actif et concurrentiel. Je me suis focalisée sur les relations entre les leviers d'action que sont les déformations épitaxiales, les champs magnétique ou électrique mais aussi un courant polarisé et l
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13

Uckert, Kyle. "High Temperature Resistivity and Hall Effect Measurements of Conductive and Semiconductive Thin Films." Ohio University Honors Tutorial College / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1276713762.

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14

Apaydin, Nil. "Novel Implementations of Coupled Microstrip Lines on Magnetic Substrates." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1373897365.

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15

Vabbilisetty, Pratima. "Fabrication and Characterization of Substrate Materials for Trace Analytical Measurements by Surface Enhanced Raman Scattering (SERS) Spectroscopy Technique." Connect to resource online, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1231794465.

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16

Ahmadi, Farzad. "Magnetic Micro- and Nanostructures for Electrical Machinery." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1544521347564228.

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17

Bresson, Paul. "Étude des phénomènes thermiques ultrarapides dans les nanostructures plasmoniques." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST005.

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La thermoplasmonique est une branche de la plasmonique exploitant les phénomènes thermiques dans des structures métalliques. Longtemps regardées comme problématique, les pertes par effet Joule dues à l’absorption de la lumière par des nanoparticules métalliques sont maintenant considérées comme un point de départ pour de nombreuses applications : nanosources thermiques en médecine, enregistrement magnétique, catalyse chimique, thermotronique ou la conversion d’énergie.L’usage de laser femtosecondes sur des structures plasmoniques, permet de créer des nanosources thermiques confinées spatialeme
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18

Nick, Zachary H. "Foundations for Smart Metamaterials by Liquid Metal Digital Logic and Magnetoelastic Properties Control." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587669303938667.

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19

Loreto, Renan Pires. "Proposta para realização de correntes magnéticas em gelos de spin artificiais." Universidade Federal de Viçosa, 2014. http://locus.ufv.br/handle/123456789/4272.

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Made available in DSpace on 2015-03-26T13:35:23Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1490865 bytes, checksum: c014553d8c6a9395d9d2f138ae2b16f8 (MD5) Previous issue date: 2014-07-22<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Spin ice is a substance that does not have a single minimal­energy state. Even at very lower temperatures, these compounds shows a residual entropy as well as the water ice. The magnetic ordering of a spin ice resembles the position of hydrogen atoms in water ice, arranged in a tetrahedron and obeying the the ice rule. The most prominent
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20

Murdock, Richard Craig. "RADIO FREQUENCY CONTROLLED STIMULATION OF INTRACELLULAR GOLD OR SILVER NANOPARTICLE CONJUGATES FOR USE AS POTENTIAL SENSORS OR MODULATORS OF BIOLOGICAL FUNCTION." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1277753458.

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21

Kamanalu, Sunil S. "Proximity and Thickness Estimation of Aluminum 3003 Alloy Metal Sheets Using Multi-Frequency Eddy Current Sensor." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1284513369.

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22

Amonson, Michael D. "Multiple Charge Carrier Species and Their Effects in Photorefractive Two-Beam Coupling in Potassium Niobate." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1512494096366019.

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23

Yang, Yuan. "Influence of Chemical Doping on Microstructures and Superconducting Properties of MgB2 Wires and Bulk Samples." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1469187563.

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24

Lalley, Nicholas M. "Composite Electromagnetic Applications and Devices." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504878841254054.

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25

Raulet, Marie-Ange. "Contribution à la modélisation des matériaux magnétiques liés à leur environnement en génie électrique." Habilitation à diriger des recherches, Université Claude Bernard - Lyon I, 2011. http://tel.archives-ouvertes.fr/tel-00703561.

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Les travaux de recherche présentés dans ce mémoire concernent la modélisation de lois statiques et dynamiques de matériaux dédiés à des applications de l'électrotechnique. Le titre de ce mémoire est volontairement plus général afin de montrer que ces travaux de recherche ne demandent qu'à être élargis. Les études traitées à ce jour portent sur la modélisation du comportement de matériaux magnétiques utilisés pour des dispositifs de l'électrotechnique. Une voie à venir sera de s'intéresser aux matériaux innovants et nouveaux dédiés aux applications de l'électronique de puissance et de prendre e
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26

Ning, Ding. "Analytical and Numerical Models of Multilayered Photonic Devices." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1207712683.

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27

Silva, Leonardo de Sousa. "Efeitos de diluição química no composto intermetálico GdIn3." Pós-Graduação em Física, 2013. https://ri.ufs.br/handle/riufs/5294.

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This work proposes the development of a technique to growth of single crystals through metallic flux technique at the Sergipe State. Besides, the system YxGd1-xIn3 (0 x 0.5 to pass of 0.10 % ) has been obtained via this technique and its structural and magnetic properties are studied. X-ray diffraction results have been performed in order to verify if the desired crystalline phase was obtained. The experimental results show that it has been grown with success. The magnetic characterization is carried out through magnetic susceptibility data as function of temperature (2 x 300 K) and magnet
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28

Venkatasubramanian, Rajiv. "Composite Nanoparticle Materials for Electromagnetics." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352993374.

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29

Törnqvist, Julia. "Electromagnetic Homogenization-simulations of Materials." Thesis, Uppsala universitet, Elektricitetslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395866.

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This thesis aims to determine the distribution of the relative permittivity for random mixtures of material using electromagnetic simulations. The algorithm used in the simulations is the FDTD method which solves Maxwell's equations numerically in the time-domain. The material is modeled as randomly shaped particles with radius 12 ± 10 micrometre in x- and y-direction and radius 3 ± 1 micrometre in zdirection. The scattering parameters from the transmitted and reflected electric field when a plane wave interacts with the material are measured. The relative permittivity is determined from the s
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30

Chailloux, Thibaut. "Caractérisation et modélisation de matériaux magnétiques en hautes températures en vue d'une application au filtrage CEM." Phd thesis, Université Claude Bernard - Lyon I, 2011. http://tel.archives-ouvertes.fr/tel-00703562.

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Un enjeu majeur de l'industrie aéronautique de demain est de concevoir et développer un avion " plus " électrique. En effet, sur un avion de ligne, les principaux systèmes utilisent des types d'énergies différents tels que l'énergie hydraulique ou pneumatique. La tendance actuelle est à la conversion de ces systèmes à l'énergie électrique car elle présente de nombreux avantages et permettrait des économies de masse, d'énergie, et de coûts de maintenance. Avec l'augmentation croissante des systèmes électriques dans l'avion se posent par conséquent des problèmes d'interférences et de compatibili
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31

Sonde, Abayomi Emmanuel. "Etude et modélisation de procédés innovants de mise en compression de surfaces : Traitements de surface par cavitation et par impulsions électromagnétiques." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI015/document.

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Les procédés de traitement de surface tels que le grenaillage sont utilisés pour introduire des contraintes résiduelles de compression dans les matériaux métalliques. Cela permet de prévenir l'initiation et la propagation des fissures afin d'augmenter la durée de vie en fatigue des pièces mécaniques. Les limites et inconvénients des procédés actuels généralement utilisés pour cette fin sont connus et ont été mis en avant dans plusieurs études. Il s'agit d'une modification importante de l'état de surface (rugosité), une profondeur traitée limitée, des difficultés de mise en œuvre, etc. Aussi, d
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32

Magda, Geoffrey. "Study of metallic architected materials under mechanical and electromagnetic loads." Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAX138.

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Des développements récents qui ont lieu dans les domaines des meta-matériaux et des couplages magnéto-mécaniques visent à la fois à améliorer des propriétés existantes ainsi que de créer de nouveaux comportements. Le but de cette thèse est d’étudier plus particulièrement les couplages entre matériaux magnétisables, courants électriques et comportements mécaniques. Tout d’abord nous détaillons le modèle multi-physique requis pour traiter ce problème. Lorsque c’est possible une résolution analytique est fournie. Néanmoins, pour traiter des géométries plus complexes une approche variationelle est
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33

Chazottes-Leconte, Aurélien. "Conception et fabrication d'un dispositif de mise en compression par impulsions électro magnétiques (EMP)." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1082.

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Les procédés de traitement de surface sont utilisés à l'échelle industrielle pour améliorer les performances de pièces mécaniques en introduisant des contraintes résiduelles de compression. Cette mise en compression de surface permet de limiter l'amorçage et la propagation de fissures dans le matériau. Ceci permet d'augmenter de façon significative la durée de vie en fatigue des pièces mécaniques ainsi traitées. L'utilisation de ces procédés dans l'industrie a démontré leur efficacité, mais aussi leurs limitations et inconvénients. Les défauts récurrents consistent en une profondeur traitée fa
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34

CURRELI, NICOLA. "2D material-based electromagnetic devices." Doctoral thesis, Università degli Studi di Cagliari, 2020. http://hdl.handle.net/11584/284406.

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The realization of technologically-advanced components to be used in optoelectronic systems is one appealing research area in modern electronics. The electronics industry has to face several problems related to the cost of materials used in the implementation of the devices and also to pursue more sustainable growth without the use of polluting processes. To address these issues, alternative materials and processes must be developed considering the device requirements. A possible solution could be the use of two-dimensional (2D) nanomaterials due to their exceptional properties, together with
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35

Penfold, Justin David John. "Controlled electromagnetic rewarming of cryopreserved biological materials." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319611.

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36

Lu, Jie Ph D. Massachusetts Institute of Technology. "Novel electromagnetic radiation in Left-Handed materials." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/39566.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2006.<br>Includes bibliographical references (leaves 137-141).<br>In this thesis, Cerenkov radiation of a moving charged particle inside a Left-Handed material (LHM) is studied through both theory and numerical simulations. A LHM is a material whose permittivity and permeability have negative real parts. In the analysis of this thesis, the general theory of Cerenkov radiation was first studied for the unbounded regions filled with LHM. The physical meanings of different Green's functions are discussed, and finally the se
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37

Ramesh, Prashanth. "Smart Materials for Electromagnetic and Optical Applications." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343821988.

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38

Pressl, Daniel G. (Daniel Gerd). "Investigation of electromagnetic welding." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53253.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>We propose several methodologies to study and optimize the electromagnetic process for Electromagnetic Forming (EMF) and Welding (EMW), thereby lowering the necessary process energy up to a factor of three and lengthening the life-time of EMW compression coils. We present a new theoretical approach to calculate a so-called critical kinetic energy to achieve a proper EMW joint, which is related to the volume
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39

Gollub, Jonah Nathan. "Characterizing artificial electromagnetic materials and their hybridization with fundamentally resonant magnetic materials." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p3339169.

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Thesis (Ph. D.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed Feb. 6, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 109-115).
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40

Figueiras, Fábio Gabriel Nazário. "Study of multiferroic materials." Doctoral thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/4271.

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Doutoramento em Física<br>The present PhD work aims the research and development of materials that exhibit multiferroic properties, in particular having a significant interaction between ferromagnetism and ferroelectricity; either directly within an intrinsic single phase or by combining extrinsic materials, achieving the coupling of properties through mechanic phenomena of the respective magnetostriction and piezoelectricity. These hybrid properties will allow the cross modification of magnetic and electric polarization states by the application of cross external magnetic and/or electric fie
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41

Ruff, Bradley M. "Carbon Nanotube and Nanoparticle Materials for Electromagnetics Applications." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1367925618.

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42

Murad, Mark Richard. "Radiation View Factors Between A Disk And The Interior Of A Class Of Axisymmetric Bodies Including Converging Diverging Rocket Nozzles." Cleveland State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1210962269.

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43

Hussaini, Sheena. "Integrated Magnetic Components for RF Applications." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1431951933.

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44

Naeem, Majid. "Theory, modelling, and applications of advanced electromagnetic materials." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/31858.

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A multitude of recent work predicts many novel concepts based on the availability of non-natural materials; some prominent examples include transformation optics (TO) and perfect lens. The interest in this eld has grown dramatically due to spec- ulated possibility to allow for continuously varying material properties to steer the incident wave at will, such as for the TO. The posed challenges for their realisation include the limitations of numerical modelling and manufacturing techniques. A de- sign scheme has been proposed, in this thesis, for composite materials: the desired electromagnetic
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45

Gupta, Bhaawan. "Advanced electromagnetic non-destructive testing on creep degraded high chromium ferritic steels : Characterization, Modelling and physical interpretation." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI074.

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Sous des températures et des pressions élevées constantes, les matériaux métalliques de structure subissent une dégradation mécanique par fluage qui entraîne des changements microstructuraux. Ces derniers, s'ils ne sont pas surveillés à temps, peuvent entraîner des incidents sérieux, notamment dans le domaine de la production d’énergie électrique (centrales électriques). Pour déterminer les changements microstructuraux, le matériau doit avoir une forme et une taille spécifiques pour que l'analyse des images obtenues par microscopie électronique à balayage, diffraction par rétrodiffusion d'élec
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46

Rafiq, Muhammad Nadeem. "Carbon Microfiber Material for Electromagnetic (Shielding) Applications." Diss., North Dakota State University, 2015. http://hdl.handle.net/10365/25293.

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Electromagnetic shielding is becoming more and more important with the abundance of wireless devices. Therefore a need has arisen for more versatile, flexible and low-cost solutions for shielding. For these requirements, carbon microfiber material has been proposed for electromagnetic shielding applications. For this purpose its shielding effectiveness has been measured and modeled in a simulation environment. A parametric simulation was conducted for the material property ?conductivity? and the results were compared to measured ones. These simulation results were also verified by the analytic
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47

Sen, Saffet Gokcen. "Investigation Of Electromagnetic Wave Propagation In Double Negative Materials." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609748/index.pdf.

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This thesis analyzes some aspects of electromagnetic wave propagation in double negative materials. Double negative materials have negative refractive indices. They are backward-wave materials. Plane waves undergo negative refraction at interfaces between double positive and double negative media. Causality principle implies these properties. High frequency plane wave scattering from a double negative infinitely long cylinder has been analyzed by using modified Watson transform, geometrical optics and Mie series. Mie series results and the modified Watson transform results have been found to b
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48

Abram, Eric Ryan. "Electromagnetic materials characterization of ferromagnetic composites at microwave frequencies." [Ames, Iowa : Iowa State University], 2007.

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49

Mackay, Tom G. "Homogenisation of linear electromagnetic materials : theoretical and numerical studies." Thesis, University of Glasgow, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368749.

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Youngs, Ian John. "Electrical percolation and the design of functional electromagnetic materials." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271628.

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