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Dissertations / Theses on the topic 'Electret Effect'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Temnov, D. E., and E. E. Fomicheva. "Electret Properties of Polyethylene Composite Films with Talc." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35636.

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The electret properties of polyethylene films with nanodimensional particles of talc have been investigated. The stable of electret state of polyethylene was improved with the addition of talc. This result can be explained by the fact that hydroxyl groups, which absorbs water, are locate on the peripheral area of talc particles. Accordingly, number water molecules in the polymer volume become less, and, therefore, the conductivity of a material should be decrease, and the stability of the electrets state should be increase. The adding of talc in polyethylene leads to a new relaxation proc

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2

Saxena, Vishal. "Hot electron luminescence from GaAs : electric field effects." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624144.

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3

Reuter, Kay. "Elektrostatische Aufladung organischer Feldeffekttransistoren zur Verbesserung von gedruckten Schaltungen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-91992.

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Topic of the thesis is the production of unipolar digital circuits by means of mass-printing technologies. For this purpose accumulation-mode and depletion-mode field-effect transistors have been used. To realize depletion-mode field-effect transistors charges are injected and stored in the gate-dielectric. Consequently, the charge transport on the semiconductor-dielectric interface is influenced and the threshold voltage can be controlled. To inject charges into the dielectric different technologies have been used and will be discussed in terms of their process parameters. Finally, fully-prin

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4

Xu, Yong. "Étude des effets de la lumière sur les propriétés électriques d’une jonction tunnel magnétique." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0256/document.

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Cette thèse porte sur l’étude des effets de la lumière sur une jonction tunnel magnétique (JTM). Une JTM est constituée d’une couche isolante d’épaisseur nanométrique située entre deux couches magnétiques. Lorsqu’un courant électrique est injecté dans une telle structure, une tension apparaît. Cette tension dépend de l’orientation relative des aimantations des 2 couches magnétiques : c’est l’effet de magnétorésistance tunnel. Nous avons pu montrer dans ce travail de thèse qu’une observation similaire est obtenue lorsque la jonction est irradiée avec de la lumière. En étudiant l’influence du su

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5

Vistoli, Lorenzo. "Topological and electronic properties of electron-doped manganite thin films." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS113.

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Les couches minces d'oxyde présentent un large éventail de phénomènes physiques et riches diagrammes de phase, ajustables par l'ingénierie des déformations et des interfaces. Le CaMnO3, en particulier, est extrêmement sensible au dopage et aux contraintes d’épitaxie et, lorsqu'il est élaboré sous compression, il passe d'un état isolant et antiferromagnétique à un état métallique et faiblement ferromagnétique à seulement 2% de dopage au Ce.Nous avons utilisé une combinaison de spectroscopie de photoémission résolue en angle, de magnétotransport et de théorie de la fonctionnelle de la densité po

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6

Reuter, Kay. "Elektrostatische Aufladung organischer Feldeffekttransistoren zur Verbesserung von gedruckten Schaltungen." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2011. https://monarch.qucosa.de/id/qucosa%3A19751.

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Topic of the thesis is the production of unipolar digital circuits by means of mass-printing technologies. For this purpose accumulation-mode and depletion-mode field-effect transistors have been used. To realize depletion-mode field-effect transistors charges are injected and stored in the gate-dielectric. Consequently, the charge transport on the semiconductor-dielectric interface is influenced and the threshold voltage can be controlled. To inject charges into the dielectric different technologies have been used and will be discussed in terms of their process parameters. Finally, fully-prin

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7

Tsemekhman, Vadim. "Charge relaxation, current distribution, and breakdown of the quantum Hall effect /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/9739.

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8

Nakamura, K., K. Kato, H. Koide, Y. Hatta, and H. Okubo. "Fundamental Property of Electric Field in Rapeseed Ester Oil based on Kerr Electro-Optic Measurement." IEEE, 2006. http://hdl.handle.net/2237/9624.

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9

Caló, A. (Antonio). "Electron spectroscopy of atoms and molecules using synchrotron radiation, UV radiation and electron impact." Doctoral thesis, University of Oulu, 2007. http://urn.fi/urn:isbn:9789514286650.

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Abstract The present thesis investigates the electronic structure of selected atoms and molecules in vapor phase. Electron spectroscopy is applied for studying the electronic transitions following excitation and ionization with electron and photon bombardment. The work focuses on the photoionization and Auger decay of selected noble gasses, and on the photoionization and Auger decay of core ionized or resonant excited alkali halide molecules. The experimental results are compared with theoretical predictions.

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10

Tan, Weichao. "Electron states in low dimensional structures." Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294478.

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11

Cory, Mark. "CONVENTIONAL AND ZVT SYNCHRONOUS BUCK CONVERTER DESIGN, ANALYSIS, AND MEASUREMENT." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2759.

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The role played by power converting circuits is extremely important to almost any electronic system built today. Circuits that use converters of any type depend on power that is consistent in form and reliable in order to properly function. In addition, todayÂ s demands require more efficient use of energy, from large stationary systems such as power plants all the way down to small mobile devices such as laptops and cell phones. This places a need to reduce any losses to a minimum. The power conversion circuitry in a system is a very good place to reduce a large amount of unnecessary loss. Th

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12

Srivastava, Titiksha. "Ingénierie et contrôle dynamique des propriétés interfaciales dans les films ultra-minces pour ajuster les textures de spin magnétique." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAY001/document.

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Le contrôle du magnétisme aux interfaces s’est avéré essentiel pour la spintronique et ses applications, en particulier celles basées sur des structures chirales de spin appelées skyrmions magnétiques. Ces skyrmions, décrits comme des solitons magnétiques, sont de potentiels vecteurs d’information. Dans des empilements ultraminces du type métal lourd / ferromagnétique / isolant, les skyrmions sont stabilisés par une interaction d’échange antisymétrique d’interface appelée interaction de Dzyaloshinskii-Moriya (DMI); celle-ci entre en compétition avec d’autres interactions telles que l’interacti

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13

Bingham, Stephen John. "Magnetic circular dichroism and electron paramagnetic resonance of transition ions." Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357179.

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14

Ea, Chee Seng. "Electron beam proximity effect correction." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312871.

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15

Marcotte, Michèle. "Ohmic heating of viscous liquid foods." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ55357.pdf.

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16

Haddad, Peter Alexander. "Biofilm Treatments with Electric Currents." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30947.

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The Problem: Biofilms are a community of bacteria that cause infections which are resistant to the immune system and antimicrobial treatments, posing a significant threat for patients with implantable and indwelling medical devices. Purpose: The purpose of this research is to effectively treat biofilms utilizing electric currents assisted by antibiotics. Method: Evaluated the impact of direct electric current with or without vancomycin against Staphylococcus epidermidis biofilms. Results: (1) Electric current reduced the S. epidermidis biofilm and (2) increased the effectiveness of vancomycin.

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17

Xu, Kunning Gabriel. "Ion collimation and in-channel potential shaping using in-channel electrodes for hall effect thrusters." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44830.

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This work focuses on improving the thrust-to-power ratio of Hall effect thrusters using in-channel electrodes to reduce ion-wall neutralization and focus the ion beam. A higher thrust-to-power ratio would give Hall thrusters increased thrust with the limited power available on spacecraft. A T-220HT Hall thruster is modified in this work to include a pair of ring electrodes within inside the discharge channel. The electrodes are biased above anode potential to repel ions from the walls and toward the channel centerline. Theoretical analysis of ion loss factors indicate that ion-wall neutralizat

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18

Göres, Jörn. "Correlation effects in 2-dimensional electron systems composite fermions and electron liquid crystals /." [S.l. : s.n.], 2004. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11612017.

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19

Huang, Qianwei. "Effects of external stimuli on the microstructures of ferroelectric materials." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23031.

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Ferroelectric materials are frequently used in electronic devices because of their excellent ferroelectric, piezoelectric and dielectric properties. These properties are closely related to the microstructures of materials. In practical terms, ferroelectric fatigue is a significant issue that impedes the extensive application of these materials in electronic devices and that is also relevant to their microstructures. To optimise the scientific design of ferroelectrics for next-generation electronic devices, a comprehensive understanding of how ferroelectric microstructures react to external sti

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20

Lesne, Edouard. "Non-Equilibrium Spin Accumulation Phenomena at the LaAlO3/SrTiO3(001) Quasi-Two-Dimensional Electron System." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066417/document.

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Nous avons étudié la création, manipulation et détection d’accumulation de spin hors-équilibre dans l’hétérostructure d’oxydes non-magnétique LaAlO3/SrTiO3 (LAO/STO), hôte d’un système d’électron quasi-bidimensionnel (q2DES). Combiné à des expériences d’injection de spin, nous employons l’effet Hanle (à 3 terminaux) pour sonder l’amplitude de l’accumulation de spin dans des jonctions tunnel Co/LAO/STO. Nous observons une large amplification du signal de spin, attribuée à des processus d’effet tunnel séquentiel préservant le spin via des états localisés avec des longs temps de vie de spin. Une

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21

Lee, Jack Monroe Jr. "Seasonal Patterns of Melatonin, Cortisol, and Progesterone Secretion in Female Lambs Raised Beneath a 500-kV Transmission Line." PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/1317.

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There is ongoing controversy about the possibility of adverse biological effects from environmental exposures to electric and magnetic fields. These fields are produced by all electrical equipment and appliances including electrical transmission lines. The objective of this environmental science study was to investigate the possible effects of a high voltage transmission line on domestic sheep (Ovis aries L,), a species that can often be found near such lines. The study was primarily designed to determine whether a specific effect of electric and magnetic fields found in laboratory animals als

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22

GALANTI, FRANCESCO. "Electric field effect in disordered thin films." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2823944.

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23

Li, Yuesong. "Electronic structure and spectra of few-electron quantum dots." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-05172007-110916/.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2008.<br>Minqiang Li, Committee Member ; Constantine Yannouleas, Committee Member ; Michael Pustilnik, Committee Member ; Mei-Yin Chou, Committee Member ; Uzi Landman, Committee Member.

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24

Chiu, Lawrende 1968. "Comparison of quality change kinetics in ham emulsions cooked under conventional and ohmic heating conditions." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33730.

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Ohmic heating is an electrical resistance heating resulting from the passage of electrical current through an electrically conductive material offering some resistance. Most food products possess sufficient electrical conductivity to be able to take advantage of ohmic heating. This research was undertaken to evaluate the quality changes associated with fine ham emulsions prepared under ohmic heating conditions as compared to those produced by conventional heating.<br>In the first part of the study, kinetics of quality changes (color, texture, water holding capacity, cooking loss and water acti

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25

Hsu, Fang-Chi. "Electric field effect in "metallic" polymers." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127229727.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xxi, 177 p.; also includes graphics (some col.). Includes bibliographical references (p. 167-177). Available online via OhioLINK's ETD Center

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26

ANDERSSON, JOHAN, and RICKARD HÖGLUND. "Electric Load Driven Longboard." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279809.

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This bachelor’s thesis aims to show an extensive overview of all the parts that build up an electric load driven longboard and see if a load controlled longboard can be seen as a safe, comfortable and convenient alternative to the more common remote controlled longboard. The thesis will also answer how weight can be measured on a longboard in the most effective way, what the most comfortable riding technique is and what a good motor-battery configuration to be able to travel at 30 km/h and 10 km would be. The longboard measures the weight distribution with load cells located between the deck a

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27

Lizhen, Ruan. "Optical waveguide study of electric field effects on liquid crystals." Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261615.

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28

McMorran, Benjamin James. "Electron Diffraction and Interferometry Using Nanostructures." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/194029.

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Here it is demonstrated that nanofabricated structures can be used as electron optical elements in new types of electron interferometers. This enables novel investigations with electrons analogous to experiments in light and atom optics. Far field diffraction from a single nanograting is used to examine the force on a charge moving in close proximity to a surface. Near field diffraction from the nanograting is investigated in a Talbot interferometer. It is found that electron waves form replicas of the grating in free space, and these replicas can be de-magnified using illumination by a conver

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29

Somhlahlo, Nomabali Nelisiwe. "A Hall-effect study of as-grown and hydrogenerated n-type ZnO layers grown by MOCVD." Thesis, Nelson Mandela Metropolitan University, 2006. http://hdl.handle.net/10948/444.

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A series of as-grown ZnO layers have been electrically characterised by the temperature dependent (20 – 300 K) Hall-effect technique. The ZnO layers were grown by metal organic chemical vapour deposition (MOCVD) on glass substrates under various growth conditions. The temperature dependent Hall-effect technique produced mobility and carrier concentration measurements. These measurements were found to be reproducible and reliable. The carrier concentration data for the layers was fitted by the charge balance equation to accurately determine the donor level and corresponding donor concentration

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30

Ung, Kim-Chau. "Effects of electron-electron and electron-phonon interactions in narrow-band systems." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186622.

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Different ordered states, CDW, BOW, and SDW, are investigated theoretically for both interacting and noninteracting cases as well as for different band filling systems. For noninteracting case, we find that the BOW is always accompanied by the CDW and vice versa in one-dimensional system for commensurability > 2. The strong electron-molecular vibration coupling drives both CDW and BOW, and plays thus an important role in the stabilization of the CDW state for these non-half-filled materials. Within the simply extended Peierls-Hubbard model, the experimentally observed lattice distortion of MEM

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31

Fernie, Kimberly J. "Effects of electric and magnetic fields on selected physiological and reproductive parameters of American kestrels." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34959.

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Birds nest under electric and magnetic fields (EMFs) generated by transmission liners which may affect their reproductive success and/or melatonin governing their circadian and circannual cycles. Over two years, captive kestrels were used to determine whether EMFs affect their plasma melatonin concentrations and their reproductive success. EMFs were equivalent to that which wild kestrels are exposed to while nesting under 735 kV transmission fines, and daily exposure used in the captive study (88--98% time budget) was potentially equivalent to that of wild kestrels (90% X, 80% X). Captive kest

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32

Ford, Richard Anthony. "Optical studies of low-dimensional electron systems at high magnetic fields." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320157.

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33

Babinet, Cyril. "Next generation of current sensors for aeronautics preliminary designs /." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/29709.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2008.<br>Committee Co-Chair: Dr. Jianmin Qu; Committee Co-Chair: Dr. Mohammed Cherkaoui; Committee Member: Dr. Christophe Giraud-Audine; Committee Member: Dr. Nico Declercq. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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34

Sagou, Sagou Jean-Pierre. "Influence de cations métalliques sur les propriétés physico-chimiques de carboxyméthyl-dextrane fonctionnalisé." Thesis, Vandoeuvre-les-Nancy, INPL, 2008. http://www.theses.fr/2008INPL072N/document.

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Le présent travail est destiné à acquérir un ensemble de données expérimentales et quantitatives cohérentes sur le comportement physico-chimique d'un système constitué d'un polysaccharide linéaire, flexible et chimiquement fonctionnalisé en groupements carboxyliques, le carboxyméthyl-dextrane (CMD) et d'un milieu ionique comportant des cations d'affinité variée pour ces fonctions : Na+, Ca2+ et Cd2+. La densité de sites et leur constante de dissociation - complexation ont été déterminées par titrage potentiométrique avec des électrodes spécifiques (proton et cadmium). Les propriétés électro-hy

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35

Guthrie, Daniel K. "Analysis of quantum semiconductor heterostructures by ballistic electron emission spectroscopy." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/14915.

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36

Tenorio-Pearl, Jaime Oscar. "Coherent control of a trapped electron in a disordered dielectric." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708428.

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37

Bao, Yunjuan. "Resonant spin Hall effect in two-dimensional electron systems." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B34627819.

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38

Tripp, David William. "The thermal regime during electron beam hearth remelting." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26748.

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Electron beam hearth remelting is extensively used in refining of superalloys, titanium alloys and the recycling of these materials. The removal of impurities and exhogenous particles during the hearth melting operation depends primarily on the time at temperature relationship developed within a pool of molten metal. In the past hearth melters have acted largely on empirical evidence to specify such parameters as melt rates, power levels and skull sizes. This work describes a mathematical model which could be used to predict certain parameters (such as pool volume or alloy element evaporation

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39

Chen, Lu. "Computerized evaluation of parameters for HEMT DC and microwave S parameter models." Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1179518920.

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40

Peräntie, J. (Jani). "Electric-field-induced dielectric and caloric effects in relaxor ferroelectrics." Doctoral thesis, Oulun yliopisto, 2014. http://urn.fi/urn:isbn:9789526204406.

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Abstract In this thesis, dielectric and thermal behaviours due to the application of an electric field were studied in relaxor ferroelectric (1−x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) and (1−x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 (PZN-PT) systems of great technological importance. Special attention was given to the behaviour of the electric-field-induced phase transitions and electrocaloric effect, which are closely related to the existing and potential applications. Reactive sintering or columbite methods were used to fabricate polycrystalline PMN-PT ceramics with various compositions (x=0−0.3). In addition,

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41

Lesne, Edouard. "Non-Equilibrium Spin Accumulation Phenomena at the LaAlO3/SrTiO3(001) Quasi-Two-Dimensional Electron System." Electronic Thesis or Diss., Paris 6, 2015. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2015PA066417.pdf.

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Nous avons étudié la création, manipulation et détection d’accumulation de spin hors-équilibre dans l’hétérostructure d’oxydes non-magnétique LaAlO3/SrTiO3 (LAO/STO), hôte d’un système d’électron quasi-bidimensionnel (q2DES). Combiné à des expériences d’injection de spin, nous employons l’effet Hanle (à 3 terminaux) pour sonder l’amplitude de l’accumulation de spin dans des jonctions tunnel Co/LAO/STO. Nous observons une large amplification du signal de spin, attribuée à des processus d’effet tunnel séquentiel préservant le spin via des états localisés avec des longs temps de vie de spin. Une

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42

Saunders, Theo Graves. "Effect of electric current on ceramic processing." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/25943.

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This work was on the effect of electric current on the processing of ceramics. The focus was on electromigration/electrochemistry and plasma effects. While there is no solid evidence that there is plasma in Spark Plasma Sintering, (SPS), newer techniques e.g. flash, use different conditions so there is an interest in understanding the conditions under which a plasma forms. The minimum arcing voltage was found from literature to be from 10-15V for materials of interest. This is above that found in SPS (10V). However, due to the many contact points in a powder compact much higher voltages (50V)

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43

Mihaylov, Deyan Ivov. "Hot Electron Effect in Ultrathin Photovoltaic Junctions." Thesis, North Dakota State University, 2012. https://hdl.handle.net/10365/26800.

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The focus of the research work described in the following thesis is increasing the efficiency of photovoltaic devices by reducing hot carrier thermalization losses. In principle this can be achieved by reducing the size of the absorber down to lengths comparable to the thermalization length for hot carriers. With the use of ultrathin absorbers hot carrier can be collected before they have reached thermal equilibrium with the lattice. The theoretical work on the subject is comprised of improving the empirical relationship developed in the most recent publication on the topic by. By making the a

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44

Roy, Mervyn. "Many-electron effects in EXAFS." Thesis, University of Leicester, 1999. http://hdl.handle.net/2381/30626.

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Extended X-ray absorption fine structure (EXAFS) spectroscopy is an experimental technique useful in the study of non-crystalline materials. EXAFS is analysed by comparing experimental to theoretical spectra. Many-electron effects in EXAFS are important, however, EXAFS theory has been developed using a single electron formalism with many-body effects included via empirical factors. Multiple electron excitations reduce the EXAFS amplitude and hence affect the determination of coordination numbers. At present, intrinsic amplitude reduction effects are modelled by a constant factor whilst extrins

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45

Elsafi, Bassem. "Etude de l’effet de la température sur les courants induits des matériaux isolants soumis à l’irradiation électronique dans un microscope électronique à balayage." Thesis, Reims, 2013. http://www.theses.fr/2013REIMS010.

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Les phénomènes de charge des isolants ont été étudiés à l'aide d'un MEB (Microscope Electronique à Balayage). L'effet de la température sur ces phénomènes a été également discuté. Cette étude concernera, plus particulièrement, la mesure des courants induits sous irradiation électronique (courants de conduction et de déplacement) et la détermination du rendement d'émission électronique secondaire. Notre travail est porté en premier lieu sur des échantillons de verre à base de silice. Nous avons prouvé que l'augmentation de la température fait diminuer la capacité de charge du verre. Les résulta

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46

Thiney, Vivien. "Detection of travelling electrons in the Quantum Hall effect regime with a singlet-triplet quantum bit detector." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY069/document.

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L’optique quantique avec électron est un domaine de recherche en expansion depuis ses débuts au cours des années 90 prenant suite aux premières expériences d’interférence avec électrons réalisées dans les années 80. Ce domaine est dédié à la réalisation d’expérience d’optique quantique avec des électrons plutôt que des photons. Leur intérêt est double, d’une part les électrons étant des fermions de nouveaux phénomènes, en comparaison des photons qui sont des bosons, peuvent être observés. L’électron anti-bunching, en comparaison du bunching des photons obtenu dans des expériences de corrélatio

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47

Dannenmayer, Käthe. "Scaling laws and electron properties in Hall effect thrusters." Phd thesis, Université d'Orléans, 2012. http://tel.archives-ouvertes.fr/tel-00797732.

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Abstract:

All satellites need a propulsion system for orbit correction maneuvers. Electric Hall effect thrusters are an interesting technology for space applications. The big advantage compared to chemical propulsion devices is the higher specific impulse Isp, a higher ejection speed and thus a substantial gain in terms of propellant consumption. In a Hall effect thruster the ions are created and accelerated in a low pressure discharge plasma in a magnetic field. The first part of the work concerns scaling laws for Hall effect thrusters. A semi-empirical scaling model based on analytical laws and relyin

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Bao, Yunjuan, and 暴云娟. "Resonant spin Hall effect in two-dimensional electron systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B34627819.

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Aikebaier, Faluke. "Effects of electron-electron interaction in pristine and doped graphene." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-37467.

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Abstract:

The goal of this master thesis is to investigate the eect of electron-electron interaction on electronic properties of graphene that can be measured experimentally. A tight-binding model, which includes up to next-nearest-neighbor hopping, with parameters tted to density functional theory calculations, has been used to describe the electronic structure of graphene. The electron-electron interaction is described by the Hubbard model using a mean- eld approximation. Based on the analysis of dierent tight-binding models available in the literature, we conclude that a next-nearest-neighbor tight-b

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50

Gompertz, Martin. "Studies of electron tunnelling low-dimensional GaAs/(AlGa)As heterostructures." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285720.

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