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Dissertations / Theses on the topic 'Sol-gel materials'

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Published: 4 June 2021
Last updated: 26 July 2025

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1

Chisham, Jason E. (Jason Edward). "Sol-gel materials for integrated optics." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23992.

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The sol-gel process is a low temperature solution route to amorphous and crystalline materials. Organic modification of the precursors allows the formation of organic-inorganic composite materials. We use the sol-gel process to produce an organically-modified ceramic for integrated optical applications. Photosensitive organic components allow the fabrication of passive integrated optical devices by photolithography. We demonstrate the fabrication and characterization of channel waveguides, waveguide devices and gratings in this material. Active devices based on the emission of erbium at 1.55 $
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2

Wallington, Sally-Ann. "Sol-gel materials for optical chemical sensing." Thesis, University of Kent, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308948.

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3

Savin, Shelley. "Sol-gel derived materials for chemical sensing." Thesis, University of Kent, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396920.

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4

Fan, Q. "Sol-gel materials for photoelectronic device applications." Thesis, University of Sheffield, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366155.

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5

Hassan, Shereen Hassan Mohamed Gaber. "Sol-gel preparation of silicon nitride materials." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/72951/.

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Sol-gel techniques are mainly used for oxides but are of growing interest for non-oxide materials. They allow formation of solid materials through gelation of precursor solutions and can be used to control composition and to produce a large number of useful morphologies such as films, monoliths, aerogels, foams and materials with ordered pores on various length scales. Often the synthesis of non-oxide materials using sol-gel methods has focused on producing powders for applications such as catalysis, where controlled porosity and basic catalytic sites are the point of interest. In this thesis,
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6

Himmelhuber, Roland. "Sol-Gel Materials for Optical Waveguide Applications." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/325227.

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Sol-gel materials are an important material class, as they provide for easy modification of material properties, good processability and routine synthesis. This allows for the tailoring of the material properties to the needs of specific device designs. In the case of electro-optic modulators with a coplanar or coplanar strip (CPS) electrode design, sol-gel cladding materials can be used to confine the light to the electro-optic material as well as to concentrate the electrical field used for poling and driving the modulator. Another important material property that can influence the poling ef
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7

Holland, M. A. "Structural characterisation of novel sol-gel derived materials." Thesis, University of Kent, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369690.

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8

Phillips, Katherine Reece. "Sol-Gel Chemistry of Inverse Opals." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493452.

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Controlling nano to microscale structuration enables one to alter a material’s optical, wetting, mechanical, and chemical properties. Structuration on this scale can be formed from spherical building blocks; in particular, monodisperse, spherical colloids assemble into crystals that can be used to template an ordered, porous structure known as an inverse opal. The structure’s porosity and periodicity provide control over both light (photonic effects) and fluid flow (wetting effects). Controlling the composition allows chemical functionality to be added to the ordered, porous structure. Inverse
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9

Fabes, Brian David. "Strengthening of glass by sol-gel coatings." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/14699.

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10

Silverman, Lee Arnold 1959. "Sol-gel derived tantalum oxide thin films." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14835.

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11

Glaser, Raymond Hans. "Structure-property behavior of sol-gel derived hybrid materials." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/54327.

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Structure-property studies were carried out on a number of different hybrid sol·gel materials. Multifunctional silicon ethoxides were prepared and studied by solid state ²⁹Si NMR and Raman spectroscopy to determine the type of silicate structures formed and the degree of conversion attained by the sol-gel process under previously established reaction conditions. New procedures were developed to incorporate titaniumisopropoxide as well as Al, Zr and Zn acetylacetonates into functlonalized polyltetramethylene oxide) modified sol-gel systems. The physical properties of titanium containing poIy(te
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12

Wingfield, Charles. "Fabrication of Anisotropic Sol-gel Materials by Photo-Crosslinking." VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/2706.

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This is a report on the fabrication and characterization of anisotropic, porous materials: functionally graded cellular and compositionally anisotropic aerogels. This new class of materials was fabricated by photopolymerization of selected regions of a homogeneous monolith using visible light. Visible light is not significantly absorbed and not significantly scattered by organic molecules and oxide nanoparticles in wet gels and it allows fabrication of deeply penetrating, well-resolved patterns. Simple variations of the exposure geometry allowed fabrication of a wide variety of anisotropic mat
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13

Joardar, Saikat Sutej. "Siloxane modified hybrid materials by the sol-gel process." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-07282008-134057/.

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14

Doss, Calvin James. "Raman studies of the nanostructure of sol-gel materials." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-164932/.

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15

Brennan, Anthony Bartholomew. "Structure/property behavior of inorganic/organic sol-gel derived hybrid materials." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-09162005-115036/.

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16

Sparks, Andrew William 1977. "Sol-gel synthesis of one-dimensional photonic bandgap structures." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9557.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1999.<br>Includes bibliographical references (p. 26-27).<br>A series of one-dimensional photonic bandgap devices were fabricated using SiO2 and TiO2 films deposited from solution by the sol-gel method. A dielectric mirror, or broadband interference filter, was fabricated by alternating quarter-wave optical thickness layers of the two films on a silicon substrate for a total of six layer pairs. This device exhibited an omnidirectional photonic bandgap of 450 nm in TE-polarization and 110 nm in TM-p
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17

Hasegawa, George. "Studies on Porous Monolithic Materials Prepared via Sol-Gel Process." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/157811.

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18

Noble, Kate. "Preparation of organically modified mesoporous materials via sol-gel processing." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340139.

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19

Newport, Anne Christine. "The sol-gel synthesis of anti-Stokes luminescent glass materials." Thesis, University of Greenwich, 2000. http://gala.gre.ac.uk/6257/.

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The materials commonly used and the synthetic problems that arise in the field of transparent glass materials with anti-Stokes luminescent properties are described. The literature has shown that rare earth doped oxide glasses, whilst chemically durable and relatively easy to manufacture, have weak anti-Stokes emissions, whereas rare earth doped fluoride materials have considerably improved anti-Stokes luminescence but are less chemically stable and highly reactive. Recent interest in glass ceramics has proposed alternative matrices with the advantages of both fluoride and oxide host materials.
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20

Sierra, salazar Andrés Felipe. "Waterborne catalytic materials with original design." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2017. http://www.theses.fr/2017ENCM0014/document.

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Catalysis is one of the Green Chemistry Principles given its importance for limiting environmental impacts and improving current processes, as well as for developing new sustainable processes and products. In order to provide more performant catalysts, this study provides a novel preparation method for controlling the distribution of metal nanoparticles (NPs) within hierarchically meso- and macroporous catalysts. It consists of the combination of latex synthesis, sonochemistry and sol-gel process. All these steps can be carried out in water, reducing environmental impact. The first step is the
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21

Suratwala, Tayyab Ishaq 1970. "Photostability of laser dyes in sol-gel-derived hosts." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/290697.

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Improving the photostability of laser dyes within sol-gel derived hosts has been the focus of this study. To accomplish this, synthetic routes were established to incorporate laser dyes within various sol-gel matrices, the mechanisms of dye photodegradation were determined, and molecular engineering techniques were employed to improve the photostability of the dye doped sol-gel hosts. Various Coumarin (silylated and unsilylated) and Pyrromethene laser dyes were incorporated within sol-gel derived hosts ranging from SiO₂ xerogel films to SiO₂:PDMS Polyceram monoliths which were optically transp
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22

Gao, Xiaonan. "Sol-Gel Assembly of Metal Nanostructures into Metallic Gel Frameworks and Their Applications." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4319.

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The advent of nanoscience and nanotechnology has sparked many research forefronts in the creation of materials with control over size, shape, composition, and surface properties.1,2 However, for most of the applications, nanoscale materials need to be assembled into functional nanostructures that exhibit useful and controllable physical properties. Therefore, numerous efforts on the assembly of nanoparticles (NPs) using organic ligands, polymers and polyelectrolytes have been reported.3,4 However, the interactions between NPs are mediated by intervening ligands, which are detrimental to charge
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23

Hayase, Gen. "Studies on sol-gel-derived monolithic porous polyorganosiloxanes." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188507.

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24

Sun, Zhengfei Wei Yen. "Novel sol-gel nanoporous materials, nanocomposites and their applications in bioscience /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/556.

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25

Fragkiadakis, Charalampos. "Integration of sol-gel frequency agile materials for tunable RF devices." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7309.

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This thesis focuses on the use of high permittivity tunable dielectrics and more specifically sol-gel ferroelectric thin films for low cost, high performance tunable devices such as varactors and filters at RF and microwave frequencies. The top- ics covered include measurement techniques for the characterization of tunable dielectrics at low and microwave frequencies, fabrication processes, electrical and acoustic modeling of thin film ferroelectric varactors, performance optimization using conductive electrodes, realization of tunable microwave circuits and inte- gration of tunable dielectric
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26

Malek, Mohamad Zahid Abdul. "Synthesis, processing and characterisation of photochromic dye doped sol-gel materials." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310760.

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27

Li, Chenghong. "Inorganic-Organic Sol-Gel Derived Hybrid Materials as Abrasion Resistant Coatings." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/39013.

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Inorganic-organic hybrid materials have been developed using sol-gel reactions of a trialkoxysilylated organic compound and a metal or semi-metal alkoxide and applied as coatings on polymeric or metallic substrates. Many of these coatings have demonstrated good to excellent abrasion resistance. Abrasion resistant coatings were prepared by hydrolysis and condensation of mixtures of a triethoxysilylated diethylenetriamine (f-DETA), tetramethoxysilane (TMOS), water and an alcohol in the presence of an acid catalyst (a one-step hydrolysis approach). The influences of many formulation and proce
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28

Lu, Dong. "Hybrid organic-inorganic sol-gel materials and components for integrated optoelectronics." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280624.

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On the technical platform of hybrid organic-inorganic sol-gel, the integrated optoelectronics in the forms of heterogeneous integration between the hybrid sol-gel waveguide and the high refractive index semiconductors and the nonlinear functional doping of disperse red chromophore into hybrid sol-gel is developed. The structure of hybrid sol-gel waveguide on high index semiconductor substrate is designed with BPM-CAD software. A hybrid sol-gel based on MAPTMS and TEOS suitable for lower cladding for the waveguide is developed. The multi-layer hybrid sol-gel waveguide with good mode confinement
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29

Burglova, Kristyna. "Design of easily accessible organosilanes for functional sol-gel hybrid materials." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2012. http://www.theses.fr/2012ENCM0021.

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Les organosilices sont des matériaux en plein essor, qui combinent les propriétés des fragments organiques et ceux de la matrice siliciée. Ces matériaux hybrides ont trouvé des applications dans les domaines de la catalyse, de l'optique, de l'électronique etc. Ils peuvent être préparés par le procédé sol-gel à partir d'organosilanes contenant des fragments organiques à propriétés désirées. Pour former ces matériaux, il est essentiel de simplifier la préparation des organosilanes fonctionnels en réduisant le nombre d'étapes réactionnelles. Aussi, l'un des buts de cette thèse est de développer u
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30

Neto, Elias Paiva Ferreira. "Filmes híbridos fotocrômicos de Ormosil-fosfotungstato dopados com os cátions divalentes Zn2+, Mg2+, Ca2+, Sr2+e Ba2+." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-12092014-155541/.

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Neste trabalho, materiais fotocrômicos foram preparados pela imobilização de um heteropolioxometalato do tipo Keggin, fosfotungstato [PW12O40]3- (HPW) em uma matriz híbrida do tipo Ormosil (do inglês Organically Modified Silicates). Estudou-se o impacto da adição dos cátions divalentes Zn2+, Mg2+, Ca2+, Sr2+ e Ba2+ sobre as propriedades dos filmes de Ormosil-Fosfotungstato. Os materiais foram preparados pelo método sol-gel e depositados na forma de filmes em diferentes substratos pela técnica de dip-coating. A formação da rede híbrida de organosilicato e a presença do [PW12O40]3- com sua estru
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31

Venz, Paul Andrew. "Anion chemistry in the sol-gel processing of titania." Thesis, Queensland University of Technology, 1999.

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32

Anderson, Ruth. "A study of the atomic-scale structure of novel glass materials." Thesis, University of Kent, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267368.

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33

Clavel, Guylhaine. "Magnetic impurities in nanostructured materials." Doctoral thesis, Montpellier 2, 2009. http://www.theses.fr/2009MON20121.

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Doutoramento em Química<br>Os resultados apresentados aqui foram alcançados no âmbito do programa de doutoramento intitulado “Impurezas Magnéticas em Materiais Nanoestruturados”. O objectivo do estudo foi a síntese e caracterização de óxido contendo impurezas magnéticas. Durante este trabalho, sínteses de sol-gel não-aquoso têm sido desenvolvidos para a síntese de óxidos dopados com metais de transição (ZnO e ZrO2). A dopagem uniforme é particularmente importante no estudo de semicondutores magnéticos diluídos (DMSs) e o ponto principal deste estudo foi verificar o estado de oxidação e a est
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34

Passos, Aline Ribeiro [UNESP]. "Aluminas macro-mesoporosas produzidas pelo método sol-gel para aplicação em catálise heterogênea." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/136086.

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Made available in DSpace on 2016-03-07T19:21:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-07-22. Added 1 bitstream(s) on 2016-03-07T19:25:12Z : No. of bitstreams: 1 000854657_20160801.pdf: 1128231 bytes, checksum: 4302c5ac8b1cba0d5bf7783f5225e2e5 (MD5) Bitstreams deleted on 2016-08-01T11:30:03Z: 000854657_20160801.pdf,. Added 1 bitstream(s) on 2016-08-01T11:30:59Z : No. of bitstreams: 1 000854657.pdf: 7039373 bytes, checksum: e3e464e79dbd92c0c088c22c6648dea7 (MD5)<br>Alumina é um suporte importante em catálise heterogênea. O controle das propriedades física e texturais pode mel
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35

Passos, Aline Ribeiro. "Aluminas macro-mesoporosas produzidas pelo método sol-gel para aplicação em catálise heterogênea /." Araraquara, 2015. http://hdl.handle.net/11449/136086.

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Orientador: Celso Valentim Santilli<br>Orientador: Valérie Briois<br>Co-orientador: Leandro Martins<br>Banca: Pedro de Oliveira<br>Banca: Sylvain Cristol<br>Banca: Victor Luis dos Santos Teixeira da Silva<br>Banca: Douglas Gouvêa<br>Resumo: Alumina é um suporte importante em catálise heterogênea. O controle das propriedades física e texturais pode melhorar seu desempenho como suporte em aplicações de catálise. Os catalisadores de cobalto são conhecidos por apresentarem excelente performance na reação de reforma de etanol (ESR) devido a elevada capacidade de quebra das ligações C-H e C-C. Muito
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36

Weatherspoon, Michael Raymond. "Conformal sol-gel coatings on three-dimensional nanostructured templates." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/28157.

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Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Sandhage, Kenneth; Committee Member: Barefield, Kent; Committee Member: Bunz, Uwe; Committee Member: Carter, Brent; Committee Member: Tannenbaum, Rina.
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37

Freitas, Jefferson Arlen. "Sintese e caracterização de biossorventes a partir da imobilização da biomassa Sargassum sp em matrizes ceramicas pelo processo sol-gel." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266214.

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Orientador: Elias Basile Tambourgi<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-11T04:08:18Z (GMT). No. of bitstreams: 1 Freitas_JeffersonArlen_D.pdf: 3985383 bytes, checksum: 8a45be364ed2c151ea51fbb373ede3d6 (MD5) Previous issue date: 2007<br>Resumo: Este trabalho tratou da pesquisa e desenvolvimento de um adsorvente alternativo, aplicável no tratamento de rejeitos líquidos industriais, contendo baixas concentrações dos metais pesados Cd, Cu e Zn. Ele teve como objetivo geral produzir esferas adsorventes de z
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38

Wang, Jing. "Novel Carbon Nanotube Sol-Gel Composite for Sensing Applications." Digital Commons @ East Tennessee State University, 2006. https://dc.etsu.edu/etd/2241.

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Sol-Gel techniques depend on the hydrolysis and condensation reactions of organosilicon precursors in aqueous media and, thus, provide an inclusive environment with bioaffinity. On the other hand, carbon nanotubes (CNTs), which possess unique electric, thermal, mechanical, and chemical properties, including their high surface area:volume ratio, can be further surface-functionalized to address different material or sensing demands. In this work we describe a new composite material that combines the unique sol-gel network with conductive CNTs. Hydrolysis and subsequent condensation of tetramethy
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39

Walker, Jeremy D. "Exploring the Synthesis and Characterization of Nanoenergetic Materials from Sol-Gel Chemistry." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14573.

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Nanoenergetic composite materials have been synthesized by a sol-gel chemical process where the addition of a weak base molecule induces the gelation of a hydrated metal salt solution. A proposed proton scavenging mechanism, where a weak base molecule extracts a proton from the coordination sphere of the hydrated iron (III) complex in the gelation process to form iron (III) oxide/hydroxide, FeIIIxOyHz, has been confirmed for the weak base propylene oxide (PO), a 1,2 epoxide, as well as for the weak bases tetrahydrofuran (THF), a 1,4 epoxide, and pyridine, a heterocyclic nitrogen-containing co
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40

Chaumel, Frederic. "A new synthetic route to sol-gel materials containing nonlinear optical chromophores /." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31207.

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Network formation using chlorotris(diethylamino)silane [ClSi(NEt 2)3], tetrakis(dimethylamino)silane [Si(NMe2) 4], and tetrakis(diethylamino)tin [Sn(NEt2)4], and NLO-active chromophore was investigated to yield inorganic-organic hybrid materials for 2nd-order nonlinear optics. In contrast to hybrids obtained from Si(NEt2)4, those prepared from ClSi(NEt 2)3 and Sn(NEt2)4 were insoluble even in high boiling solvents. Facile hydrolysis of the NLO-active dye was found to occur in these hybrids due to the catalysis of HCl and the high reactivity for ClSi(NEt2)3 and Sn(NEt2)4 respectively. Due to th
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41

Hant, Steven Michael. "Characterization and fabrication of nanoporous materials by template-directed sol-gel methods." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/64302/.

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This research project focussed on developing synthetic strategies to fabricate a variety of nanoporous materials ranging the full range of pore sizes from micro to macro using template assisted sol-gel routes. Both colloidal crystals and surfactant self assemblies were employed as templates. Initial studies focussed on the fabrication of macroporous titano/alumino and tinsilicate materials by dip infiltrating colloidal crystal templates with sol-gel mixtures. The sols were prehydrolysed in order to ensure atomic scale homogeneity of the final material. These materials were subsequently charact
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42

Huang, Xiaoguang. "Luminescent Lanthanide Hybrid Sol-gel Materials with Potential Applications in Electronic Devices." Palaiseau, Ecole polytechnique, 2015. http://www.theses.fr/2015EPXX0011.

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43

Wiper, Paul Vincent. "Novel sol-gel materials for advanced glass products : structure, dynamics and stability." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/7993/.

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Flame retardants are composite materials or chemicals used in thermoplastics, thermosets, textiles, coatings and glasses that inhibit or resist the spread of fire. In 2014 the global market for flame retardants is expected to reach $6.10 billion with a drive in research for designing and developing new fire resistant materials. A commercially available product based on a hydrogel/glass composite is an effective fire and heat resistant glazing that is employed in the commercial and domestic sector. The macroscopic effects of these materials have been investigated; however no information exists
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44

Nguyen, Thoi Dang. "Design and operation of nanovalves constructed from supramolecules and sol-gel materials." Diss., Restricted to subscribing institutions, 2006. http://proquest.umi.com/pqdweb?did=1276397761&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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45

Kustra, Joanna. "Elaboration of micro and mesostructured sol-gel materials using polysilsesquioxane molecular precursors." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1081/document.

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Le projet de thèse a pour but de synthétiser de nouveaux matériaux siliciques à microstructure contrôlée en utilisant des procédés de polycondensation à basse température, et de développer de nouvelles approches de microfabrication 3D à haute résolution par excitation bi-photonique d’une formulation sol-gel. La synthèse de matériaux microstructurés est ici centrée sur le procédé sol-gel, impliquant des réactions d’hydrolyse-polycondensation. Les mtériaux les plus étudiés par ces approches en particulier dans le cadre d’un contrôle de la porosité sont préparés à partir de tetraéthoxide de silic
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46

DeRose, Christopher Todd. "Electro-Optic Polymers: Materials and Devices." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/195650.

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Electro-optic (EO) polymers are an attractive alternative to inorganic nonlinear materials. EO polymers with a Pockel's coefficient, r33, greater than 320 pm/V have been recently demonstrated. In addition to their high EO activity, EO polymers have the additional benefit that their dielectric constants at optical and millimeter wave frequencies are closely matched which allow for bandwidths which are limited only by the resistive losses of traveling wave electrodes. The amorphous nature of the host polymer makes heterogeneous integration of the materials on any substrate possible. The dev
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47

Yang, Xiangxin. "Sol-gel synthesized nanomaterials for environmental applications." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/884.

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48

Clavel, Guylhaine. "Magnetic impurities in nanostructured materials." Doctoral thesis, Universidade de Aveiro, 2009. http://hdl.handle.net/10773/3210.

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Doutoramento em Química<br>Os resultados apresentados aqui foram alcançados no âmbito do programa de doutoramento intitulado “Impurezas Magnéticas em Materiais Nanoestruturados”. O objectivo do estudo foi a síntese e caracterização de óxido contendo impurezas magnéticas. Durante este trabalho, sínteses de sol-gel não-aquoso têm sido desenvolvidos para a síntese de óxidos dopados com metais de transição (ZnO e ZrO2). A dopagem uniforme é particularmente importante no estudo de semicondutores magnéticos diluídos (DMSs) e o ponto principal deste estudo foi verificar o estado de oxidação e a est
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49

Mehdi, Beata Layla. "FABRICATION OF SOL-GEL FILMS BASED ON ELECTROCHEMICALLY ASSISTED DEPOSITION PROCESSING." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1367543075.

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50

Ellis, Michael Martin. "Formation of pure polycrystalline alpha-alumina fibers from an organo-metallic sol-gel." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/20010.

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