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Dissertations / Theses on the topic 'Material Characterization'

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1

Nettles, Charles B. "Material characterization using spectrofluorometers." Thesis, Mississippi State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10196341.

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<p> The use of spectrofluorometers to examine nanomaterials is quite popular using either fluorescence or synchronous measurements. However, understanding how a material&rsquo;s optical properties can influence spectral acquisition are of great importance to accurately characterize nanomaterials. This dissertation presents a series of computational and experimental studies aimed at enhancing the quantitative understanding of nanoparticle interactions with matter and photons. This allows for more reliable spectrofluorometer based acquisition of nanoparticle containing solutions. </p><p> Cha
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2

V, Venkataramanan. "Material characterization in elongational flows /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487943610784079.

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3

Maess, Johannes Thomas. "Attenuation models for material characterization." Thesis, Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-10252004-031615/unrestricted/maess%5Fjohannes%5Ft%5F200412%5Fmast.pdf.

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Thesis (M.S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2005.<br>Laurence J. Jacobs, Committee Chair ; Reginald DesRoches, Committee Member ; Jianmin Qu, Committee Member. Includes bibliographical references.
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4

Maess, Matthias. "Material characterization using nonlinear wave propagation." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/19311.

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5

Chiu, Pit Ho Patrio 1977. "Material characterization of InGaAsInP PIN photodetectors." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29533.

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InGaAs/InP PIN photodetectors have been fabricated in the laboratory. Several material characterization techniques are performed to characterize the material. They include current-voltage (I-V) measurements, capacitance-voltage (C-V) measurements, electron beam induce current (EBIC) measurements and deep level transient spectroscopy (DLTS) measurements. It is found that sample V1 and V1B have a higher n- region doping concentration then that of sample V2A. The measurements also indicate that the recombination currents in the devices are small. Depletion width of one of the photodetector in sam
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6

Hunt, Cassandra R. "Baffle material characterization for Advanced LIGO." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44820.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.<br>Includes bibliographical references (p. 43-45).<br>The transition to Advanced LIGO introduces new sensitivity requirements for the LIGO interferometers. When light scatters away from the main laser beam, then scatters off the beam tube and returns to the main beam, noise is introduced into the phase of the laser. The Auxiliary Optics Support subsystem uses baffles and beam dumps to control this scatter, but the baffle material and shape contribute some scatter as well. Careful selection of baffle material for Adva
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7

Webster, Matthew R. "Material Characterization of Insect Tracheal Tubes." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/71708.

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The insect respiratory system serves as a model for both robust microfluidic transport and mate- rial design. In the system, the convective flow of gas is driven through local deformations of the tracheal network, a phenomenon that is dependent on the unique structure and material properties of the tracheal tissue. To understand the underlying mechanics of this method of gas transport, we studied the microstructure and material properties of the primary thoracic tracheal tubes of the American cockroach (Periplaneta americana). We performed quasi-static uniaxial tests on the tissue which reveal
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8

Michael, Christopher Paul Painter Oskar J. Painter Oskar J. "Optical material characterization using microdisk cavities /." Diss., Pasadena, Calif. : Caltech, 2009. http://resolver.caltech.edu/CaltechETD:etd-05282009-103510.

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9

Cappelletto, Elisa. "Characterization of material for civil engineering." Doctoral thesis, Università degli studi di Trento, 2014. https://hdl.handle.net/11572/367727.

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Materials are the heart of engineering, which can be defined as the creative and rational use of materials for practical purposes. Materials have had an essential role in the development of civil engineering: from the beginning of human evolution, man has used many different materials to build houses, bridges, roads and countless other structures to make his life easier. Ancient populations used the raw materials at their disposal, such as stone, clay and timber. Over the centuries, the search for new materials became increasingly important to respond to changing human needs, and men learned h
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Cappelletto, Elisa. "Characterization of material for civil engineering." Doctoral thesis, University of Trento, 2014. http://eprints-phd.biblio.unitn.it/1226/1/PhD_Thesis_Characterization_of_Materials_Elisa_Cappelletto_.pdf.

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Materials are the heart of engineering, which can be defined as the creative and rational use of materials for practical purposes. Materials have had an essential role in the development of civil engineering: from the beginning of human evolution, man has used many different materials to build houses, bridges, roads and countless other structures to make his life easier. Ancient populations used the raw materials at their disposal, such as stone, clay and timber. Over the centuries, the search for new materials became increasingly important to respond to changing human needs, and men learned h
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11

Shang, Shen. "Stochastic Material Characterization of Heterogeneous Media with Randomly Distributed Material Properties." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1352579058.

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12

Koseoglu, Devrim. "Material Characterization With Terahertz Time-domain Spectroscopy." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611648/index.pdf.

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Terahertz time-domain spectroscopy systems were developed and used for the anaylsis and characterization of various materials. By using ultra-fast Ti:Sapphire and Er-doped fiber lasers, terahertz time-domain spectrometers of different configurations were constructed and tested. To increase the accuracy and sensitivity of the measurements, the systems were optimized for spectroscopic analysis. MBE grown nominally undoped epitaxial GaAs samples were used for the spectroscopic measurements. These samples were first charactrized by electrical measurements in order to check the accuracy of the tera
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13

Mfoumou, Etienne Marcelin. "Remote acoustic material characterization of thin sheets /." Karlskrona : School of Engineering, Blekinge Institute of Technology, 2006. http://www.bth.se/fou/Forskinfo.nsf/allfirst2/9a00c3f4524e1bcbc125729000366e4c?OpenDocument.

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14

Lin, Lianshan. "Characterization of material properties using inverse method." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505378.

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The inverse analysis introduced in this dissertation involves detennining an object's properties. In engineering problems, the most important object properties are material or constitutive constants (elastic/plastic). In direct problems, engineers can conveniently look up for the material constants in standard materials handbooks, and use them to pred'ict the structure's responses under the given loads. However, in the cases where the material constants are not available from standard handbooks, or the material properties need to be detennined precisely since a small difference from those list
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15

Cortes, Morales Myrna Carolina. "Characterization of cross-country ski base material." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-85856.

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Cross-country skiing has developed to become one of the most competitive winter sports, where a skier can win by fractions of seconds. Joint efforts between ski technicians and scientist have allowed the development of methodologies to prepare the ski surface, yet much of the knowledge up to date is based on the experience of the technicians.  In this sense, much attention is focused on the ski base, given that the friction at the base is an important factor that will define how fast a ski can glide. Ski base preparation is an extensive procedure, due to the several parameters that have to be
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Julian, Michael Robert. "Material characterization of viscoelastic polymeric molding compounds." Connect to resource, 1994. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1137616726.

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Thesis (M.S.)--Ohio State University, 1994.<br>Advisors: Vernal H. Kenner and Carl H. Popelar, Dept. of Engineering Mechanics. Includes bibliographical references (leaf 106). Available online via OhioLINK's ETD Center
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17

Awal, Mohammad Abdul. "Low frequency acoustic microscopy for material characterization." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/187081.

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In recent years, acoustic microscopy has been found to be very useful for characterizing engineering as well as biological materials. With the present state of knowledge on acoustic microscopy, one can obtain the surface wave velocity of a homogeneous specimen or coating thickness of a coated material and can produce images of near surface internal defects and inhomogeneities in a specimen. Low frequency (≤ 1 MHz) acoustic microscopy has been found to be very effective for detecting cracks at a relatively greater depth. An unconventional low frequency acoustic microscope has been fabricated wh
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18

Athale, Madhura Athale. "Elastodynamic Characterization of Material Interfaces Using Spring Models." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503262542890538.

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19

Rosqvist, Emil, and Theodore Vassi. "Characterization of phases in Argon Oxygen Decarburization slag." Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298409.

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Slag is an important part of steelmaking with the AOD (Argon Oxygen Decarburization) process. In this work the focus was on developing a methodology for characterizing phases in slagsamples obtained after decarburization, reduction and desulphurization. Six samples from two heats, or batches, (heat A and B) were prepared by baking in Bakelite and polishing. These were analysed in SEM (Scanning Electron Microscope), with BSE (Backscattered Electrons) and EDS (Energy Dispersive XraySpectroscopy). Images from BSE were then processed inImageJ with a denoise method for advanced fraction analysis. A
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20

Berglund, Anders. "Characterization of factors interacting in CGI machining : machinability - material microstructure - material physical properties." Licentiate thesis, KTH, Production Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9258.

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<p>The Swedish truck industry is forced to find new material solutions to achieve lighter engines with increased strength. Customers and new environmental regulations demand both higher specific power and more environmentally friendly trucks, and this places a rising pressure on the manufactures. This demand could be met by increasing the peak pressure in the cylinders. Consequently, a more efficient combustion is obtained and the exhaust lowered. This however exposes the engine to higher loads and material physical properties must therefore be enhanced.</p><p>Today, alloyed gray iron is the p
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21

Berglung, Anders. "Characterization of factors interacting in CGI machining : machinability - material microstructure - material physical properties /." Stockholm : Industriell teknik och management, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9258.

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22

Han, Kyuhwan. "Magneto-dielectric material characterization and RF antenna design." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53863.

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A novel material characterization method for magneto-dielectric composite material was proposed. MD materials have been reported as providing new opportunities for effective antenna size reduction in many studies. Since MD materials have to be realized through material synthesis, an accurate measurement method is required to extract them. The proposed method, cavity perturbation technique using substrate integrated waveguide cavity resonator, has been demonstrated through theories, simulations and measurement that it can be used to extract both electric and magnetic properties of the MD compos
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23

Sha, Hao. "Material Synthesis and Characterization on Low-Dimensional Cobaltates." FIU Digital Commons, 2010. http://digitalcommons.fiu.edu/etd/248.

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In this thesis, results of the investigation of a new low-dimensional cobaltates Ba2-xSrxCoO4 are presented. The synthesis of both polycrystalline and single crystalline compounds using the methods of conventional solid state chemical reaction and floating-zone optical furnace is first introduced. Besides making polycrystalline powders, we successfully, for the first time, synthesized large single crystals of Ba2CoO4. Single crystals were also obtained for Sr doped Ba2-xSrxCoO4. Powder and single crystal x-ray diffraction results indicate that pure Ba2CoO4 has a monoclinic structure at room te
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24

Khan, Anastassiya. "Synthesis and characterization of defective PBAs electrode material." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21015/.

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Sodium manganese hexacyanoferrate (NaMnHCF) and its derivatives have been synthesized by simple co-precipitation method with addition of the citric and ascorbic acids respectively. The correspondent crystal structure, water content, chemical formula and a deep structural investigation of prepared samples have been performed by means of the combination of the laboratory and synchrotron techniques (PXRD, FT-IR, TGA, MP-AES and XAS). Electrochemical tests have been done using three-electrode system in sodium nitrate solution at different concentration. From cyclic voltammetry curves, Fe3+/2+ redo
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25

Snider, James M. "Zinc pot bearing material wear and corrosion characterization." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=3716.

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Thesis (Ph. D.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains xx, 272 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 207-208).
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26

Tam, Chung Ming. "Use of liquid chromatography in membrane material characterization." Thesis, University of Ottawa (Canada), 1989. http://hdl.handle.net/10393/5701.

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27

Noriega, Motta Julio Amilcar. "Portable transparent indenter instrumentation for material surface characterization." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4765.

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Thesis (Ph. D.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains xiii, 105 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 97-98).
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28

Anderson, Mélissa. "Tube hydroforming of aerospace alloys : material characterization methods." Mémoire, École de technologie supérieure, 2010. http://espace.etsmtl.ca/625/1/ANDERSON_M%C3%A9lissa.pdf.

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L'objectif du projet est de développer des outils de modélisation de procédé pour la fabrication virtuelle de composants aéronautiques par hydroformage de tubes. L'industrie aérospatiale s'intéresse aux possibilités qu'offre la technologie d'hydroformage pour la fabrication de pièces aéronautiques. Dans ce contexte, les travaux menés portent sur la mise en place de méthodes appropriées pour caractériser certains alliages aéronautiques: les aciers inoxydables 321, 17-4 PH ainsi que le superalliage base-nickel Inconel 718. Le présent travail cherche à comprendre le comportement mécanique d
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ALICKE, ALEXANDRA ARAUJO. "LAOS RHEOLOGICAL CHARACTERIZATION OF AN ELASTO-VISCOPLASTIC MATERIAL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=23828@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>O escoamento cisalhante oscilatório de grande amplitude (large amplitude oscillatory shear - LAOS) é considerado atualmente uma das metodologias mais promissoras para caracterização de materiais complexos. Como uma grande faixa de processos industriais envolve grandes deformações é de extrema importância entender como esses materiais se comportam mecanicamente sob essas circunstâncias para o correto projeto e operação. Através de uma caracterização reológica completa de um mat
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30

Knauss, Daniel M. "Synthesis and characterization of new polycarbonate material systems." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/40208.

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Bisphenol A polycarbonate is an engineering thermosplastic which can be utilized for a variety of applications. Modifications to improve upon the properties of this useful material have been attempted since its invention. Three modifications of bisphenol A polycarbonate and its copolymers have been examined in this work. The hydrolytic stability of copolymers of polydimethylsiloxane and polycarbonate was improved by the synthesis of pre-formed phenol functional polydimethylsiloxane oligomers in which the Si is attached directly to the aromatic ring of the hydroxyaryl functional component. <i>
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Lee, Genevieve W. "Advanced Characterization of Solid-State Dissimilar Material Joints." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492794418438023.

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32

Dalai, Biswajit. "Material characterization of AA7075-T651 deformed at different temperatures and strain rates." Licentiate thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84325.

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In this licentiate thesis, the mechanical response and the microstructure evolution in aluminum alloy (AA) 7075 in its T651 heat treated state have been studied through mechanical tests at varied conditions of strain rate and temperature. First, compression tests were performed on AA7075-T651 samples at room temperature (RT), 100, 200, 300, 400 and 500 °C (melting temperature of AA7075 is ~635 °C) with two comparatively low strain rates of 0.01 and 1 s-1 using a Gleeble thermo-mechanical simulator. The effects of softening mechanisms, such as adiabatic heating, dynamic recovery (DRV) and dynam
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33

Leutz, Daniel Maurice [Verfasser]. "Forming simulation of AFP material layups: Material characterization, simulation and validation / Daniel Maurice Leutz." München : Verlag Dr. Hut, 2016. http://d-nb.info/1115550438/34.

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34

Jonzon, Andreas. "Characterization of High-silicon alloy ductile iron in very thick sections." Thesis, Luleå tekniska universitet, Mineralteknik och metallurgi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79194.

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Valmet AB has ha foundry located I Karlstad, Sweden. The foundry has specialized in large components in ductile and gray iron. This report is a part of an evaluation of a new alloy that Valmet has produced. The alloy is called S550 where 550 is the expected tensile strength in a cast on sample. S550 is a ferritic ductile alloy with 4,15-4,25% silicone. In this experiment the alloy is casted in very large sections to better match the intended final product. The purpose of the report is to promote a better understanding of how silicon works in large castings. Ultimate tensile strength, yield str
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35

McKeogh, Brendan James. "Chemical Changes in Hydrothermal Carbon with Reaction Time." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-theses/1029.

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"The increasing global demands for materials and energy directly contributes to the devastating ecological, toxicological, and climate consequences currently observed. Biomass-derived energy and materials offers a sustainable option to meeting current needs and developing novel materials. Hydrothermal carbonization is a promising green platform to valorize biomass by forming Hydrochar, a carbon solid. Hydrothermal carbonization converts biomass using liquid phase water at elevated temperatures (180-350 °C), forming organic intermediates, which dehydrate and polymerize to form the solid materia
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Khan, Abdullah. "Synthesis and characterization of nano-structured CoSb3 thermoelectric material." Thesis, KTH, Materialvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10810.

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In this project, nano powder of CoSb3 thermoelectric material was synthesized using chemical alloying novel co-precipitation method. This method involved co-precipitation of TE precursor compounds in controlled pH aqueous solutions followed by thermo-chemical treatments including calcination and reduction to produce nano-particulates of CoSb3. The nano powder was consolidated using rapid solid state spark plasma sintering (SPS) and the processing time was of the order of few minutes. On a result very high densities were achieved and grain growth was almost negligible. Various batches of the Co
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Huyse, Luc. "Micromechanically-based random field characterization of structural material properties." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0022/NQ49504.pdf.

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Walker, Paul Michael. "A test material for tissue characterization in N.M.R. imaging." Thesis, Imperial College London, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338275.

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Dixon, Larie Alecia Brandy. "Material characterization of lithium ion batteries for crash safety." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100106.

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Thesis: Nav. E., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 113-114).<br>The safety of lithium-ion batteries is extremely important due to their widespread use in consumer products such as laptops and cell phones. Several cases of thermal runaway in lithium ion batteries that resulted in fires have been reported recently. And in the case of vehicle batteries, deformation
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Padilla, Eduardo A. "Characterization of fissile material using low energy neutron interrogation." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/41299.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2007.<br>Includes bibliographical references (p. 76).<br>The glaring need to develop methods for detecting and interdicting illicit nuclear trafficking has resulted in the exploration of various methods for active neutron interrogation, specifically for the presence of special nuclear material (SNM) in cargo containers. The proposed system aims to defeat the ability of terrorists to import SNM into the United States via maritime shipping, thus greatly reducing the possibility of a successful nuclear
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Nsengiyumva, Schadrack. "Formation and characterization of pulsed laser ablated magnetoresistive material." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52852.

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Thesis (MSc)--Stellenbosch University, 2002.<br>ENGLISH ABSTRACT: In this investigation the formation of thin film manganites and their electrical characteristics is studied. In order to see the effect of oxidation states on magneto-resistivity, 80% of Mn is replaced by Fe. Pulsed laser deposition (3 J/cm2), carried out in oxygen partial pressures ranging from 0.01 mbar to 1.00 mbar was used to fabricate the thin films from two target compositions, namely La2CaMn2.94Feo.0609 and La2CaMno.6Fe2.409. Films were deposited on Si< 100 >, MgO< 100 >, SrTi03< 100 > and LaAl03< 100 > single cryst
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Gupta, Mridula. "Characterization of Microbial Contaminants Associated with Floor Material Types." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483636606986462.

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Parulkar, Aamena. "Developing Synthesis and Characterization Methods for Enhancing Material Performance." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1542739064703435.

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44

Hemmasizadeh, Ali. "Characterization of Heterogeneous Material Properties of Aorta Using Nanoindentation." Diss., Temple University Libraries, 2013. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/240046.

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Mechanical Engineering<br>Ph.D.<br>Arterial mechanical properties have received increasing attention in the past few decades due to their vast effect on predicting cardiovascular diseases and injuries. The heterogeneity of thoracic aortic tissue was characterized in terms of viscoelastic material properties and correlations were obtained between these properties and tissue morphology. Additionally, the effect of material preservation on the material properties was determined. Changes in the mechanical properties of porcine thoracic aorta wall in the radial direction were characterized using a
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45

Rigoni, Isotta. "FE-Modelling and Material Characterization of Ice-Hockey Helmet." Thesis, KTH, Skolan för teknik och hälsa (STH), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209193.

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The aim of this research was to produce a reliable finite element model of a helmet, that could be used to simulate approval tests as well as impacts to investigate the safety offered. A 2D and 3D mesh was generated from the CAD file of an Easton Synergy 380 with HyperWorks, and then checked referring to standard parameter values. A few specimens cut from the liner were tested with the Instron Electropuls E3000 (Instron, High Wycombe, Great Britain) machine to determine Young’s modulus, Poisson’s ratio and the density of the EPP. The numerical model was characterised with appropriate materials
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46

Singh, Bhupinder. "Advanced Data Analysis Tools and Multi-Instrument Material Characterization." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/6168.

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My dissertation focuses on (i) the development of new analysis tools and methodologies for analyzing X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) data, and (ii) the comprehensive characterization of materials (nanodiamonds) using a multi-instrument approach. Chapter 1 contains (i) a discussion of the two techniques I focused on most in my work: XPS and ToF-SIMS, (ii) a discussion of the common chemometrics techniques used to analyze data from these methods, and (iii) the advantages/rationale behind the multi-instrument characterization of
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47

Andreoli, Sara <1989&gt. "Synthesis and Characterization of Mesoporous Material for Catalyitic Applications." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/8027/1/Andreoli_Sara_tesi.pdf.

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This PhD project dealt with different topics mainly linked together by fluorinated compounds. The work started from the preparation and characterization of mesoporous materials as support for catalysts for the production of fluorinated monomers of industrial interest. From these monomers, fluorinated polymers are obtained through industrial processes, with all their interesting properties, due to the presence of fluorine, such as thermal and chemical stability, flame resistance. This particular family of polymer find many applications, but their use as catalyst in gas-phase reactions is still
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48

Malerba, Claudia. "Cu2ZnSnS4 thin films solar cells: material and device characterization." Doctoral thesis, Università degli studi di Trento, 2014. https://hdl.handle.net/11572/368186.

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Abstract:
Cu2ZnSnS4 (CZTS) quaternary compound has attracted much attention in the last years as new abundant, low cost and non-toxic material, with desirable properties for thin film photovoltaic (PV) applications. In this work, CZTS thin films were grown using two different processes, based on vacuum deposition of precursors, followed by a heat treatment in sulphur atmosphere. The precursors were deposited using two different approaches: (i) electron-beam evaporation of multiple stacks made of ZnS, Sn and Cu and (ii) co-sputtering deposition of the three binary sulphides CuS, SnS and ZnS. All the mate
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49

Malerba, Claudia. "Cu2ZnSnS4 thin films solar cells: material and device characterization." Doctoral thesis, University of Trento, 2014. http://eprints-phd.biblio.unitn.it/1307/1/PhDThesis_C.Malerba.pdf.

Full text
Abstract:
Cu2ZnSnS4 (CZTS) quaternary compound has attracted much attention in the last years as new abundant, low cost and non-toxic material, with desirable properties for thin film photovoltaic (PV) applications. In this work, CZTS thin films were grown using two different processes, based on vacuum deposition of precursors, followed by a heat treatment in sulphur atmosphere. The precursors were deposited using two different approaches: (i) electron-beam evaporation of multiple stacks made of ZnS, Sn and Cu and (ii) co-sputtering deposition of the three binary sulphides CuS, SnS and ZnS. All the mate
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50

ZHANG, XINGHANG. "SYNTHESIS AND CHARACTERIZATION OF NANOCRYSTALLINE Zn." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20011030-161617.

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Abstract:
<p>The goals of this thesis were to synthesize nanocrystalline Zn, to study the mechanical properties of bulk nanocrystalline Zn and try to reveal the deformation mechanisms in nanocrystalline materials. Nanocrystalline Zn powder has been synthesized by a cryomilling method. The average grain size decreased exponentially with the cryomilling time and reached a minimum average grain size of around 17nm. Large numbers of small grains (2~6nm) have been found in the very early stages of cryomilling. Dynamic recrystallization (DRX) was used to explain the observed phenomena. Differential scanning c
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