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1

O'Neil, David H. "Materials chemistry and physics of the transparent conducting oxides." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670028.

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2

Peters, Kyle C. "Sustainable Materials and Processes for Optoelectronic Applications." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1554397264722736.

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3

Norga, Gerd Johan Maria. "Chemistry and physics of metallic contaminants on crystalline silicon surfaces." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10904.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.<br>Includes bibliographical references (leaves 202-210).<br>by Gerd Johan Maria Norga.<br>Sc.D.
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4

Kiang, Ching-Hwa Goddard William A. Goddard William A. "Physics and chemistry of advanced nanoscale materials : experiment, simulation, and theory /." Diss., Pasadena, Calif. : California Institute of Technology, 1995. http://resolver.caltech.edu/CaltechETD:etd-10162007-105256.

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5

Forsythe, Martin Blood Zwirner. "Advances in Ab Initio Modeling of the Many-Body Effects of Dispersion Interactions in Functional Organic Materials." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:26718708.

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Accurate treatment of the long-range electron correlation energy, including dispersion interactions, is essential for describing the structure, dynamics, and function of a wide variety of systems. Among the most accurate models for including dispersion into density functional theory (DFT) is the range-separated many-body dispersion (MBD) method [A. Ambrosetti et al., J. Chem. Phys. 2014, 140, 18A508], in which the long-range correlation energy is computed from a model system of coupled quantum harmonic oscillators. In this work, we seek to extend the applicability of the MBD model by developi
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6

Citati, Andrea. "Systematic synthesis and magnetic characterization of palladium nanoparticles with hexanethiolate and phenylethanethiolate ligands." Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10159001.

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<p> Palladium nanoparticles have been synthesized using a systematic variation of the two-phase Burst-Schiffrin reaction to specifically tailor their physical properties. Furthermore, hexanethiolate and phenylethanethiolate ligands have been added to kinetically stabilize the nanoparticles and as a consequence the magnetic properties have been altered due the change in ligand-nanoparticle exchange interaction. The magnetic properties of the nanoparticles were then studied via the vibrating sample magnetometer and subsequently compared with similar experiments in the nanomagnetism literature.
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7

Shaheen, Sean E. "Device physics of organic light-emitting diodes." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/289012.

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This work investigated several aspects of OLED device physics. The mechanisms responsible for the efficiency enhancement typically seen when a dye molecule is doped into the emission layer were examined. By comparing the spectra and efficiencies of single-layer devices for varying dopant concentrations, it was found that both charge transfer and energy transfer from the host molecule to the dye dopant are important processes. The measured efficiencies for photoluminescence and electroluminescence were found to be consistent with a simple model developed to explain the functional dependence on
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8

Playford, Helen Y. "Investigating materials with disordered structures using total neutron scattering." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/55164/.

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The structures of a variety of disordered materials were determined using the technique of total neutron scattering. The synthesis of various polymorphs of Ga2O3 and related materials was investigated and the structures of the hitherto uncharacterised polymorphs were examined in detail. The structure of y-Ga2O3 was found to be a cubic defect spinel with four partially occupied Ga sites, however, the octahedral Ga coordination environments were found to be distorted from the average cubic structure. The cation distribution in y-Ga2O3 was found to depend on particle size and synthesis method. Ex
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9

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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10

Zhang, Wenbin. "Soft Fullerene Materials: Click Chemistry and Supramolecular Assemblies." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1272303673.

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11

Szabo, Tamas. "Energy transfer at gas-liquid interface towards energetic materials /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4797.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on February 29, 2008) Vita. Includes bibliographical references.
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12

Hodges, Joshua. "In Situ Measurements of Electron-Beam-Induced Surface Voltage of Highly Resistive Materials." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1416.

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This study presents the development, calibration, characterization, and use of new instrumentation for in situ measurements of electron-beam-induced surface voltage. The instrument capabilities allow for measurements of a full range of insulating materials that are of concern to NASA spacecraft charging experts. These measurements are made using moveable capacitive sensor electrodes that can be swept across the sample using an in vacu stepper motor. Testing has shown a voltage range of more than ±30 kV with a low-voltage resolution of 0.2 V. The movable sensors allow for a radial measurement o
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13

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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14

Jiang, Hongwei 1962. "Functionalized siloxane based polymers and network materials for second-order nonlinear optics." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35842.

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We have developed a new chemical methodology, based on simple acid-base hydrolysis of aminosilanes with molecules containing terminal OH groups, to prepare robust siloxane based polymers and organic-inorganic hybrid network materials for second-order nonlinear optics. First, a variety of polymers containing NLO-active chromophores covalently bound to the siloxane backbones, [-R2Si-(O-SiR2)n-O-(NLO-Chromophore)-O-] n (R = CH3 or CH3/C6H4) and [-R2Si-(O-SiR2)n-O-R'-O-(NLO-Chromophore)-O-] n. (R' = -C6H4-C 6H4-C6H4-), were prepared. Their solubility in common organic solvents, and high thermal st
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15

Courtney, Ian Anthony. "The physics and chemistry of metal oxide composites as anode materials for lithium-ion batteries." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0021/NQ49253.pdf.

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16

Mishchenko, Lidiya. "Biomimetic Engineering of Patterned Surfaces to Control Crystallization: From Colloids to Ice." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10132.

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Numerous natural organisms use chemical and structural patterning to manipulate complex crystal growth and control their aqueous environment. Structural templates such as vesicles and cell walls aid in the growth of nano- and micro-patterned single crystal structures seen in sea urchins, brittlestars, and sea cucumbers. Patterned surface chemistry is used by the Namib dessert beetle for water collection and by the lotus leaf to fend off raindrops. Taking inspiration from natural organisms, structural and chemical patterning is used to achieve extended functionality and better control over the
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17

Kress, Oliver Herbert. "Mechanical Tension and Electrical Conductivity of Liquid Crystal Filaments." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1437752455.

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18

Sim, Alec. "Unified model of charge transport in insulating polymeric materials." Thesis, Utah State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3606878.

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<p> Presented here is a detailed study of electron transport in highly disordered insulating materials (HDIM). Since HDIMs do not lend themselves to a lattice construct, the question arises: How can we describe their electron transport behavior in a consistent theoretical framework? In this work, a large group of experiments, theories, and physical models are coalesced into a single formalism to better address this difficult question. We find that a simple set of macroscopic transport equations--cast in a new formalism--provides an excellent framework in which to consider a wide array of exp
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19

Romero, Trevor Walton. "Quantum diamonds : a discussion of the chemistry, materials science, physics and applications of ternary (Cu-In-S) nanocrystals." Thesis, Massachusetts Institute of Technology, 2018. https://hdl.handle.net/1721.1/121608.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 33-34).<br>Quantum dots (QDs) are nanometer-sized crystallites of inorganic semiconductors with tunable optoelectronic properties, which has led to a variety of real-world applications beginning in the 1980s, ranging including electronic displays, solar cells, and quantum computers [(Lee, SID), (Tang, Nature Mater.), (Puri, Phys Rev. B)]. However, most high-quality QD materials explored to date have bee
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20

Page, Samuel John. "The use of solid state NMR to monitor reactions and doping in inorganic materials." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/113823/.

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Solid state nuclear magnetic resonance (NMR) is a powerful probe of inorganic materials systems. Through carefully changing materials compositions and synthesis methods, the impact on the local structure can be investigated. These have been applied to three main materials sectors: Paramagnetic materials in NMR have traditionally suffered from poor resolution due to broadening experienced at the nuclei from localised unpaired electrons. In this work, a fast magic angle spinning (MAS) and low field approach has been applied to these paramagnetic cathode materials to improve this resolution, and el
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21

Gunasinghe, Rosi. "Electronic and Magnetic Properties of Carbon-based and Boron-based Nano Materials." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2017. http://digitalcommons.auctr.edu/cauetds/64.

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The structural and electronic properties of covalently and non-covalently functionalized graphene are investigated by means of first-principles density-functional-theory. The electronic characteristics of non-covalently functionalized graphene by a planar covalent organic framework (COF) are investigated. The aromatic central molecule of the COF acts as an electron donor while the linker of the COF acts as an electron acceptor. The concerted interaction of donor acceptor promotes the formation of planar COF networks on graphene. The distinctive electronic properties of covalently functionalize
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22

Venkataraman, Nithya Leela. "Photosensitive Cholesteric Liquid Crystal Materials." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1248110797.

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23

Hooper, Thomas J. N. "Solid state nuclear magnetic resonance on quadrupolar nuclei in disordered catalysis based materials." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/101212/.

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The behaviour of a catalyst is intrinsically linked to its structure and, therefore, accurate structural refinements are desired to tune their overall function. Higher functional demands on catalysts systems, require more complex disordered materials which are inherently difficult to characterise with conventional analytical techniques. Solid state NMR is an excellent probe of local order and, hence, is utilised in this thesis for the structural determination of several catalytic related materials. The first direct105 Pd solid state NMR measurements of diamagnetic (K2PdCl6, (NH4)2PdCl6 and K2P
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24

Naden, Aaron Benjamin. "Resolving structure-function relations in advanced materials by scanning probe and electron microscopies." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6857/.

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Understanding the links between structural and functional properties is at the heart of materials science and underpins the development of technologically relevant materials. The work presented in this thesis is primarily concerned with development of these links in two distinct material classes by scanning probe and electron microscopies. After a brief overview of the background and instrumentation (Chapters 1 and 2), Chapter 3 concerns the development of structure-function relations in bottom gate, bottom contact organic transistors employing an active layer comprising a blend of diF-TES-ADT
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25

Fletcher, Aaron Thomas. "A Study of Alkali-Resistant Materials for Use in Atomic Physics Based Systems." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1506342433540236.

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26

Manyam, Jedsada. "Novel resist materials for next generation lithography." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/1333/.

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Fullerene derivatives have been demonstrated as negative-tone resists for electron beam lithography with impressive capability for high resolution and high plasma etching resistance, due to their carbon-rich nature. Their primary drawback of extremely poor sensitivity has been addressed by implementation of chemical amplification. A three-component chemically amplified negative-tone resist has been developed via the addition of a photoacid generator and a crosslinker to a fullerene derivative. This thesis work presents a significant extension of the previous work. The resists have undergone co
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27

Ekstrand, Paul Daniel. "Magnetic relaxation in iron phthalocyanine thin films." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1604875.

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<p> Magnetic relaxation describes the process by which a magnetic system prepared in a non-equilibrium state returns to an equilibrium distribution. Thin film samples of iron phthalocyanine (FePc) are deposited onto heated substrates. Substrates are made of either silicon, or smooth gold on silicon. FePc molecules self-assemble into small crystalline structures. Due to the planar shape of the molecules, iron chains are formed. The length of these chains depends on the deposition temperature of the sample. Here, FePc thin films are saturated in an applied magnetic field of 3 T at low temperatur
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Wang, Chien-Lung. "Synthesis and Characterization of C60-Porphyrin Derivatives for Enhanced Photovoltaic Performance through Efficient Charge Generation and Transport." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1301353045.

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29

Boskovic, Desanka. "Electronic properties of organic semiconductors and low-dimensional materials." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/456582.

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Los semiconductores orgánicos se han convertido en un grupo muy interesante de materiales por sus buenas propiedades de transporte de carga y aplicaciones tecnológicas masivas. Entre todos ellos, el rubreno ganó gran interés porque es un semiconductor orgánico con la movilidad más alta del portador, que puede alcanzar 40cm2=V s para los agujeros. Aquí ofrecemos una descripción completa de los primeros principios de las propiedades electrónicas y el acoplamiento electrón-fonón (incluyendo el tipo de acoplamientos Holstein y Peierls) para los prototipicos cristales de rubreno. Los materia
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30

Bigatti, Marco. "Quantitative studies of the structure and chemistry of materials at the nano- and atomic-scale." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6393/.

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In this thesis electron microscopy was employed to characterise the nanoscale and atomic scale structure and chemistry of organic and inorganic materials. In chapter 4, the thin film morphology of the organic blend of [poly(9,9-dioctylfluorene- co-benzothiadiazole)] (commonly referred as F8BT) and poly[9,9-dioctyfluorene-co- N-(4-butylphenyl)-diphenylamine] (abbreviated as TFB) was investigated, mainly by bright field transmission electron microscopy (BF-TEM). F8BT and TFB are conjugated polymers, which are candidates to replace inorganic semiconductors in many applications because of their si
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31

Beaumont, Nicola L. "Investigating new materials and understanding the ambipolar qualities of organic small molecules for use in organic photovoltaics." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/58475/.

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Organic photovoltaics (OPVs) have huge potential for competing with current inorganic photovoltaics in the search for a reliable, renewable source of energy. It is thought that only ~10 % efficiency is necessary for commercialisation and also allows avenues towards flexible, compact, lightweight optoelectronics, with current certified efficiencies already at 12%! Although the current efficiencies have surpassed expectations in order to continue the high progress new materials need to be investigated. Through understanding current materials and utilising new donor and acceptor materials the hop
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Alnoor, Hatim. "Toward the Optimization of Low-temperature Solution-based Synthesis of ZnO Nanostructures for Device Applications." Doctoral thesis, Linköpings universitet, Fysik och elektroteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-141753.

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One-dimensional (1D) nanostructures (NSs) of Zinc Oxide (ZnO) such as nanorods (NRs) have recently attracted considerable research attention due to their potential for the development of optoelectronic devices such as ultraviolet (UV) photodetectors and light-emitting diodes (LEDs). The potential of ZnO NRs in all these applications, however, would require synthesis of high crystal quality ZnO NRs with precise control over the optical and electronic properties. It is known that the optical and electronic properties of ZnO NRs are mostly influenced by the presence of native (intrinsic) and impu
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Krymowski, Kevin E. "The Effect of Ligand Variation on Two-Dimensional Materials." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1495802952188467.

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34

Echard, Dalton. "Drying Methods for the Fabrication of Polymer Foam Material." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4096.

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This is a report on the study of the drying of nanoporous polymer foam material fabricated by photolithogtaphic methods. Three drying methods were employed, which were air drying, supercritical drying and freeze drying. After fabrication and drying, physical properties of the polymer foams were measured. These measurements included density of the material, Young’s modulus, surface area, and the shape of the skeletal particles. The measurements determined the effect of the polymer concentration and the effect of drying methods. It was determined that polymer concentration had a much larger effe
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Barabanova, Liudmyla. "Frictional Anisotropy of Graphene and Graphene Based Materials." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1461941753.

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36

Sanzenbacher, Lindsay M. "Raman Spectroscopic Studies of Single Crystal Diamond." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313440154.

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37

Palme, Jahi. "Investigation of the Addition of Basalt Fibres into Cement." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1361.

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Mechanical properties of concrete are most commonly determined using destructive tests including: compression, flexure, and fracture notch specimen tests. However, nondestructive tests exist for evaluating the properties of concrete such as ultrasonic pulse velocity and impact echo tests. One of major issues with concrete (which has cement as its prime ingredient) is that unlike steel it is quasi-brittle material. It tends to want to crack when tensile stresses develop. Fibres have been added to concrete for many years to reduce the amount of and size of cracks cause by temperature changes or
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Huzyak, Paige M. "Synthesis and Characterization of Organic-Inorganic Hybrid Materials for Thermoelectric Devices." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1600.

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The development of organic-inorganic hybrid materials is of great interest in thermoelectrics for its potential to combine the desirable characteristics of both classes of materials. Thermoelectric materials must combine low thermal conductivity with high electrical conductivity, but in most materials, thermal and electrical conductivity are closely related and positively correlated. By combining the low thermal conductivity, flexibility, facile processing, and low cost of organic components with the high electrical conductivity and stability of inorganic components, materials with beneficial
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Ball, Molly R. "First Principles Study of Electronic and Magnetic Structures in Double Perovskites." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483702986122186.

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40

Mishra, Rohan. "First Principles Study of Double Perovskites and Group III-V Compounds." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1345489862.

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41

Russell, David D. "Design, synthesis, crystal structure and magnetic properties of novel osmium-based B-site ordered double perovskites." Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10011271.

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<p>Transition metal oxides (TMOs) with face centered cubic arrangement of magnetic ions are composed of triangular sub-lattices. When antiferromagnetic (AFM) interactions of the same strengths between all three pathways in triangular settings are in place, spin constraints cannot be fulfilled simultaneously and the system undergoes geometric magnetic frustration (GMF). The purpose of the work presented in this thesis is to better understand the criteria for a system to undergo GMF. To achieve this, the novel B-site ordered double perovskites Ca2ScOsO6 and Ca2.2Mg0.8OsO6 were synthesized in
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Fuentes-Hernandez, Canek. "Photorefractive polymer composites with improved operational stability and performance." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280699.

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This dissertation describes advances in the operational stability and performance of polymer composites that used a new hole-transporting polymer matrix, PATPD. Stable operation is achieved when PATPD provides the transport manifold because it prevents the chromophores to act as hole-traps. Operational stability is combined with video-rate compatible response times and large photorefractive nonlinearities, comparable to those obtained with the commonly used hole-transporting polymer PVK. The advances obtained in understanding the impact of chromophore aggregation to the photorefractive propert
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Kim, Myung-Hee Y. "Calculations of the interactions of energetic ions with materials for protection of computer memory and biological systems." W&M ScholarWorks, 1995. https://scholarworks.wm.edu/etd/1539623872.

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Theoretical calculations were performed for the propagation and interactions of particles having high atomic numbers and energy through diverse shield materials including polymeric materials and epoxy-bound lunar regolith by using transport codes for laboratory ion beams and the cosmic ray spectrum. Heavy ions fragment and lose energy upon interactions with shielding materials of specified elemental composition, density, and thickness. A fragmenting heavy iron ion produces hundreds of isotopes during nuclear reactions, which are treated in the solution of the transport problem used here. A red
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Lai, Chung-Chuan. "Phase Formation of Nanolaminated Transition Metal Carbide Thin Films." Doctoral thesis, Linköpings universitet, Tunnfilmsfysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-137367.

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Research on inherently nanolaminated transition metal carbides is inspired by their unique properties combining metals and ceramics, such as higher damage tolerance, better machinability and lower brittleness compared to the binary counterparts, yet retaining the metallic conductivity. The interesting properties are related to their laminated structure, composed of transition-metalcarbide layers interleaved by non-transition-metal (carbide) layers. These materials in thin-film form are particularly interesting for potential applications such as protective coatings and electrical contacts. The
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Wei, Kaya. "Investigation of Low Thermal Conductivity Materials with Potential for Thermoelectric Applications." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/6049.

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Thermoelectric devices make it possible for direct energy conversion between heat and electricity. In order to achieve a high energy conversion efficiency, materials with a high thermoelectric figure of merit (ZT = S2σT/κ, where S is the Seebeck coefficient, σ is the electrical conductivity, T is the absolute temperature, and κ is the thermal conductivity) are in great demand. The standard approach is to optimize charge carrier transport while at the same time scatter the heat transport, a task that is easier said than done. Improving the electrical properties in order to increase ZT is limite
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McCausland, Jeffrey A. "Select Applications of Scanning Probe Microscopy to Group XIV Surfaces and Materials." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1510327417528433.

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47

Lynch, Charlotte Isabella. "First-principles calculations of NMR parameters for materials applications." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:f44b9122-1826-410e-990d-a88dc3bb1432.

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Nuclear magnetic resonance (NMR) is a powerful experimental technique for probing the local environment of nuclei in materials. However, it can be difficult to separate the large number of interactions that are recorded in the resulting spectra. First-principles calculations based on quantum mechanics therefore provide much-needed support for interpreting experimental spectra. In this way, the underlying mechanisms recorded in experimental spectra can be investigated on an atomic level, and trends can be noted with which to guide the direction of future experiments. This thesis presents two ca
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48

Armakavicius, Nerijus. "Study of novel electronic materials by mid-infrared and terahertz optical Hall effect." Licentiate thesis, Linköpings universitet, Halvledarmaterial, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-142220.

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Development of silicon based electronics have revolutionized our every day life during the last three decades. Nowadays Si based devices operate close to their theoretical limits that is becoming a bottleneck for further progress. In particular, for the growing field of high frequency and high power electronics, Si cannot offer the required properties. Development of materials capable of providing high current densities, carrier mobilities and high breakdown fields is crucial for a progress in state of the art electronics. Epitaxial graphene grown on semi-insulating silicon carbide substrates
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49

Wu, Kun-Ta. "The Road to Colloidal Self-Replication." Thesis, New York University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3614913.

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<p> Self-replication exists everywhere in nature from bacteria to human beings. Several generations of scientists have worked on self-replication in nature. However, a more challenging breakthrough is to self-replicate through lifeless matter, such as colloids. To accomplish this paradigm shift, technically, we need to investigate thermodynamics, kinetics, multi-functionality, mobility, and the formation of specific covalent bonds of DNA-coated colloids. These are the essential studies for realizing colloidal self-replication. </p><p> We present and experimentally test a mean field thermod
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Chilkunda, Raghunath 1965. "Fundamental aspects of particulate contamination of tungsten and thermal oxide wafers during chemical-mechanical polishing." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282301.

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Chemical-mechanical polishing (CMP) has emerged as a new processing technique for achieving a high degree of planarity (< 10 μm) for submicron devices in very large scale integrated (VLSI) process technology. Metal as well dielectic films can be planarized using CMP. Polishing of tungsten (W) and interlayer dielectric (SiO₂) films is carried out using alumina (Al₂O₃) based slurries which typically contain acids, complexing and oxidizing agents. One of the challenges of CMP is the effective removal of slurry particles (e.g., Al₂O₃) that are deposited on the wafer (e.g., W) surface during polish
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