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Showing 1 to 20 of 39 for “"phase evolution"”.

  1. Simulations of diffusion driven phase evolution in heterogenous solids

    Sadasiva, Subramanya Gautam

    … of interfacial motion and micro-structural evolution due to diffusion on the reliability of micro-electronics components. Examples of interfacial motion phenomena in solids include crack propagation, grain boundary motion, diffusion driven void motion through sur- face and bulk diffusion. …

    purdue-thes Repository record

  2. Amphiphile self-assembly and phase evolution in reactive environments

    Liu, Deborah Yang-HaoUniversity of Illinois at Urbana-Champaign2022

    Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms

    uiuc Repository record

  3. Model systems for the study of active phase evolution in complex bimetallic catalysts (PdZn)

    Paiz, Jonathan

    … study used PdZn as a model system to investigate phase transformations and its influence on reactivity. Aerosol synthesis was used to study the oxide precursors of the PdZn system, spin coating was used to synthesize model PdZn nanoparticles for phase transformations studies and preliminary work …

    unm Repository record

  4. Ultracold quantum gases in one-dimensional optical lattice potentials : nonlinear matter wave dynamics

    Anker, ThomasUniversität Heidelberg

    … from normal to anomalous dispersion during the evolution. In this way the initial expansion of a wave packet is reversed to a compression and thus the effective spreading can be suppressed. By preparing a BEC at the Brillouin zone edge, we observed bright atomic gap solitons – non-spreading wave …

    heid-diss Repository record

  5. Aerosol synthesis and Rietveld refinement of Pd2Zn

    Fitch, JIm

    … of 500oC. Through the course of studying the phase evolution of the 1:1 PdZn, it was seen that an intermediate Pd2Zn phase formed at intermediate temperatures in the course of the reduction from room temperature to 600oC. This phase had not been previously reported by any group currently …

    unm Repository record

  6. Microstructure and Electrical Properties of Mocvd-Derived Perovskite Lead Zirconium(x) Titanium(1-X) Oxygen(3) and Lead (Scandium Tantalum)(1-X) Titanium(x) Oxygen(3) Thin Films on Lanthanum Nickel Oxide Electrode-Buffered Silicon

    Lin, Chun-HsiungUniversity of Illinois at Urbana-Champaign2015

    … 3 (x = 0--0.3) (PSTT) were grown. Phase evolution of the PSTT thin films with respect to the growth conditions, including growth temperature, processing of the bottom electrode and the individual source flow rates, is discussed. The diffuse phase transition of the relaxor …

    uiuc Repository record

  7. Alumina-aluminum Titanate-titania Nanocomposite: Synthesis, Sintering Studies, Assessment Of Bioactivity And Its Mechanical And Electrical Properties

    Somani, Vikas

    … were performed for a systematic understanding of phase evolution from the synthesized gel. X-Ray diffraction technique was used to confirm the phase evolution, phase purity, crystallite size and crystal structure(s) of the phase(s). Calcination of the powder at low temperatures (700°C) leads …

    ucf

  8. SYNTHESIS, PROCESSING, AND CHARACTERIZATION OF TITANIUM CARBIDE AND TITANIUM DIBORIDE BASED MATERIALS FOR STRUCTURAL AND ELECTRONIC APPLICATION

    Fu, Zhezhen2018

    … coated precursors method. Reaction process, phase evolution, and microstructures were analyzed and characterized. The synthesized powders have the advantages of fine particle size (nano to submicron grade, 100nm to 800nm), high purity (low levels of contaminations such as free carbon and …

    siu-theses Repository record

  9. The development of nonlinear surface and internal wave groups

    Chereskin, Teresa K.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution1982

    … wave groups is investigated. Surface wave evolution was observed in an unusually long wave channel as a function of steepness and group length. Dissipation and frequency downshifting were important characteristics of the long-time evolution. The amplitude and phase modulations were obtained …

    woods-hole Repository record

  10. Growth of narrow band gap semiconductor nanowires on silicon and graphitic substrates by droplet epitaxy

    Anyebe, Ezekiel, Zhuang, QiandongLancaster University2015

    … axial growth. Furthermore, Sb-induced crystal phase evolution is elucidated as a function of Sb content. Although, pure InAs NWs show a mixture of Wurtzite (WZ) and Zinc-Blende (ZB) phases, a crystal phase evolution from a highly polytypic InAs to a quasi-pure WZ InAsSb NWs (2-4% Sb content) …

    lancaster Repository record

  11. Microtraps and waveguides for Bose-Einstein condensates

    Leanhardt, Aaron E. (Aaron Edward), 1977-Massachusetts Institute of Technology2003

    … into a double-well potential. The relative phase between the two resulting condensates was determined from the matter wave interference pattern formed upon releasing the atoms from the separated potential wells. Coherent phase evolution was observed for condensates held separated by 13 [mu]m …

    mit Repository record

  12. New Digital Audio Watermarking Algorithms for Copyright Protection

    Wang, JianNational University of Ireland Maynooth2011

    … in the development of a Complex Spectrum Phase Evolution based watermarking algorithm. In this new implementation, the embedding positions were generated dynamically thereby rendering it more difficult for an attacker to remove, and watermark information was embedded by manipulation of the …

    maynooth Repository record

  13. Bose-Einstein condensates in magnetic double well potentials

    Schumm, ThorstenUniversität Heidelberg

    … reveal a narrow distribution of the relative phase, indicating a coherent splitting process. We monitor the phase evolution throughout and after the splitting and control it by deliberately unbalancing the double well.

    heid-diss Repository record

  14. From Inception to Professionalisation: the Evolution of Intercultural Dialogue in EU Mediterranean Policies (1990-2014)

    De Perini, PietroCity, University of London2016

    … examines ICD within a broader analysis of the evolution of EU foreign policy in the area. It argues that the EU commitment to advance ICD within its Mediterranean policies can be divided into three distinct phases: a ‘phase of emergence’ (1990-2001), a ‘phase of consolidation’ (2001-2010) and a …

    city-london Repository record

  15. Structural Evolution In Mechanically Alloyed Fe-based Powder Systems

    Patil, Umesh

    … alloys was undertaken to study the structural evolution in these powders as a function of milling time during mechanical alloying. Blended elemental powders of Fe100-XBX (where x = 5, 10, 17, 20, 22, 25, 37.5 and 50 at. %) and a bulk metallic glass (BMG) composition (Fe60Co8Zr10Mo5W2B15) were …

    ucf

  16. Modeling Compact Objects with Effective Field Theory

    Martinez, Rodriguez Irvin FabianDepartment of Mathematics and Applied Mathematics2022

    … stellar structure and their coefficients in the phase evolution of the waveform, as well as the order in which they arise and the sensitivity required for the gravitational wave observatories to measure them. If these coefficients are to be measured, tight constraints on fundamental physics can …

    cape-town Repository record

  17. Structural Characterization and Material Property Evaluation in Polymer-Derived SiOC Ceramics and Ceramic Nanocomposites

    Rau, Advaith ValliyurVirginia Tech2025

    … detector limitations. Therefore, understanding phase evolution in SiOC is critical for further development and commercial application of SiOC ceramics and ceramic composites. This work focuses on fabrication and characterization of novel SiOC ceramics and ceramic nanocomposites to examine phase …

    vt Repository record

  18. A nanoscale probe of the quasiparticle band structure for two dimensional electron systems

    Soumyanarayanan, AnjanMassachusetts Institute of Technology2013

    … to create and study designer electronic quantum phases. The coexistence of superconductivity, magnetism, density waves, and other ordered phases on the surfaces and interfaces of these 2D materials are governed by interactions which can be experimentally tuned with increasing precision. This …

    mit Repository record

  19. Design and Development of Damage-Tolerant Active Materials

    Kim, So YeonMassachusetts Institute of Technology2023

    … tolerance of active materials by designing multi-phase composites incorporating secondary phases that can “proactively” divert damage into more benign forms. The specific focus is on fusion structural metals subject to 14.1 MeV fast neutron radiation, which produces transmutation helium (He) that …

    mit Repository record

  20. Development of in-situ toughened silicon-rich alloys : a new class of castable engineering ceramics

    Fischer, David S., Ph. D. Massachusetts Institute of TechnologyMassachusetts Institute of Technology2011

    … silicon matrix and reinforcing disilicide (XSi2) phase during solidification (where X is a transition metal). Experimental work is performed to characterize the thermal, microstructural, and fracture properties of a specific set of Si-(Cr,V)Si2 alloys which are based on the Si-CrSi2-VSi2 system. …

    mit Repository record

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