Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Nanoscale order"”.
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Quantifying Nanoscale Order in Amorphous Materials via Fluctuation Electron Microscopy
… by non-idealities in the sample unrelated to nanoscale order, can easily dominate the measured variance, producing erroneous results. We show that reexamination and correction of the contributions of artifacts to variance is necessary to obtain an accurate and quantitative description of the …
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Role of nanoscale order in the nucleation of amorphous chalcogenide alloys
… measurements that are sensitive to topological order on the nanoscale. In samples that are pre-annealed before crystallization experiments, the nanoscale order consistently increases and the nucleation times consistently decrease, in agreement with the interpretation that the nanoscale order …
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Quantitative analysis of nanoscale order in amorphous materials by stem-mode fluctuation electron microscopy
… statistical technique that measures topological order on the 1 – 3 nm length scale in amorphous materials. Extracting quantitative information about the nanoscale order from FEM data has been an on-going challenge due to issues both in experimental procedures, as well as in development of data …
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Optical and Electronic Properties, Nanoscale Structural Order, and Transformation Kinetics of Phase Change Materials
… We provided clear evidence for the existence of nanoscale structural order in all amorphous states of Ge2Sb2Te5 and AgInSbTe, using Fluctuation electron microscopy (FEM) carried out in the transmission electron microscope. The nanoscale order is higher in the thermally annealed amorphous states …
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Systems Materials Design of Ordered Nanocomposite Assemblies
… unified material platforms. At the molecular and nanoscale, I investigate how multivalent supramolecular interactions can be rationally programmed by controlling the architecture of polymer binders grafted to nanoparticle surfaces. Through systematic variations in polymer topology, recognition …
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Ultrafast photoinduced phase transitions in complex materials probed by time-resolved resonant soft x-ray diffraction
… transitions) often accompanied by nanoscale order of spins, charges, orbital occupation and by lattice distortions, which make these material attractive. Magnetite served as a prototype for functional TMOs showing a metal-to-insulator-transition (MIT) at T = 123 K. By probing the …
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The role of alloying elements on the microstructure and thermal stability of Refractory Metal High Entropy Superalloys
… the AlMoNbTaTiVZr system. These alloys comprise nanoscale order-disordered B2+bcc microstructures, similar to nickel-based superalloys, and have promising high temperature compressive yield strengths and competitive densities. However, RSAs typically have a ordered B2 matrix and can form …