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 20 of 1115 for “"Transmission Electron Microscopy"”.
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Dynamic environmental transmission electron microscopy
The development of a dynamic environmental transmission electron microscope (DETEM) at the University of Illinois Urbana Champaign is documented in this thesis. The proposed apparatus is the first of its kind, combining the power of high-resolution electron imaging and diffraction of TEM, the time …
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Quantitative high resolution transmission electron microscopy
High resolution transmission electron microscopy (HRTEM) has been extensively used as a structure characterization technique in materials and biological science. In the past, qualitative use of HRTEM has been primarily employed.
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Transmission Electron Microscopy Studies In Shape Memory Alloys
… alloys with microstructural observations from transmission electron microscopy (TEM). Specifically, the goals were to examine (i) the effect of mechanical cycling and plastic deformation in superelastic NiTi; (ii) the effect of thermal cycling during loading in shape memory NiTi; (iii) the …
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Transmission Electron Microscopy Study of Domains in Ferroelectrics
… polarisation in that region. The chemical and electronic heterogeneity of the ceramic was linked to the changes in potential barrier at the grain boundary, theorised by the Heywang-Jonker model. It was inferred that the confined PbTiO<sub>3</sub> rich grain boundary region would have a higher …
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Cryogenic scanning transmission electron microscopy of quantum materials
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Transmission Electron Microscopy (Tem) Study of Minerals in Coal
… in the micron-size range by using analytical transmission electron microscopy. Specimens were thinned by ion-milling wafers cut from these coals; a cold stage cooled by liquid nitrogen was used to reduce thermal degradation of the minerals by the ion-beam.
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Dynamic environmental transmission electron microscopy of spin crossover materials
… of spin crossover (SCO) materials via dynamic transmission electron microscopy (DTEM). SCO metal complexes commonly contain first-row d4-d7 transition metals in an octahedral ligand field, which splits the d-orbitals into tripledegenerate t2g and anti-bonding, double-degenerate eg* levels. The …
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High-resolution transmission electron microscopy of III-V FinFETs
… technology due to their outstanding electron transport properties. InGaAs n-channel metal-oxide-semiconductor field-effect transistors have already demonstrated promising characteristics, and the antimonide material system is emerging as a candidate for p-channel devices. As …
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CHARACTERIZATION OF HETEROGENEOUS CATALYSTS USING ADVANCED TRANSMISSION ELECTRON MICROSCOPY TECHNIQUES
… of Heterogeneous Catalysts using Advanced Transmission Electron Microscopy Techniques. Major Professor: Volkan Ortalan.
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Characterisation of focused ion beam nanostructures by transmission electron microscopy
… from ~5nm to ~30nm. The Fresnel mode of Lorentz microscopy revealed that a reduction in the mean moment was also observed at these doses but no clear changes in coercivity or magnetisation reversal behaviour were observed until the systems were rendered non-magnetic. This occurred at 1x10^16 and …
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Transmission Electron Microscopy Of Structural Disorder In Two-Dimensional Materials
Transmission electron microscopy (TEM) of two-dimensional materials (2D) offers an unprecedented opportunity to study disordered systems down to the single-atom level. The reduced dimensionality of these systems provides a two-fold opportunity: first, 2D materials serve as model systems for …
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Investigation of phase separation in GaInAsSb using transmission electron microscopy
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1998.
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In Situ Liquid Cell Transmission Electron Microscopy Studies of Pathological Biomineralization
… This work leverages in-situ liquid-cell transmission electron microscopy (GLC-TEM) to capture real-time transformations of calcium oxalate and cholesterol, revealing nanoscale pathways that govern stability, growth, and dissolution during crystallization. In-situ GLC-TEM provides an …
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Observation and characterisation of magnetisation ripple using Lorentz transmission electron microscopy
Lorentz transmission electron microscopy (LTEM) has proved itself to be an invaluable technique when investigating in-situ micromagnetic behaviour of magnetic thin films. The nano-scale visualisation of the magnetic structure allows for not only the mapping of hysteresis behaviour, but quantitative …
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Investigating nanoscale dynamics in light absorbing nanostructures using transmission electron microscopy
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Atomic-scale and three-dimensional transmission electron microscopy of nanoparticle morphology
… of nanoscale materials. This thesis addresses transmission electron microscope characterisation of nanoparticle morphology, concerning specifically the crystal- lographic status of novel intermetallic GaPd2 nanocatalysts and advancement of electron tomographic methods for high-fidelity …
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A transmission electron microscopy study of inert gases in silicon and iron
… this work, iron samples have been prepared for transmission electronmicroscopy (TEM) via a focused ion beam system (FIB), while silicon tri-layer samples(monocrystalline silicon — silicon oxide — polycrystalline silicon) were produced bypreparing cross-sectional slices of the bulk material by …
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