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.
Results
Showing 1 to 20 of 77 for “"HRTEM"”.
-
A Nano-Scale Chemical and Structural Characterization of Chinook Salmon (Oncorhynchus tshawytscha) Otoliths Using a FIB and HRTEM
… resolution transmission electron microscopy (HRTEM). The results constrained the relative distribution of several elements; silicon-enriched nodules were found in the post-hatch otolith, and manganese, an element known to be enriched in the greater otolith core, was most concentrated at the …
-
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.
-
Resolving the Structure, Morphology, and Trace Metal Association of Nanominerals: The Case for Schwertmannite
… resolution transmission electron microscopy (HRTEM). HRTEM offers advantages over bulk techniques such as powder x-ray diffraction and pair distribution function (PDF) analysis of synchrotron data, in its ability to discern multiple phases within poorly crystalline nanominerals. Based on …
-
Stochastic Space-Charge in Projection Electron Lithography and High Resolution Transmission Electron Microscopy
… Transmission Electron Microscopy (HRTEM). These particular technologies were chosen for their technological relevance and their distinct mechanisms of image formation--SCALPEL exploits amplitude contrast while HRTEM exploits phase contrast. To provide insights into the occurring …
-
Interfacial Structures of Oxides on GaAs
… transmission electron microscopy (HRTEM) indicates that deposition of MgO, Al$\sb2$O$\sb3$, and Ga$\sb2$O$\sb3$, fail to yield a truly amorphous oxide. Although deposition of SiO$\sb2$ results in an amorphous oxide. There lacks a transition layer between SiO$\sb2$ and GaAs. A …
-
Catalytic activation of Rh,Pd nanoclusters supported on Ceria
… Resolution Transmission Electron Microscopy (HRTEM) studies on the catalytic activation of Rh,Pd/CeO2 nanocatalysts during ethanol steam reforming (ex-situ), as well as EXAFS and HRTEM studies of catalyst activation under reducing H2 (ex-situ) and in-situ EXAFS under CO atmospheres. The …
-
Combustion synthesis of fullerenes and fullerenic nanostructures
… transmission electron microscopy (HRTEM) showed that the soot contains nanostructures, including onions and nanotubes. Although flame conditions for forming fullerenes have been identified, the process has not been optimized and many flame environments of potential interest are …
-
High-resolution transmission electron microscopy of III-V FinFETs
… transmission electron microscopy (HRTEM) in an effort to understand how interfacial properties between the channel and high-k dielectric affect device performance. At the interface between the channel material, such as InGaSb or InGaAs, and the high-k gate dielectric, properties of …
-
Nanoscale Patterning of Chemical Order Introduced by Displacement Cascades in Irradiated Alloys
… He ion cannot. Experimentally, we propose to use HRTEM imaging to identify the patterning of chemical order in Ni3Al.
-
Synthesis, Characterisation and Functionalisation of CdSe Quantum Dots
… transmission electron microscopy (HRTEM) highlighted a transition of the crystallite phases obtained, from cubic zinc-blende to hexagonal wurtzite and back again to the cubic phase as a function of reaction time. The nature of this phase shift is believed to be due to the rapid …
-
DESIGN AND SYNTHESIS OF STAINLESS-STEEL NANOPARTICLES: OXIDATION BEHAVIOR AND MORPHOLOGICAL EVOLUTION
… NPs via transmission electron microscopes (TEM/HRTEM), structural characterization via X-ray diffraction (XRD), surface analysis via X-ray photoelectron spectroscopy (XPS), thermal property analysis via thermogravimetric analysis (TGA), organic ligand characterization using infrared spectroscopy …
-
Rare earth oxide thin films from solution based inorganic precursor deposition as potential candidates for insulators in advanced gate stacks : deposition mechanism and performance studies
… wurden mittels AFM, STM, TGA, XPS, XRD, HRTEM sowie I-V und C-V Messungen charakterisiert. Es konnte gezeigt werden, dass der neuartige Ansatz ultradünne, kohlenstofffreie Filme liefert, die aufgrund ihrer elektrischen Eigenschaften zur Anwendung in DRAM Bauteilen in Frage kommen.
-
Utilizing Electron Microscopy And Spectroscopy Methods To Understand Water Structure And Water Doping
… rapid freezing; and using high resolution TEM (HRTEM) and scanning TEM (STEM) after drying. Many other characterization techniques were evaluated but most of them were found to be not suitable, mainly due to detection limits.</p> <p>EELS characterization showed that samples from different water …
-
Growth mechanisms of carbon nano-fibers, -tubes, and graphene on metal oxide nano-particles and -wires
… resolution transmission electron microscopy (HRTEM) including elemental and phase analyses, and evidence of surface-bound base growth mechanisms are observed for the zirconia NPs. Titania NP growth conditions are investigated parametrically to achieve homogeneous and relatively (vs. zirconia) …
-
Influence of grain size, morphology and aggregation on galena dissolution
… on a single nanocrystal. High-resolution TEM (HRTEM) images indicated the {111} and {110} faces dissolve faster than {100} faces on galena nanocrystals, rationalized by the average coordination number of ions on each of these faces. To assess the aggregation effect, dissolution experiments of …
-
The Onset and Blocking of Slip in Nickel Aluminide[001]
… component along the three-fold line directions. HRTEM observations of the locked dislocations end-on show a compact core and rule out climb decomposition as the cause for the locking. The blocking of slip by dislocation locking along two line directions is in contrast to dislocations that are …
-
DLC Thin Film Assisted ZnO Nanowires Growth
… changing the DLC film deposition temperature. HRTEM examination confirms the NWs were single crystalline with c-axis preferred orientation (lattice parameter c = 0.519 nm). From our experiment results, a ZnO polycrystalline layer forms first and then ZnO NWs grow on top of it. The NW has two …
-
The Synthesis of Core-Shell Iron@Gold Nanoparticles and Their Characterization
… and magnetic properties of the products. HRTEM images show clear core-shell structure with different crystal lattices from Fe and Au. SQUID magnetometry reveals that particle magnetic properties are not significantly affected by the overlayer of a moderately thick Au shell. The Au-coated …
Page 1 of 4