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Full-Text Articles in Physical Sciences and Mathematics
Diamond Intracrystalline Stable Isotope Chemical Image Analysis By Time-Of-Flight Secondary Ionization Mass Spectrometery, Tyler J. Sundell
Diamond Intracrystalline Stable Isotope Chemical Image Analysis By Time-Of-Flight Secondary Ionization Mass Spectrometery, Tyler J. Sundell
MSU Graduate Theses
The chemical resistance of diamond allows in-situ study of the diamond source regions. For a majority of gem quality diamonds, this source region is the sublithospheric mantle keel of a cratonic nuclei. Through analysis of stable isotopes, radiogenic isotopes and trace elements, diamond geochemical analyses can define chemical fluxes in the mantle keel. However, such studies require multiple methodologies for each chemical suite, high spatial resolution and analytical precision. Here, I evaluate Time-of-Flight Secondary Ionization Mass Spectrometer (ToF-SIMS) as an alternative method for diamond geochemical analyses. ToF-SIMS analysis can perform in cation and anion mode to measure the entire periodic …
Synthesis And Characterization Of Block Copolymers For Shear Force Responsive Materials And Sugar Conjugated Fluorescent Probes, Jacob Ryan Blankenship
Synthesis And Characterization Of Block Copolymers For Shear Force Responsive Materials And Sugar Conjugated Fluorescent Probes, Jacob Ryan Blankenship
MSU Graduate Theses
Herein, I present my work towards two goals: shear force-responsive materials and sugarconjugated fluorescent probes for bacterial identification applications. The first work is on the development of stimuli-responsive polymers that allow for precise control over the release of encapsulated material. Stimuli-responsive polymers are becoming increasingly important in drug delivery and other applications. However there have been few reports on shear force-responsive micellar systems. I show the synthesis, and characterization by 1H and 13C NMR of four macro-chain transfer agents (macro-CTAs), one of which has not been previously reported. The resulting macro-CTAs were used in polymerization of vinyl acetate …