|Areas of Study||Electron Microscopy and Theoretical Solid State Physics|
Background My background is in the theory of electron scattering as applied to electron microscopy and analysis. In particular I have been involved with the development of electron energy loss spectroscopy (EELS) as a technique for not only mapping the composition of materials, but also studying electronic structure and bonding at near atomic resolution. This has led to an interest in first principles theory of the strength of materials and recent work on Li battery materials and carbon nanotubes. Theoretical modeling of electron and X-ray scattering has led me to apply transport theory methods to dose calculations for electron and X-ray radiation treatments of cancer and improved radiation detection. I am also interested in the nucleation and growth of calcium oxalate kidney stones. I have been using Scanning electron Microscopy and Atomic Force Microscopy to characterize the microstructure of kidney stones. We were able to show that the fundamental crystallites were about 50-300nm in size. As with all problems in biomineralization the fundamental issues relate to the interaction of organic macromolecules such as proteins and lipids with the mineral surface. I am now applying theoretical moclecular modeling methods to characterizing these interactions.