Dr. Yiping Zhao of the University of Georgia Department of Physics and Astronomy will be presenting his talk entitled "Advanced Nanofabrication by Dynamic Shadowing Growth" this week.

Dynamic shadowing growth (DSG) or Glancing Angle Deposition (GLAD) is a simple nanofabrication technique that combines oblique angle deposition (OAD) with substrate manipulations and source controls in a physical vapor deposition system. The geometry shadowing effect is the dominant growth mechanism resulting in the formation of various nanostructure arrays by programming the substrate rotation in polar and/or azimuthal direction. With recent advance in a multilayer deposition procedure, one can design complex and multifunctional heterogeneous nanostructures. In addition, with a codeposition system of two or more sources, novel nanocomposites or doped nanostructure arrays can be produced, which results in nanostructures with different morphology. In this talk, I will give a general overview on the art of designing different nanostructures by DSG, and highlight our recent progress in multi-component nanorod array fabrication. Those multicomponent nanorods can be used as a high sensitive virus and bacteria sensor base on florescence enhancement, and novel energy related applications, especially for designing new photocatalytic materials for hydrogen generation.