We examined CVD grown polycrystalline diamond films having different methane concentrations to detect defects and study the possible correlation between the methane concentration used during the growth process and the defect density. SEM and Raman results show that the amorphous and sp2 carbon content of the films increases with methane concentration. Furthermore, photoelectric emission from diamond is confirmed to be a two-photon process, hence the electrons are emitted from normally unoccupied states. We found that the photoelectric yield, for our samples, decreases with the increase in methane concentration. This trend can be accounted for in two different ways: either the types of defects observed in this experiment decrease in density as the methane concentration increases; or, the defect density stays the same or increases, but the increase in methane concentration leads to an increase in the electron affinity, which reduces the overall photoelectric yield.

The metamorphosis and transformation of forms as metaphors continued to be the focus of my work. The use of modular forms with lightweight materials increased mass and volume in my work. The reconstructing and reassembling of sculptures formed with modules was an excellent vehicle for the content of metamorphosis and transformation. The focus of this problem was to create a series of multi-media art pieces that were each composed of a number of modules.