A large size
self sustained film with considerable thickness ranging from 30 μm to 500 μm was prepared
through sol gel method by adopting dimethyldiethoxysilane/tetraethoxysilane composite
material as precursors. The film exhibits satisfactory plasticity and film forming capability as
well. AFM (Atomic Force Microscope) investigation of the film surface showes a mean
roughness of 0.3 nm. Gas chromatogram/mass spectrum analysis indicates that a large a...