Physics Department Lunchtime Seminar Series* – Week 3
“3D NANOSTRUCTURES BY OBLIQUE
ANGLE PHYSICAL VAPOR DEPOSITION”
Speaker: Dr. Tansel Karabacak
(05/24/2006 Wed., 12:00 – 1:00 pm, Science Center 1C13)
Abstract
Growth front morphology of a thin film formed by physical vapor
deposition is controlled by many factors including surface diffusion and
shadowing effects. Instabilities can occur if shadowing is more dominant
compared to other surface effects and can lead to many diverse physically
self-assembled 3D nano-size structures. Shadowing effect becomes the
leading mechanism during recently recognized oblique angle deposition
technique, where the incident flux of atoms is incident on a rotating substrate
at grazing angles. By simply controlling the deposition angle and substrate
rotation speed, nanostructures of large variety of materials in the shapes of
rods, balls, or springs can be obtained easily that are otherwise difficult to
produce by lithographical techniques. In this talk, a brief overview of the
growth mechanisms and physical properties of the nanostructures by oblique
angle deposition will be presented. In addition, utilization of these
nanostructures in some applications will be discussed.
Please refer to our Lunchtime Seminar website for update:
http://www.rpi.edu/dept/phys/Dept2/Summer_Seminar/summer_seminar.html
(*Physics graduate student summer activities, supported by PGSC)