PHYS 375 |
| The goal of this work is to develop interfaces that provide the selectivity and stability for biological environments, and that are also compatible with microelectronics processing methods. There are two parts in this work: the carbonization process of 2×1-reconstructed Si (001) in acetylene at 820°C and the development of a simple method to modify c-SiC surfaces with oligo (ethylene glycol) molecules for biological studies. In the first part, c-SiC growth dynamic has been monitored by our unique in situ surface science technique (Time of Flight Scattering and Recoiling Spectroscopy) and the volcano growth mechanism has been proved directly from the changing of the surface components in the growth process. The use of high acetylene pressure (2×10-5 Torr) has produced a continuous hole-free thin c-SiC film, which is higher temperature tolerance, more stable and more hemocompatible over silicon for making electronic device. In the second part, we modified SiC surfaces with oligo (ethylene glycol) molecules, which have been shown to be biocompatible, through hydrosilylation under UV conditions. X-ray photoelectron spectroscopy data showed that the resulting OEG-terminated monolayer on surfaces resisted non-specific adsorption of protein fibrinogen. |
|
PHYS Poster Session - General Experiment
7:30 PM-10:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Hall A, Poster
Sci-Mix
Division of Physical Chemistry |