It is now early July and I have finally started my lab work. I arrived there at about 9 am on the very first day of my lab and found out that there were only two people in the office—Alex, a graduate student in engineering school, and me. “There should be more people in the office, but most of them went to a vacuum workshop today.” Alex told me. My work officially started at 10:30 am when my post doctor Subarna came to the lab. Familiarizing me with all the facilities in lab, Subarna first gave me a lab tour. Meanwhile, he showed me all the basic operations with vacuum chamber, ellipsometer, as well as the spin coater. During the rest of this past week, I was in the process of making my own films. I learned to cut Si wafer into 1*1 cm pieces and clean the surface of these Si wafer with duster and plasma which can effectively clean up all the extra organic particles from the wafer. Further, I prepared 10 percent polystyrene (PS 8000) toluene solution as the material for spin coating. ...
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