February+28-+March+1

February 28th:

-I'm scanning a sample of graphite, exposed from 1:00 .m. to 3:30 p.m. today -Im still scanning on the portable AFM

-There was occasional interference so severe that I could not scan, so I had to move the sample around below the scan head several times -These movements did help decrease the amount of interference in the scans immediately after the movements, but the distortion usually came back after sever scans



March 1st:

-I scanned the sample yesterday, exposed from 1:00 p.m. to 3:00 p.m. today -The first few scans weren very distorted, but after changing several settings, namely the gains and slope, the scans became clearer -Overall, the slope setting needed to be significantly higher than usual for today's scans, and the scans seem to have a mound-like profile -The only explanation i could think of was that the scan head was possibly severely off-axis. -I withdrew the scan head, adjusted it, and re-approached, but the difference was negligible, with the scans still being strangely sloped