Week+of+8-1-12

10-1-12 I came in today and Matt was scanning. I changed the tip and began scanning a sample of C-60 on Gold. AJ-8135.71 Å, 4 A/D, 200 ms/line. I moved the scanning region to the left to try to avoid the large pits in the bottom middle.

AK-8135.71 Å, 4 A/D, 200 ms/line- I zoomed into a region in the upper middle of this scan to try and get a better image that was not blurred by huge pits and low resolution. AL- 1000 Å, 16 A/D, 100 ms/line. The next three images, AM, AN, and AO, were all of the same region to check if the surface was decent enough quality for us to heat. The features in the images were similar enough that we decided the tip was of good enough quality for us to heat and try to find a change. I heated up the gold after AO. I retracted the tip 15 steps then heated the gold for 5 seconds. I let it cool for a couple minutes that it took 19 steps to approach. Then, it drifted for a few more minutes before I scanned. I took a scan of the full area to look for the region from before. AP-8135.09 Å, 4 A/D, 300 ms/line- It was definitely of the same region as before. I zoomed in to the part of the image where the region from AL-AO should have been. AQ-2000 Å, 32 A/D, 100 ms/line- I changed the A/D gain to 16 following this image and took a scan of the same region after adjusting for drift. AR-2000 Å, 16 A/D, 100 ms/line- I took another image of it to try to get a grasp on where the region from before could be. I ended up moving the scanning region to the right to look for it because I couldn't seem to find it here. AT-2000 Å, 16 A/D, 100 ms/line. None of the features in this image resembled those from before. I moved the scanning region slightly to the left this time. AU-2000 Å, 16 A/D, 100 ms/line. I made the scanning region smaller to 1500 Å following this image in order to scan the parts of it that are not the huge pit. AV- 1500 Å, 32 A/D, 100 ms/line. I moved the scanning region up and to the right. There looked like there were some similar features between this image and AO. I also made the scanning region only 1000 Å. AW- 1000 Å, 32 A/D, 100 ms/line. I moved the scanning region to the left a slight bit because I could not find the region from earlier. AX- 1000 AÅ, 32 A/D, 100 ms/line. I moved the scanning region slightly more up and to the right to avoid the pit lining the left side. AY-1000 Å, 32 A/D, 100 ms/line. It did not appear to be similar to any of the regions from before the heating. I moved it fairly far left and somewhat down. AZ- 1000 Å, 32 A/D, 100 ms/line. There was a huge pit in this image lining the right side. I moved it to the left to avoid this. BA- 1000 Å, 32 A/D, 100 ms/line. It didn't really resemble anything from earlier. It didn't look like I was going to be able to find this region as my many attempts have been unsuccessful and it was near the time to leave. I decided to call it a day instead of trying to look for the region from earlier or changing the tip.