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Hi Friends,
I scanned a sample 2 days ago by contact mode and repeated it today. But the image looks weird today. The upper image was scanned 2 days ago. The lower one is scanned today. The sample should have the structure shown in the upper image, i.e. small particles.
What is the reason for this problem? I use the tip SCM-PIC.
I don't think they are that different, the z-scales are very different. First make both scales the same e.g. 50 nm and compare again. There are some very high (dirt?) points there, and seeing the horizontal lines the tip could have picked up some of the dirt so that the tracking is not very good. Perhaps increase the setpoint a little bit if your sample is not very soft
Thanks a lot Joop.
I change the z-scale and the pictures are not so much different.