The Nanoscale World

Resolution dependent waviness?

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lgc posted on Fri, Apr 5 2013 10:43 PM

Hello,

I would like to hear your advice in interpreting what is shown in the images below. They were made at 0.1 micron in contact mode, in 256, 512 and 1024 lines, fromleft to right, respectively, on the polished surface of some carbonaceous rock.

Apparently, there is a surface rippling as resolution increases, and I don't know how to interpret this, owing that, even at the lowest resolution shown, the separation among scan lines is commensurable with interatomic distance. 

Best regards ant thank you very much.

 

 

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Does this result reproducible? Do you change other parametres when scanning in different resolution?

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Bruker Employee

Hello Igc,

Is it possible that the rippling you are seeing could be a result of noise in the image? This would tend to increase as you increased the number of scan lines. As suggested, have you tried changing your scan parameters (setpoint, gains) to see if this affects the rippling? Also, changing your scan angle will help tell you if the rippling is real (part of your sample) or not.

Good luck!

Best,

Andrea 

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