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KPFM in DI AFM with NAnoscope controller V: nullifying voltage is applied to tip or to sample?

Hi. I'm working over KPFM with DI AFM with Nanoscope V controller. I have a very basic question: the nullifying voltage, such that the oscillation amplitude of tip becomes zero, and that is recorded by the NanoScope Controller to construct a voltage map of the surface, is applied to tip or to sample in my system? By reading the manual(s) it seems

Posted to SPM Digest (Forum) by pomme on Thu, Jan 23 2014
no image in tapping mode (aside noise)

Hi. I'm currently using DI AFM with Nanoscope Controller V, software version 7.0. Up to now no relevant problems with basic operations. Suddenly I got no image in tapping (see the image below) http://nanoscaleworld.bruker-axs.com/nanoscaleworld/members/pomme/files/tapping.JPG.aspx I used same procedure, same kind of tip than when my topografy was

Posted to SPM Digest (Forum) by pomme on Tue, Jan 7 2014

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