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  • Force Mesurment in Peakforce QNM?

    Dear All, I started using peakforce mode recently. as far as I understand is that the peakforce is a dynamic mode in which the drive frequency is very low (2Khz) compared to the resonance frequency. Also it uses a peakforce as a feedback loop (working at constant peakforce). My question is simple: How this force is measured ? I think that the AFM outputs
    Posted to SPM Digest (Forum) by msouier on Wed, Oct 25 2017
  • Very low SUM signal

    Dear All, what are the reason of low laser sum signal apart from bad tip coating ? an MFM tip was used and the sum signal was around 3V. Now the signal on the similar MFM tip can be at maximum 0.04V !! while we can see the laser spot on tip using the video. Also, if we rotate the back lever to tilt the mirror, can we see the movement of the mirror
    Posted to SPM Digest (Forum) by msouier on Sun, Jan 17 2016
  • Ampltiude/Phase distance curves in tapping mode

    I have a very basic question since I am new in using Multimode 8 AFM. I would like to perform Amplitude/Phase-Distance curve. I Failed to find the steps in the manual, Can you please show me the steps to record the curve in tapping mode, Thanks & regards, Souier.
    Posted to SPM Digest (Forum) by msouier on Tue, Oct 13 2015
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