The Nanoscale World

How is Height Calculated in Peak Force QNM

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meaton212 posted on Tue, May 23 2017 11:30 AM



I was wondering how exactly is height calculated in peak force QNM. I measure rubber blends that have been mechanically prepared so that they are as flat as possible. Except, no matter what, I always see a height differential corresponding to the two different phases of the material as shown in the other channels of the image. Is there a height artifact caused by regions of different stiffness (thus indentation depths) that cause the software to register a height difference when it is just a stiffness change? It would help understand if I new how the height was calculated in QNM based on the force curve.



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