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Hi! If you have a system with a Z sensor (closed loop Z), you could set the X axis as Z sensor (or might be called Height Sensor) instead of Z or height. Probably the piezo is moving slightly non-linearly as the applied voltage changes. Maybe you need to set one of the other ramp channels to the Z/Height Sensor before you can select that as X axis for
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Hi, you can just add another channel with the other trace/retrace setting set. So in my case for example I use following channels: 1: height (trace) 2: deflection error (trace) 3: friction (trace) 4: height (retrace) In my AFM I can use up to 8 channels so it's not a problem to add more channels if needed
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Hi! I sometimes see a kind of oscillation of the cantilever signal when doing force curves and the tip is in contact with a hard substrate. This oscillation can be seen in the horizontal and vertical channels (but not always) and occures almost exactly at 300 Hz. I've seen this with two different cantilevers (OBL and AppNano's Hydra2R, both
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Zoom in by holding Ctrl and dragging a box with the mouse around the area that you want to enlarge. Zoom out by double-clicking on the graph or clicking on the magnifying glass which will appear after zooming. Cheers, Janne
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I want to add to Andrea's explanation, that after some operations in the Ramp mode the tip is moved towards the surface until the deflection setpoint (not the trigger point) is reached and then retracted. At least it looks like that when watching the deflection signal during operations in the ramp mode. This doesn't happen during ramping, but
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Go to the Microscope menu and select Engage Settings... Then lower Engange Gain (e.g. 0.2 or so), and also lower the Engage Step (e.g. to 5um). Maybe this helps. Try different gains.
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I know that the freely available tool Gwyddion used to have a tip deconvolution feature, but I haven't really used it. Maybe worth a look.
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You can try to "switch off" adhesion by changing the environment. Depending on the forces which lead to adhesion this could be e.g. increasing ionic strength, changing pH, or similar. Of course always be aware that this might also change the morphology on the polymer. You can also try to coat the cantilever. If the tip is gold-coated then
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You can just one side of the step for the flattening (use the larger area if they are not equal). You can exclude the other side and the step by using the Threshold option in the Flatten dialog (e.g. use Z < 20%) or something which only uses the bottom 20% of height pixels for the flattening. This works best if the edge is perpendicular to the fast
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Ok I understand. Maybe somebody else has a better answer, but for me the data type "Deflection Error" is equivalent to Force after a linear transformation.