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Thanks for the effort in repairing this demonstration. I hope that you saved it somewhere, for future reference! I have executed this experiment exactly, and then extended the idea to longer hold times which are more appropriate for my samples. I have three observations: First about half the time, the software objects with a message indicating failure
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Is the PicoForce software usually installed? I do not see it on our computer. If not can I obtain a copy? Christopher
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So that makes me think that a "creep" (force controlled) experiment is not possible. With closed loop on, the feedback is still keying in on a displacement (zsensor) not on a force (deformation). Does that sound correct? Also I was unable to capture data with the strip chart using the surface hold option. I can get relaxation data (displacement
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Thanks for the response. I am using a newer Dimension Icon with NanoScope 8.10. I had tried the surface hold option, but I could not get data to be captured while the hold was taking place. Since then however, I think I understand the strip chart operations better and perhaps I can make it work now. A second question: with Closed loop on, will the system
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Thanks for the response. I will try what you are suggesting and see how much error I am dealing with. The changes in indentation depth are not huge and the sharper the point, the slower the change in area with depth. Unfortunately I am using one of the cube corner nanoindentation probes for the high stiffness, which does have quite a bit of area change
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I am conducting some custom force spectroscopy tests and am interested in how much the tip penetrates the sample. I am measuring force relaxation to obtain viscoelastic properties. Presently, I am applying a specified Z ramp and I am holding this Z for a specified length of time while monitoring deflection error. I would like to know how deep the probe
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I am imaging and measuring mechanical properties of hardened portland cement paste. As you may (or may not) suspect these samples have fairly high surface heterogeneity arising from the intrinsic porosity even after thorough polishing. Additionally the paste is a composite of several phases from ~60GPa down to ~5GPa. As I understand, the "tip radius"