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Hi Krishnashish, I'm sorry to hear about your troubles with the Catalyst. I agree that you should not have to manipulate the value of the deflection sens. In the previous post I recommended to try reducing the value as a troubleshooting method. If that helps, you should go back to the hard sample...
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Dear Mariam, How stiff (ballpark) is your ceramic sample? When you say the roughness is 0.5-2um what is the scan size that gives you that roughness? If you want to measure the modulus of a stiff sample, you must use a stiff cantilever. Question 1 will allow you to look in the manual and find the recommended...
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That should not be possible unless you are using some kind of filter like a plane fit or a flatten on the data. If you have not done anything to modify the data offline, please check and see if your "Offline planefit" in Nanoscope realtime is set to "Offset" or "Full". Depending...
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The first thing to check is the DMTModulus Limit. Increase it and see if that helps. If that does not solve the problem, it is likely that there is something wrong with your sensitivity calibration -- I would suggest entering a low value (maybe 10 nm/V) for the deflection sensitivity and see if that...
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Hi Esther, Wikipedia has a nice writeup about Poisson's ratio that would be a good place to start. It is not easy to measure this without a bulk sample. Some methods are: http://www.springerlink.com/content/2481427842138392/ : bulk measurement http://clifton.mech.northwestern.edu/~me381/papers/mechtest...
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for Peak Force QNM, and modulus meas, how do you reduce contribution from underlying substrate for soft and thin films, in other words what is the limit in sample thickness, does it depend on the hardness of the film?
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How do you know the Modulus value for the reference sample?
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Why DMT modulus and Deformation seems to be drifting during the measurement? How can I prevent the drifting? Why does Set Point variation cause Modulus and Deformation value change? How to choose the correct Set Point for the accurate modulus measurement for “Relative” and “Absolute”...
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What is the better lateral resolution of Modulus with Peak Force QNM?
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What standards ecan be used for PeakForce calibration? What range of moduli can be investigated?