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Q: Is there any output in the QNM mode which is comparable to the phase imaging in tapping? What is the difference between Inphase and Quadrature outputs, in layman terms? Why does the quadrarture seem to have more noise? A: The inphase is the Rcos(theta) and quadrature is the Rsin(theta) outputs from the lockin that is driving the PFT modulation (usually
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\@Sens. DeflSens: V 43.2132 nm/V is the 'soft scale' for the vertical axis of the force plot. The soft scale allows conversion between raw units in Volts and metric units. \@Sens. Zscan: V 12.50 nm/V is the 'soft scale' for the horizontal axis of the force plot. You can find more information on importing force data by searching the forum
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After some more discussion with Palli and review of the matlab code, it appears that the raw data is read from binary and ordered correctly, but it is not scaled. Coincidentally the scaling factors are very close to 1.0 with this data, and that caused a lot of confusion for both of us. Here is how to scale the data from this force distance file (created
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Or, worded another way: Those are raw outputs from the lock-ins. They are not used in QNM, and don’t really tie well to a physical property (though dissipation would be the closest). The point of having them is that they can tell a user that there is a difference in material properties, just not precisely what the difference is. This is similar
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The error message would be very useful. Can you also post the file that will not open? Or you can email them to my firstname dot lastname at bruker-nano.com --Bede
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Hi Palli, I do not see any code in these files that would read the header to find the deflection scale and then multiply it by the data points to scale your deflection values. Did you find your issue? Or maybe we still don't have the right matlab files? Or I'm confused about where you see the 4% difference? --Bede
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If I understand correctly, the same file opens just fine with Nanoscope Analysis 1.40r1sr4 on the XP system, but not on the windows 7 system. Is that correct? Is Nanoscope Analysis able to open any files on the windows 7 system? For example, can you open this one: psldpe.002.8ch.123 ? --Bede
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Hi Esa, Version 1.40r1sr4 works great with Windows 7 64bit. Some of the older versions had issues, so I would recommend downloading the latest if you are not sure which version you have (instructions are here: http://nanoscaleworld.bruker-axs.com/nanoscaleworld/media/p/775.aspx ). You will need administrative rights to install the software. Once installed
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This may be happening if you are using soft tapping and the system is not able to find the surface again after fully retracting (which it does when it switches the closed loop Z). I would suggest decreasing teh tapping setpoint after entering ramp mode, but before you start ramping, or you could try turining closed loop Z off -- you can still use the
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It appears that the manual is incorrect in this case. I would recommend using the "Hard Scale". Can you tell me the version of the manual? That you are using? I'll check it out... --Bede