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Thanks!!
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If I have a silicon substrate and I want to measure normal forces, I take the change in setpoint x the cantilever stiffness x the sensitivity from the force displacement (fd) curves. However, if I am scanning in a liquid (fluid cell) do I use the sensitivity from the fd curves from the liquid or the fd curves from the silicon substrate in air?
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Alex, I would like to create a thin film on silica with glycerol and Au particles. The Au comes suspended in water. Since glycerol is soluble in water, I mix the two, diluting the glycerol down to anywhere between 2-5%. I either try dip coating or spin coating, but there doesn't seem to be any particles on the substrate. The Au particles tend to
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I'm trying to create a ~2-3 nm thick film with glycerol and gold nanoparticles(30 nm in dia.). The gold particles are in suspension in DI water. I've tried a 5% solution (diluted glycerol) and the DI and gold using a dip coating process with withdraw speed (0.75 mm/min). The film thickness is ~100-200 nm. Spin coating is even worse. Does anyone
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Hi Stefan, I usually let it warm up for 1hr then start using it. I usually have TMR values around 300mv, eventually iy gets up to the 2V, stays there for abt 2-3mins and drifts back down again. I'm attaching a 50micron borosilicate ball to a 3N/m stifness cantilever. The shift goes up, then comes back down and repeats. Regards, Dave
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When using the afm (multi mode) in lateral force mode, I've noticed that after turning it on the TMR values are in the mV range after scanning for more than 2 hrs, it begins to drift and eventually reaches the voltage range (2-3V). Could this be due to the age of the afm? I believe that it is about 10 yrs old, and might need servicing. How reliable
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Has anyone tried attaching a borosilicate ball to a triangular cantilever (.58n/m stiffness) to take measurements (friction) on a substrate like silica (1,0,0). Even without the ball and a regular tip the vertical sum signal starts increasing in the positive direction before it actually engages. Also when scanning, increasing the set point causes the