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A bad news is that the problem has not been solved until now...
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I have exactly the same problem !!! I use Dimension 3100. What is the model of your AFM?
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Hello Ang Li, Thank you for your reply! Yes, I have tried increasing the deflection setpoint. It turned out to make no difference, or suddenly no more deflection during the ramp,e.g. no deflection v.s. DC bias plot after -6 V to +10V. I let it scan the surface for a while and the topography image looked reasonable before I turned on ramp,. But after
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Hi friends, I would like to measure local IV spectra by D3100, NS4. I used the conductive AFM probe ´SCM-PIC´ (Pt/Ir coated highly dope Si probe). As I tried out with a new conductive probe on the sample chuck as reference (sample chuck is stainless steel and biased), its IV spectrum as shown below is very abnormal. I expected a linear IV
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Hello Stefan, Thank you very much for your suggestions! I have ordered a box of pure Pt tip(Type ´RMN´) already. It has a big problem with tip engagement. I can hardly make this kind of tip successfully engaged. So far I have no idea why the tip engagement fails all the time. Concerning PF TUNA, I am quite interested in this technique. But
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Thank you very much Dmitry for your answers and suggestions. They are helpful!
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Hi Bilal, I think Veeco has been purchased by Bruker many years ago. Best, Solong
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Hi Stefan, Andrea, Bilal, Thank you very much for your active responses and suggestions. In my case, the sample is semiconductor with metallic coating. I usually keep the ´deflection setpoint´ less than 0.1V higher than ´vertical deflection´, by which the current signal becomes stable and wearing of tip is lowered. Here I attach
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Hi friends, I am doing conductive-AFM measurements in contact mode. A repeating pattern of the edge is observed in the height image, as shown below. What can be the reasons for this phenomenon? A tip with 2 ending? Debris adhesive to the tip apex? Any of your replies will be appreciated. Thanks, Solong
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Thank you very much Stefan! I know what to do now. Best, Solong