Force Curve Baseline Correction

Yen Hseu posted on Sat, Apr 25 2015 9:57 AM

rated by 0 users

Hello.

I am working with a Bioscope Catalyst with a Nanoscope V Controller.

At the start of the vertical ramp when the tip has been pulled up into air, I have recorded a 0.6V~1.3V Vertical Deflection signal on the E-Box instead of the expected 0.00V. This caused the resulting vertical ramp to have a baseline offset and not start out at 0nm deflection.

I have made sure to center both the vertical and horizontal deflection values to as close at 0.00V before engaging.

I know this question has been asked before and that the baseline offset can be corrected using the analysis software, but I still don't quite understand what is causing this offset in the vertical deflection value?

The explanation provided in the analysis software manual indicated that the baseline offset was caused by artifacts but did not expand into further detail. 

Thank you!
-Yen