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Robert Carpick |
University of Wisconsin |
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Welcome to the
Carpick Lab’s software toolbox! All
materials on this site are property of the Carpick Group at the University of
Wisconsin-Madison. They are authorized for use in government or academic
research laboratories and non-profit institutions only.
Analyzing NanoScope files with
MatLab This page provides free access
to the analysis tools developed by the Carpick group at the University of
Wisconsin-Madison. Among the tools available here are instructions for
gathering friction versus load (FvL) data from a DI NanoScope (III or IV)
AFM, MatLab scripts for analyzing FvL and adhesion data, and directions for
the use of these scripts. Please read carefully the headers in each of the
scripts and the directions in the manual provided below: Processing a NanoScope file: The following scripts handle DI
data files as described in the manual. You will need 'get_image_data,'
'di_version,' 'di_header_find,' and 'extract_num' to read DI data into a
MatLab array. The two files 'nano3read' and 'getparameter' are the original
copyrighted source code for each of the files as indicated. get_image_data Calculating Friction vs Load: The most important script to
analyze your FvL data is 'friction_v_load.' To process large batches of data,
use 'batch_process' (see the manual). File 'latcal' is a Mathcad file that
uses the output of the Lateral Calibration function of 'friction_v_load' to
find the ratio between normal and lateral calibration factors. friction_v_load Measuring Pull-Off Forces: The following files are
applicable to force-distance data files only. The output of 'getfd' is the
pull-off force in volts and the slope of the contact region of a force curve
(normal signal deflection sensitivity in volts per nm). Update April 7, 2005:
batchfd no longer requires getfd to run (or commenting/uncommenting of
getfd). getfd |
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Updated 3/20/06 |