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calibcant: tools for thermally calibrating AFM cantilevers

Project description

calibcant: tools for thermally calibrating AFM cantilevers

Calculates the spring constant k of a cantilever using the equipartition theorem:

1/2 k_B T = 1/2 K x^2

The analysis uses the expected power spectral density (PSD) of a damped simple harmonic oscillator to filter out noise from the measured PSD.

Installation

Packages

Gentoo

I’ve packaged calibcant for Gentoo. You need layman and my wtk overlay. Install with:

# emerge -av app-portage/layman
# layman --add wtk
# emerge -av sci-physics/calibcant

Dependencies

If you’re installing by hand or packaging calibcant for another distribution, you’ll need the following dependencies:

Package

Debian

Gentoo

Numpy

python-numpy

dev-python/numpy

Scipy

python-scipy

sci-libs/scipy

H5config

dev-python/h5config [1]

H5Py

python-h5py

dev-python/h5py

Matplotlib

python-matplotlib

dev-python/matplotlib

Nose

python-nose

dev-python/nose

FFT_tools

dev-python/FFT-tools [1]

Pypiezo

sci-libs/pypiezo [1]

You’ll also need my pyafm and stepper packages, or suitable replacements.

Installing by hand

Calibcant is available as a Git repository:

$ git clone git://tremily.us/calibcant.git

See the homepage for details. To install the checkout, run the standard:

$ python setup.py install

Usage

See the module docstrings for simple examples.

Testing

Run internal unit tests with:

$ nosetests --with-doctest --doctest-tests calibcant

Licence

This project is distributed under the GNU General Public License Version 3 or greater.

Author

W. Trevor King wking@tremily.us Copyright 2007-2012

Project details


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Source Distribution

calibcant-0.9.tar.gz (40.0 kB view hashes)

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