Welcome to ImpedanceFitter’s documentation!¶
Overview¶
Impedance spectroscopy (IS) is a great tool to analyse the behaviour of an electrical circuit, to characterise the response of a sample (e.g. biological tissue), to determine the dielectric properties of a sample, and much more [Barsoukov2018].
In IS, often (complex) non-linear least squares is used for parameter estimation of equivalent circuit models. ImpedanceFitter is a software that facilitates parameter estimation for arbitrary equivalent circuit models. The equivalent circuit may comprise different standard elements or other models that have been formulated in the context of impedance spectroscopy. The unknown parameters are found by fitting the model to experimental impedance data. The underlying fitting software is LMFIT [Newville2019], which offers an interface to different optimization and curve-fitting methods going beyond standard least-squares. ImpedanceFitter allows one to build a custom equivalent circuit, fit an arbitrary amount of data sets and perform statistical analysis of the results using OpenTurns [Baudin2017].
- Barsoukov2018
Barsoukov, E., & Macdonald, J. R. (Eds.). (2018). Impedance Spectroscopy: Theory, Experiment, and Applications. (3rd ed.). Hoboken, NJ: John Wiley & Sons, Inc. https://doi.org/10.1002/9781119381860
- Newville2019
Newville, M., Otten, R., Nelson, A., Ingargiola, A., Stensitzki, T., Allan, D., Fox, A., Carter, F., Michał, Pustakhod, D., Ram, Y., Glenn, Deil, C., Stuermer, Beelen, A., Frost, O., Zobrist, N., Pasquevich, G., Hansen, A.L.R., Spillane, T., Caldwell, S., Polloreno, A., andrewhannum, Zimmermann, J., Borreguero, J., Fraine, J., deep-42-thought, Maier, B.F., Gamari, B., & Almarza, A. (2020, May 7). lmfit/lmfit-py 1.0.1 (Version 1.0.1). Zenodo. http://doi.org/10.5281/zenodo.3814709
- Baudin2017
Baudin, M., Dutfoy, A., Looss, B., & Popelin, A. L. (2017). OpenTURNS: An industrial software for uncertainty quantification in simulation. In Handbook of Uncertainty Quantification (pp. 2001–2038). https://doi.org/10.1007/978-3-319-12385-1_64