Description

SpectraFox is a free open-source solution for managing, processing, and evaluating scientific scanning probe microscopy (SPM) data-files. For example, data measured by scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS), as well as measurements by atomic force microscopy (AFM) can be evaluated more comfortable using this software.

We would appreciate your contribution to SpectraFox! Please follow us on github, to propose new features or report errors.

File Formats

Several file formats are supported right now:
SPECS Nanonis

.dat

.sxm

bias-spectroscopy, z-spectroscopy

scan images

Omicron Matrix

.*_mtrx

bias-spectroscopy, z-spectroscopy

scan images

Createc STMAFM

.VERT

.DAT

spectroscopy

scan images

Nanotec Electronica WSxM

.stp

.top, .ch1, ...

.cur

spectroscopy

scan images

Bruker AFM

.FLT

.dat

scan images

spectroscopy

Feel free to contact us with sample files to request support of a new file format (contact information on the bottom).

Functions

SpectraFox provides an easy way of browsing through a folder of recorded data. You can apply several functions and more specialized data treatment procedures to a single file, or even all files simultaneously. You can export or convert the results to other file-formats, that are compatible with scientific analysis tools, such as Origin or Mathematica. To protect you against data loss the original data-files are always kept untouched.
add or multiply scalar values or reference data sets scalar values or reference data can be added or multiplied to the measured signal to account for deviations in the measurement (e.g. by voltage dividers)
smoothing smooth noisy data using different smoothing models, such as simple adjacent average smoothing, or the more information conserving Savitzky-Golay
averaging within the same file, or between several files average a bunch of spectra to improve data quality
data normalization set certain regions of you data to one, to compare spectra recorded under different conditions
data re-gauging re-gauge spectroscopy data, which has been recorded using a lock-in amplifier to the correct physical dimensions (e.g. for dI/dV data recorded as a voltage, it gets converted back to a conductivity)
single / multiple non-linear fitting fit your data to single or multiple fit-functions simultaneously (e.g. Gaussian, Lorentian, Fano, or exponential functions), that can even be coupled together
AFM/STM force/current deconvolution in frequency modulated AFM: deconvolute the signals of frequency shift and average current into signals of the force and instantaneous current
visualization of line-scans data recorded along a line can be visualized by a color-plot to narrow the occurence of certain spectroscopic features
visualization of scan-images and spectral intensity maps recorded images, such as topography maps, are visualized in a quick preview, and the intensity of spectra can be plotted as a color-plot on top.
rich export / conversion functionality all spectroscopy files can be exported/converted to commonly used formats, ranging from csv or Origin-compatible files to Mathematica notebooks, where you can continue your data evaluation
... many more features are planed and on the way ...