macTEM

Version 1.0.0 · part of the macEM suite, beside mac4DSTEM

macTEM

TEM images, spectra and diffraction, native on Apple silicon.

Open a micrograph or a spectrum image, look, measure, and export a figure, with every number traceable to the method and reference it came from.

Download for macOS

Version 1.0.0 · signed and notarized · macOS 27+ on Apple silicon

  • Apple silicon
  • Metal
  • GPL-3.0
  • Free

The workspace

The macTEM Image room: a STEM image at its calibration with a distance measurement, the rooms in the sidebar, and calibration, display, measurement and particle settings in the inspector.
The Image room on a GMS .dm4 file: the calibration read from the file, a measured distance, and the room's settings in the inspector.

Rooms

  • Image

    DM3/DM4, TIFF stacks, MRC and Velox EMD at their calibration. Contrast, distances, angles, profiles, particles.

  • FFT

    The live transform, radial profile, spot d-spacings, a masked inverse and HRTEM filters.

  • EDS

    Velox and GMS spectrum images. Auto ID, Cliff-Lorimer and zeta quantification, wt% and at% maps, regions.

  • EELS

    GMS spectrum images. t/λ maps and edge quantification with uncertainties, 383 edges across 95 elements.

  • Diffraction

    Calibrate from a ring or the file, fit rings, index spots against a standard or a CIF.

  • Results

    Every measurement in one place; CSV, MSA, PNG with scale bar, and the method as JSON.

Provenance and validation

The numerics live in the open macEM kits, each tested against the Python package the field already uses: RosettaSciIO for files, NumPy, SciPy and scikit-image for images, pymatgen for crystallography, HyperSpy and exSpy for spectroscopy. A result not yet validated against a standard is labelled so.

EELS cross sections are the generalised oscillator strengths of Segger, Guzzinati and Kohl, dft GOS v1.5.0, CC BY 4.0, bundled unchanged.

Requires
macOS 27, Apple silicon
Built on
FormatoKit, ImagoKit, DiffractoKit, SpectroKit
Runtime
Self-contained
Licence
GPL-3.0
Source
GitHub

Questions, issues, collaboration

If you work with TEM data and something here is useful, or missing, I would like to hear about it.

mail@mac4dstem.com