Sample mounting

The SoftiMAX STXM uses metal plate sample holders in 6 and 8 hole variants. The sample holders support TEM grids and silicon nitride membranes with an outer dimension from 3 x 3 mm2 to 5 x 5 mm2. The membrane thickness should be 50–100 nm, depending on X-ray energy. The membrane sizes should be from 0.5 x 0.5 mm2 up to 1.5 x 1.5 mm2.

The sample holders are inserted from the top into the holder. No fixtures are necessary.

Experimental data download

Data can be downloaded either using Globus, or via normal sftp. The following page contains details and instructions on how to proceed:

Available techniques at SoftiMAX

The next proposal call will open between February 14, 2022 and March 14, 2022 at 23:59 CET, and cover the beamtime period August 2022 to February 2023. SoftiMAX is not fully commissioned, yet, but we are offering additional techniques to general users during this call, as well as commissioning beamtime for the high end of the energy range:

Available forTechnique description
General UsersSTXM at absorption edges between photon energies 275 eV and 1600 eV, with spatial resolution between 22-60 nm, depending on energy range and sample properties.
General UsersPtychography at absorption edges between photon energies 700 eV and 1600 eV, with illumination spot size between 22-60 nm in focus, depending on energy range and sample properties. The Andor Zyla detector is availabe in this call.
General UsersCircularly polarized x-rays in both helicities are available in addition to the default linear horizontal polarization in STXM and Ptychography modes. Restrictions apply; Please contact beamline staff if you intend to use circular polarization.
Commissioning UsersSTXM, Ptychography and X-ray Fluorescence imaging (XRF) at absorption edges between 1.6-2.5 keV, with illumination spot size of about 60 nm (resolution limit in STXM and XRF modes).

Proposals must be submitted via the MAX IV DUO system, however, we strongly encourage interested users to contact the beamline staff to discuss their experiments prior to submission.


When publishing any material arising from work carried out at MAX IV, do not forget to acknowledge MAX IV and our funders. This obligation applies to both infrastructure personnel and researchers using the infrastructure.