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Development of a Modular Cryo-Transfer Station for the Side-Entry Transmission Electron Microscope†.

Alexander Reifsnyder1, Jordan A Hachtel2, Andrew R Lupini2

  • 1Department of Materials Science and Engineering, Fontana Laboratories Suite 2136, 140 W. 19th Avenue, Columbus, OH 43210, USA.

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada
|August 6, 2024
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Summary

Researchers developed a new modular cryo-transfer station using 3D-printed parts. This accessible and customizable cryo-transfer station maintains cryogenic temperatures for frozen vitreous samples, matching commercial models.

Keywords:
3D printingCADEELSTEMcryo-transfericeopen sourcevibrational spectroscopyvitreous

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Area of Science:

  • Cryo-electron microscopy
  • Materials science
  • Biophysics

Background:

  • Cryo-transfer stations are vital for cryo-electron microscopy sample handling.
  • Existing stations have limited compatibility with sample holder geometries and electron microscopes.
  • High cost and customization difficulties restrict accessibility for research labs.

Purpose of the Study:

  • To design and build a modular, accessible, and customizable cryo-transfer station.
  • To address limitations of existing commercial cryo-transfer stations.
  • To enable researchers with nonstandard equipment to utilize cryo-transfer technology.

Main Methods:

  • Construction of a modular cryo-transfer station using 3D-printed and off-the-shelf components.
  • Reconfiguration of the station to fit various microscopes and experimental protocols.
  • Testing the station's performance in maintaining cryogenic temperatures and sample transfer, validated by vibrational spectroscopy.

Main Results:

  • The new cryo-transfer station is built entirely from 3D-printed and readily available parts.
  • The modular design allows reconfiguration for diverse microscopes and experimental workflows.
  • Performance in maintaining cryogenic temperatures and transferring frozen vitreous samples is comparable to commercial models.
  • Vibrational spectroscopy confirmed the successful transfer of frozen vitreous samples.

Conclusions:

  • The developed modular cryo-transfer station offers a cost-effective, customizable, and accessible alternative to commercial models.
  • The open-source design promotes wider adoption and further development in the research community.
  • This innovation can significantly enhance access to cryo-transfer capabilities for researchers across various disciplines.