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Keywords:

  • microfabrication;
  • X-ray lithography;
  • microchannels;
  • thermally rearranged polymers;
  • microporosity
Thumbnail image of graphical abstract

Combining exceptional porous polymers with patterning techniques would enable the fabrication of a new generation of devices with superior molecular size-selective features. On page 2277, S. H. Han, P. Falcaro, and co-workers propose a microfabrication protocol based on X-ray lithography. Remarkably, the irradiation process enhances the perm-selective properties. With this protocol, it is possible to apply thermally rearranged polymer to deliver gas molecules, such as oxygen and carbon dioxide, within miniaturized devices.