Grids & membranes

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Information guide

The membranes of Silicon Nitride (Si3N4) were made using electronics grade Silicon wafers with a thin film of Si3N4 deposited to the desired thickness.

A few support & Si3N4 thicknesses are available.

The Silicon Nitride Membrane window grids from SPI Supplies are the ultimate for those working with nanoparticles and conducting in situ high temperature studies by TEM. The membrane window grids permit the researcher to observe their samples on a substrate that is 100% amorphous and is completely structureless and featureless.

Please contact us for other dimensions in Si3N4 membranes as well as SiO2 membranes.


  • packs of 10 for 200 µm and 100 µm
  • packs of 100 for 50 µm
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200 µm Thick Frames


100 µm Thick Frames


50 µm Thick Frames