SEM

SEM is the acronym for scanning electron microscope. The SEM uses electrons to image specimens. It provides images of the surface of the silica cell wall, or frustule, while the light microscope (LM) provides images of the transparent features of the diatom.

Img 0692
Image Credit: S. Spaulding
The specimen chamber of a scanning electron microscope (SEM). Here, the Quanta FE450 at the U.S. Geological Survey in Denver, CO.

Diatoms of North America is running a fundraising campaign to keep the servers in operation. We need you to reach our $25,000 fundraising goal.

If you use and appreciate DONA, make your DONAtion today.

For the Gift Designation, type "diatom" in the search box and select "Diatom Lab Research Fund". This is the designated fund for diatoms.org.