scanning electron microscope image of a marine flagellate If you are a K-12 student and would like to have a SEM picture of your own sample, please contact Dr. Steve Barlow.

Samples in the SEM are viewed under vacuum, and must therefore be dry and coated. The EM Facility can coat your sample for you, but generally you need to dry the sample yourself. While this is easy to do for things likes insects or rocks (a dead, dry rock or bug looks pretty much like it did before drying), samples containing a lot of liquid will usually be deformed upon air-drying (does the surface of a grape look anything like the surface of a raisin? -- I don't think so). Please describe your sample for me and I'll let you know whether or not it can be viewed in the SDSU SEM, and how it should be prepared and mounted for observation.

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