The image on the cover of American Laboratory September is of open cell metallic foam. It was captured with a JEOL tungsten SEM. Original magnification 100×.
Image courtesy of JEOL USA, Inc. (Peabody, MA, U.S.A.). Metallic foam is a cellular structure made up of a solid metal that contains a large volume fraction of gas-filled pores. The distinguishing property of these foams is their very high porosity.
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