Special Exhibitions
Picasso: The Artist's Studio
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Special Exhibitions |
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Picasso: The Artist's Studio |
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Scanning Electron Microscopy The scanning electron microscope, or SEM, is unsurpassed at generating a highly magnified, three-dimensional examination of a material's surface features. This technique provides information about the surface topography and composition of paint samples. It produces an image through a specialized microscope that uses an electron beam to scan the surface of a sample. The electrons interact with the sample in several ways, including absorption, emission, and reflection. Because the object is viewed in a beam of electrons rather than light, it appears in shades of gray, like a black and white television image. The information generated is detected and then displayed on a monitor. It is then recorded on photographic film or collected by computer. The computer display can be directly printed, plotted, or photographed. With the use of additional detectors, a scanning electron microscope can also provide information about the composition of elements in the sample and their distribution on the surface of the sample.Page 6 of 6 | On the next page: Optical Microscopy |
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