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About: Environmental scanning electron microscope     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingyago:WikicatMicroscopesyago:Artifact100021939yago:Device103183080yago:Instrument103574816yago:Instrumentality103575240yago:Magnifier103709206yago:Microscope103760671yago:Object100002684yago:PhysicalEntity100001930yago:ScientificInstrument104147495yago:Whole100003553 New Facet based on Instances of this Class

The environmental scanning electron microscope (ESEM) is a scanning electron microscope (SEM) that allows for the option of collecting electron micrographs of specimens that are wet, uncoated, or both by allowing for a gaseous environment in the specimen chamber. Although there were earlier successes at viewing wet specimens in internal chambers in modified SEMs, the ESEM with its specialized electron detectors (rather than the standard Everhart-Thornley detector) and its differential pumping systems, to allow for the transfer of the electron beam from the high vacuum in the gun area to the high pressure attainable in its specimen chamber, make it a complete and unique instrument designed for the purpose of imaging specimens in their natural state. The instrument was designed originally by