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TEM microscope / transmission electron - JEM-1000
Jeol's JEM 1000, the ultra high voltage transmission electron microscope that has an accelerating voltage of 1000 kV and are used in universities and research institutes across the globe. Thanks to the high accelerating voltage, the wavelength of the electrons is short which is a major parameter to consider when determining the microscope resolution with the relation d = 0.65Cs0.25?0.75, in which Cs is spherical aberration coefficient and hence high resolution is obtained regardless of the gap width of the objective lens pole piece. The high power of penetration and thick specimen observation enables to provide clear images that reveal the structures of thick specimens, which is also the biggest feature of the ultra high end microscope. Usually, the specimens for the electron microscope must be very thin and the thinned samples sometime lose the quality of the bulk materials that is conventionally used as a product. But with the advantage of an ultra high voltage, a thick specimen while having a bulk nature is observable too.