WORKSTATION FOR CRYO TRANSMISSION ELECTRON MICROSCOPE

摘要

A workstation for cryogenic transmission electron microscopy. Liquid nitrogen, which is confined in a space defined by the step of a transparent cover detachably mounted on an insulated vessel, serves as a boundary layer for preventing moisture in the atmosphere from being frozen on the top of the transparent cover. Further, a height adjuster is disposed on the lower surface of a stand on which a Dewar vessel is disposed, and inclines the stand such that an installation height of the Dewar vessel is higher than that of the insulated vessel. Thereby, the liquid nitrogen cannot come into direct contact with an O- ring interposed between a holder and a holder insertion socket, and blocks of ice generated by mixture of moisture with the liquid nitrogen can be collected to one side to thus prevent contamination of the sample.