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A microscope cold stage
Author(s) -
Gallup A. L.,
Greenwood B.,
Wilson J. F.
Publication year - 1975
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1975.tb03907.x
Subject(s) - stage (stratigraphy) , liquid nitrogen , nitrogen gas , microscope , single stage , heat flow , materials science , nitrogen , environmental science , chemistry , optics , engineering , geology , meteorology , physics , aerospace engineering , paleontology , organic chemistry , thermal
SUMMARY This inexpensive cold stage consists of a perspex box through which cooled nitrogen gas continuously passes. The nitrogen is cooled by being piped, after drying, through liquid nitrogen. Misting is prevented by continuous gas flow, and strategically placed low‐output heating wires. The two foremost problems in the use of a cold stage are to produce adequate and rapid cooling, and to prevent misting of surfaces in the optical pathway if effective cooling is achieved. These problems have been solved in at least one commercial cold stage known to us, but at considerable expense. The stage now described solves both these problems, producing cooling of the specimen down to about — 40°C within a few minutes, and completely obviating misting. It is inexpensive, and can be made without any specialized workshop skills.