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The direct measurement of temperature changes within freeze‐fracture specimens during rapid quenching in liquid coolants
Author(s) -
Costello M. J.,
Corless J. M.
Publication year - 1978
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.1365-2818.1978.tb01151.x
Subject(s) - coolant , thermocouple , quenching (fluorescence) , materials science , fracture (geology) , propane , composite material , copper , liquid nitrogen , metallurgy , analytical chemistry (journal) , chemistry , thermodynamics , optics , chromatography , physics , organic chemistry , fluorescence
SUMMARY We have evaluated the cooling rates of specimens mounted in a variety of freeze‐fracture holders when plunged into a series of liquid coolants. These rates were measured using miniature thermocouples placed within the mounted specimens. The most rapid cooling rates were obtained using propane at 83 K as the coolant. When mounted on a newly devised ‘copper sandwich’ holder, specimen cooling rates in excess of 4500 K/s have been recorded. A simple guillotine‐like device for quenching freeze‐fracture specimens under reproducible conditions is presented.