Cryogenic temperature gradient microscopy chamber
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United States of America Patent
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Feb 4, 1997
Grant Date -
N/A
app pub date -
Sep 23, 1994
filing date -
Sep 23, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A controlled low temperature chamber for a microscope has a vacuum chamber in a housing. The housing has a top panel and a bottom panel. A mounting in the chamber mounts a sample in a manner whereby the sample is microscopically observable. The mounting includes a base member, a pair of spaced supports extending perpendicularly from the base member and a pair of spaced platforms supported by the supports. Each of the platforms has an upper surface on which the sample rests and a spaced undersurface beneath the sample. A temperature control system maintains a specified temperature in the chamber, applies a controlled temperature gradient on the sample and moves the gradient along the sample in a controlled manner, thereby directionally solidifying and melting the sample, as desired.
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