Yonggyu Kwon Gim

US Patent:

58942203, Apr 13, 1999

Filed:

Feb 12, 1996

Appl. No.:

8/600168

Inventors:

Frederick Charles Wellstood - Lanham MD
Yonggyu Gim - College Park MD
Randall Christopher Black - San Diego CA
Steven M. Green - Greenbelt MD

Assignee:

University of Maryland - College Park MD

International Classification:

G01R 33035
G01R 3100
G01N 2772
G01J 500

US Classification:

324248

Abstract:

A cryogenic apparatus for microscopy of physical properties of an object including a thin, stiff, transparent substrate or window within the outer wall of the vacuum space of a dewar and a cryogenic sensor within the vacuum space and spaced very close distances to the window. This construction allows for positioning a sample for measurement outside of the vacuum space, at room temperature or higher and for microscopy of physical properties of the sample by monitoring the output from the cryogenic sensor as it is scanned along the surface of the sample.