Ultrasonic microscope

Details Ultrasonic microscope Ultrasonic microscope

1990-01-02

1991-08-27

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

G01N 2900

Patent

active

050423045

ABSTRACT:
An ultrasonic microscope includes a container for containing a liquid nitrogen, and an acoustic lens housed in the container to emit an ultrasonic beam onto the view face of a sample. A sleeve is located above the container, which has a gas-tight chamber therein communicated with the container and a sample inserting opening formed in the periphery thereof. The sample inserting opening is selectively closed and opened by a gate valve. A sample rod is provided with a sample on its lower end, and may be freely movable up and down in the gas-tight chamber to a position where the sample in the container is scanned and to another position adjacent to the sample inserting opening where the sample is exchanged with a new one.

REFERENCES:
patent: 4543838 (1985-10-01), Fohler
patent: 4742717 (1988-05-01), Ichino
patent: 4920803 (1990-05-01), Karaki et al.
Acoustical Imaging, vol. 12, pp. 17-18, Plenum Press, (date unknown).
"The Journal of Acoustic Society of America"; Cryogenic Acoustic Microscopy: J. Heiserman et al, 67(5), May 1980, pp. 1629-1637.

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