Ultrasonic microscope

Details Ultrasonic microscope Ultrasonic microscope

1990-01-02

1991-01-22

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

G01N 2900

Patent

active

049861255

ABSTRACT:
A supersonic microscope comprises a container for containing a liquid nitrogen, and an acoustic lens housed in the container to emit a supersonic beam onto the view face of a sample. A volume-variable member is provided in the liquid so that its upper part is extended from the top surface of the liquid. When the observing of the sample, the vertical position of the member is changed for moving the top surface of the liquid nitrogen up and down so that the top surface of the liquid contacts the view face of the sample.

REFERENCES:
patent: 4646573 (1987-03-01), Stoll
patent: 4683751 (1987-08-01), Imade et al.
"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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