Scanning acoustic microscope

Details Scanning acoustic microscope Scanning acoustic microscope

1985-01-09

1986-07-01

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

G01N 2904

Patent

active

045972931

ABSTRACT:
An acoustic microscope wherein an ultrasonic beam is projected on a sample through a propagating medium by an ultrasonic transducer having a short focus, reflected acoustic waves from the sample are detected by the transducer, and a microscopic image of the sample is obtained by scanning the sample mechanically in two dimensions, comprises a cover member which is interposed between the sample and the propagating medium and which has an acoustic impedance higher than those of the two. The intensity of a reflection signal depends upon multipath reflection within the cover member, and an intense reflection signal is obtained even for a sample which differs slightly in the acoustic impedance from the propagating medium.

REFERENCES:
patent: 4205686 (1980-06-01), Harris et al.
patent: 4503708 (1985-03-01), Kino et al.

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