Acoustic microscopy: Progress and applications, 1977

Rubber-coupled Acoustic Microscopy for Industrial Applications

This paper reports the rubber-coupled acoustic microscopy technique for cyclic inspection of industrial products in dry manner. Four kinds of rubber membranes are fabricated, and the ultrasonic transmission into the acrylic resin targets via the membrane/target interfaces, where the pressure of about 0.1 MPa is applied for improving the acoustic coupling at the contacting interfaces, is carried...

Extending Acoustic Microscopy for Comprehensive Failure Analysis Applications

Acoustic microscopy by atomic force microscopy

We have constructed an atomic force microscope enabling one to image the topography of a sample, and to monitor simultaneously ultrasonic surface vibrations in the MHz range. For detection of the distribution of the ultrasonic vibration amplitude, a part of the position-sensing light beam reflected from the cantilever is directed to an external knife-edge detector. Acoustic images taken on the ...

Progress in the Correlative Atomic Force Microscopy and Optical Microscopy

Atomic force microscopy (AFM) has evolved from the originally morphological imaging technique to a powerful and multifunctional technique for manipulating and detecting the interactions between molecules at nanometer resolution. However, AFM cannot provide the precise information of synchronized molecular groups and has many shortcomings in the aspects of determining the mechanism of the intera...

Acoustic Transducers and Lens Design for Acoustic Microscopy

The transducer-lens system is one major component in the performance of an acoustic microscope. The design criteria for the various types of applications of an acoustic microscope are different. For surface imaging applications, it is desired to have a small spot size and low sidelobe level. For materials characterization and subsurface imaging applications (sue~ as subsurface crack imaging), i...