Metatechnica
LASAW-NC: Laser Actuated Surface Acoustic Wave analysis

The Lasaw-NC is the only instrument in the world that can measure mechanical properties of thin-film materials in a manner that is both nondestructive and non-contact. Currently available as a stand-alone laboratory R&D instrument, it can also be developed into an inline inspection tool for the semiconductor and flat-panel display industry.

Capabilities…

How it works...

A short-duration laser pulse (1-2ns) is applied to the surface of the material to be tested. This laser pulse generates surface acoustic waves (phonon waves) of a range of frequencies that propagate laterally through the material outward from the laser pulse. The acoustic wave looses energy to the material as it propagates – disperses through the material. The velocity of the material is dependent upon the frequency of the acoustic wave. This relates to film properties in several ways. The higher the frequency of the acoustic wave, the closer to the surface the wave propagates. The mismatch between waves propagating at different frequencies at varying depths in the sample indicates the mechanical properties of both film and substrate material.

Features…

Application…

A brochure on the LASAW-NC is available.
Contract testing service is available. Please contact us for details and rates.