Abstract
A new method of measuring the adhesion strength of thin films to their substrates is reported. The method is based on an analogy with the common tensile test of materials. This is an acoustic method that uses acoustic microcavitation to bring about controlled erosion of the thin film. Based on the insonification pressure and the time to complete erosion the adhesion strength is assessed. The measurements correctly rank order a set of thin film samples of known adhesion strengths.
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