Abstract
A new method of measuring the mechanical strength of thin films is described. We prepare miniature arrays of four tensile specimens, each 0.25 mm wide, 1 mm long, and 2.2 μm thick, using deposition, patterning, and etching processes common to the semiconductor industry. Each array of four specimens is carried on and protected by a rectangular silicon frame. Thirty-six such specimens are produced on a single wafer. After a specimen frame is mounted, its vertical sides are severed without damaging the specimens. The load is applied by micrometers through a special tension spring. Tensile properties of a 2.2 μm thick Ti–Al–Ti film were determined.
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Read, D.T., Dally, J.W. A new method for measuring the strength and ductility of thin films. Journal of Materials Research 8, 1542–1549 (1993). https://doi.org/10.1557/JMR.1993.1542
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DOI: https://doi.org/10.1557/JMR.1993.1542