Published online by Cambridge University Press: 22 February 2011
The tensile deformation behavior of nickel/ polyimide-thin-film / copper-thin-film structures is observed using an in situ x-ray stress analysis technique. The x-ray stress is measured in the nickel and the copper simultaneously. From the analysis, the stress/strain transfer from the nickel through the polyimide to the copper can be measured.
The effect of polyimide thickness (in the range from no polyimide to 33μm of polyimide) on the stress/strain transfer behavior is reported here.