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Stability
Failure Situation ­ Tension
ˇFindings:
ˇ Strain before (length < a ), cracks are stable.
p
p
ˇ Strain after (length > a ), cracks are unstable.
p
p
ˇ Crack generates before electrical failure.
ˇSolutions to alleviate stress:
ˇReducing the ITO thickness,
ˇUsing a high E but non-brittle substrate (reduce
Dunders' parameter),
ˇIntroducing a neutral layer.

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