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A mold is designed to create various pre-strain levels in poly(ethylene) terephthalate (PET) substrates before the deposition of TiO 2 film to imitate the deposition process on a cylindrical drum. Four pre-strain levels, namely 0%, 2%, 4%, and 6%, are used in the preparations of TiO 2 /PET specimens to investigate the effects of pre-strain on the film morphology and the stress/strain...
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