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Interferometer Helps Produce Reliable Touchpad Films

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R. Winn Hardin

Acheson Colloids Co. has produced screen-printed conductive films used in touchpad keyboards such as those on computers, automated teller machines, cellular phones and microwave ovens. But when a giant supplier of electrical devices challenged Acheson with a higher standard of batch-to-batch repeatability -- and a whole new set of stringent specifications -- the company decided it had to look beyond conventional measuring techniques.Besides selecting the right conductive materials for a specific application, Acheson needed to keep close tabs on the thickness of the film. As the film changes...Read full article

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    Published: May 1997
    Accent on ApplicationsApplicationsMicroscopy

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