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CapTIvate METAL TOUCH and thermal expansion

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Hi,

Regarding CapTIvate Metal touch.

My understanding is correct? 

If a metal overlay change its form because of thermal expansion when it locate on high temperature environment, value of capacitance will change too. Because CapTIvate+Metal overlay method measure the length between metal overlay and electrode(and it is equar to capacitance value between metal overlay and electrode).

Thanks,

Yuji


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