Photonic crystal electrical property indicator
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United States of America Patent
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Sep 8, 2015
Grant Date -
May 5, 2011
app pub date -
Mar 4, 2009
filing date -
Mar 5, 2008
priority date (Note) -
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Abstract
A photonic crystal electrical property indicator for a battery comprising: an electrically conductive working electrode and an electrically conductive counter electrode; an electrically-responsive photonic crystal material in contact with at least one of said first and second electrically conductive electrodes; an ionically conductive electrolyte provided between the working and counter electrodes; and electrical conductors for connecting the indicator to terminals of the battery; wherein the photonic crystal material has a reflectance spectrum that is responsive to a change in at least one electrical property of the battery, thereby providing an optically detectable indication of the at least one electrical property of the battery.
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