Gamma radiation stand-off detection, tamper detection, and authentication via resonant meta-material structures
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United States of America Patent
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Aug 27, 2019
Grant Date -
Aug 11, 2016
app pub date -
Apr 20, 2016
filing date -
Jun 20, 2012
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Abstract
Resonant meta-material structures are defined by metallic, dielectric or other materials that form nanoshells or nanomeshes that can be situated proximate to ionizing-radiation-sensitive layers so as to provide ionizing-radiation-dose-dependent optical properties. Such meta-material structures can also define aligned or periodic, semi-random, or other arrangements of nanostructures that are coupled to or include stressed layers. Detection of optical radiation from such structures is used to determine gamma radiation dose or to detect a disturbance of the nanostructure indicating tampering.
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