摘要:
Authentication systems, apparatus, and methods authenticate an identification marking including a nanocrystalline material. One or more properties of the marking are ascertained to provide a measured profile. The measured profile is compared to at least one member of a closed set of reference profiles. Each reference profile has predetermined values of one or more properties. Each reference profile is unique within the set. At least one reference profile is characteristic of an indicator material in a nanocrystalline morphology and non-characteristic of the same indicator material in a bulk morphology.
摘要:
Phosphor compositions are disclosed comprised of a BaGd.sub.2 O.sub.4 host which is activated by at least one of Tb and Sm. These phosphors are useful as storage phosphors. An imaging plate utilizing these phosphors is also disclosed.
摘要翻译:公开了由BaGd 2 O 4主体组成的荧光体组合物,其由Tb和Sm中的至少一种活化。 这些荧光体可用作储存荧光体。 还公开了利用这些荧光体的成像板。
摘要:
An x-ray intensifying screen is disclosed containing magnesium tantalum niobium oxide as a phosphor in an ordered corundum crystalline form. In addition, small amounts of at least one alkali metal other than lithium can be present. Potassium, rubidium and cesium are each capable of increasing luminescence. The x-ray intensifying screens are useful in radiographic applications where it is important to reduce subject exposure to x-rays and also to create clear, sharp images.