发明名称 |
LUMINESCENT BORATES, MATERIALS AND ARTICLES INCORPORATING SUCH BORATES, AND METHODS AND APPARATUS FOR THEIR PRODUCTION AND USE IN ARTICLE AUTHENTICATION |
摘要 |
Embodiments include luminescent materials and associated production methods. The material includes a crystal borate having a first substitutable element, neodymium substituted for the first substitutable element at a first substitution percentage of at least about 20 percent, and ytterbium substituted for the first substitutable element at a second substitution percentage. The material also may include chromium substituted for a second substitutable element. The material also may include a medium within which particles of the borate are incorporated. The medium, with the luminescent material particles, may form a security feature of an article. Embodiments of methods for identifying whether such a luminescent material is incorporated with an article include exposing a portion of the article to excitation in a chromium absorption band, and determining whether a detected emission produced by the article as a result of the excitation indicates an ytterbium emission after termination of the exposing step. |
申请公布号 |
EP2780432(A1) |
申请公布日期 |
2014.09.24 |
申请号 |
EP20120849729 |
申请日期 |
2012.11.14 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
KANE, JAMES;RAPOPORT, WILLIAM ROSS;LAU, CARSTEN |
分类号 |
C09K11/80;B42D25/00;B42D25/29;C09D11/50;G01N21/64;G07D7/12;G09F3/00 |
主分类号 |
C09K11/80 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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