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Development of New Glass Phosphor for Multimodal Artifact Metrics Applicable for Ceramics

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Abstract:

Multi-modal artifact metrics, an anti-counterfeiting technique, was created based on the concept of multi-modal biometrics and can improve the certainty of authenticity and difficulty of counterfeiting as it gives more than one characteristic information to the artifact. In order to give two optical feature information (hue and emission intensity) into the ceramic products, we develop a new type of glass phosphor. This is a novel approach, since up-conversion phosphors with different color hue and emission intensity at each observation point on the material by optical excitation have never been reported. By welding a small amount of phosphor powder onto the surface of the ceramics, the certainty of authenticity and difficulty of counterfeiting would be enhanced than an existing method we proposed. Based on our experiment, we found appropriate blending ratio of two types of rare earth oxides for making glass phosphor with above-mentioned emission characteristics. These characteristics could be seen in other glass phosphor created by different base material glass with same blending ratio.

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Periodical:

Materials Science Forum (Volume 940)

Pages:

109-113

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.940.109

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Online since:

December 2018

Authors:

Masaki Fujikawa*, Mariko Hara, Shingo Fuchi

Keywords:

Anti-Clone, Authenticity, Ceramics, Glass Phosphor, Optical Excitation

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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References

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