Development of latent fingerprints using NaYF4:Er,Yb luminescent up-converter particles

ZHANG Lu, MA Rong-liang, XIE Jing, LIU Huan, WANG Ming-zhi

Forensic Science and Technology ›› 2014, Vol. 39 ›› Issue (6) : 36-38.

Development of latent fingerprints using NaYF4:Er,Yb luminescent up-converter particles

  • ZHANG Lu, MA Rong-liang, XIE Jing, LIU Huan, WANG Ming-zhi
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Abstract

Objective To introduce a new method for latent fingerprints developing by using NaYF4:Er,Yb phosphor suspension,and explore its applicable scope and conditions. Methods The sebaceous fingerprints on non-porous surfaces, including plastic, tile, glass, metal et al. were developed with NaYF4:Er,Yb phosphor suspension. Results The sebaceous fingerprints on non-porous objects with complex background were developed successfully. The effectiveness of NaYF4:Er,Yb was compared with that of traditional Zinc Oxide powder, the results indicated that some benefit of NaYF4:Er,Yb over Zinc Oxide powder for the development of latent fingerprints. Conclusions NaYF4:Er,Yb phosphor suspension is a simple and effective method for fingerprints detection, and has the great potential for development of latent fingerprints.

Key words

fingerprint development / up-converter particles / sebaceous fingerprints / fluorescence

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ZHANG Lu, MA Rong-liang, XIE Jing, LIU Huan, WANG Ming-zhi. Development of latent fingerprints using NaYF4:Er,Yb luminescent up-converter particles. Forensic Science and Technology. 2014, 39(6): 36-38

References

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