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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 8 — Aug. 2, 2012

Line-scanning Raman imaging spectroscopy for detection of fingerprints

Sunan Deng, Le Liu, Zhiyi Liu, Zhiyuan Shen, Guohua Li, and Yonghong He  »View Author Affiliations


Applied Optics, Vol. 51, Issue 17, pp. 3701-3706 (2012)
http://dx.doi.org/10.1364/AO.51.003701


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Abstract

Fingerprints are the best form of personal identification for criminal investigation purposes. We present a line-scanning Raman imaging system and use it to detect fingerprints composed of β-carotene and fish oil on different substrates. Although the line-scanning Raman system has been used to map the distribution of materials such as polystyrene spheres and minerals within geological samples, this is the first time to our knowledge that the method is used in imaging fingerprints. Two Raman peaks of β-carotene (501.2, 510.3 nm) are detected and the results demonstrate that both peaks can generate excellent images with little difference between them. The system operates at a spectra resolution of about 0.4 nm and can detect β-carotene signals in petroleum ether solution with the limit of detection of 3.4×109mol/L. The results show that the line-scanning Raman imaging spectroscopy we have built has a high accuracy and can be used in the detection of latent fingerprints in the future.

© 2012 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(140.3550) Lasers and laser optics : Lasers, Raman

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 19, 2011
Revised Manuscript: May 1, 2012
Manuscript Accepted: May 3, 2012
Published: June 4, 2012

Virtual Issues
Vol. 7, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Sunan Deng, Le Liu, Zhiyi Liu, Zhiyuan Shen, Guohua Li, and Yonghong He, "Line-scanning Raman imaging spectroscopy for detection of fingerprints," Appl. Opt. 51, 3701-3706 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-51-17-3701

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