OSA's Digital Library

Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 11 — Aug. 25, 2010

Evaluating and identifying pearls and their nuclei by using optical coherence tomography

Myeong Jin Ju, Sang Jin Lee, Eun Jung Min, Yuri Kim, Hae Yeon Kim, and Byeong Ha Lee  »View Author Affiliations


Optics Express, Vol. 18, Issue 13, pp. 13468-13477 (2010)
http://dx.doi.org/10.1364/OE.18.013468


View Full Text Article

Enhanced HTML    Acrobat PDF (1215 KB) Open Access





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Optical coherence tomography (OCT) has been utilized to evaluate pearls including their nuclei noninvasively. By visualizing the internal structure of a pearl, we could measure the thickness of its nacre layer, observe the fine sub-structure of the nacre, and inspect the nucleus through the nacre. The system also allowed us to classify pearls into beaded- and non-beaded ones; usually, the saltwater ones have nuclei even though there are beaded freshwater pears and non-beaded saltwater pearls. Any cracks, crevices, or blemishes not only in the nacre but in the nucleus of a pearl could be clearly visualized. The OCT system was based on a 20 kHz swept-source of a 1.31μm central wavelength and an 110 nm full-width-at-half-maximum (FWHM) bandwidth. To get the 2-D images all around the circumference of a pearl, the pearl was rotated by a motorized rotating stage. And to achieve 3-D volume images, galvano-scans were made along two axes. Of all things, the OCT allowed us to check the use of a forbidden nucleus, usually made of a Giant Clam shell thus fragile, without hurting the pearl. With this modality, we believe, it would be possible evaluating pearls both in qualitative and quantitative. Comparison with the images taken with an optical microscope and X-ray radiograph gives the refractive index of pearl as about 1.53 in average.

© 2010 OSA

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.2960) Imaging systems : Image analysis
(110.4500) Imaging systems : Optical coherence tomography
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(160.4890) Materials : Organic materials

ToC Category:
Imaging Systems

History
Original Manuscript: April 5, 2010
Revised Manuscript: May 24, 2010
Manuscript Accepted: June 3, 2010
Published: June 8, 2010

Virtual Issues
Vol. 5, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Myeong Jin Ju, Sang Jin Lee, Eun Jung Min, Yuri Kim, Hae Yeon Kim, and Byeong Ha Lee, "Evaluating and identifying pearls and their nuclei by using optical coherence tomography," Opt. Express 18, 13468-13477 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-18-13-13468


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. R. Y. Park, Y. C. Kim, and P. C. Kim, “The comparative analyses of akoya pearls using the bio-bead nucleus and bead nucleus made from washboard shell,” J. Korean Gems and Jewelry 1, 23–25 (2007).
  2. J. Y. Kim, Korea Pearl Laboratory, 141–1 Bongik-dong, Jongno-gu, Seoul 110–390, Korea (personal communication, 2009).
  3. H. C. Song, G. Xiang, L. Su, and Y. Fan, “Fluorescence spectrum analysis of freshwater pipless pearl,” J. Fishery Sci. China 5, 1–5 (1998).
  4. Zh. Song, Xh. Yu, and Xh. Zhang, “Analysis on various factors influencing the quality of cultured pearl,” J. Gemol. 3, 18–21 (2001).
  5. G. S. Zhang, X. D. Xie, S. Q. Qi, and P. C. Hu, “X-ray diffraction study of nacre in shell of hyriopsis cumingii (LEA),” J. Miner. Petrol. 22, 8–11 (2002).
  6. U. Wehrmeister, H. Goetz, D. E. Jacob, A. Soldati, W. Xu, H. Duschner, and W. Hofmeister, “Visualization of the internal structures of cultured pearls by computerized X-ray microtomography,” J. Geol. 31, 15–21 (2008).
  7. N. Zeng, Y. He, and H. Ma, “Application of optical coherence tomography in nacre identification and characterization,” Microw. Opt. Technol. Lett. 50(2), 442–445 (2008). [CrossRef]
  8. D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, “Optical coherence tomography,” Science 254(5035), 1178–1181 (1991). [CrossRef] [PubMed]
  9. Y. Yasuno, V. D. Madjarova, S. Makita, M. Akiba, A. Morosawa, C. Chong, T. Sakai, K.-P. Chan, M. Itoh, and T. Yatagai, “Three-dimensional and high-speed swept-source optical coherence tomography for in vivo investigation of human anterior eye segments,” Opt. Express 13(26), 10652–10664 (2005), http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-26-10652 . [CrossRef] [PubMed]
  10. K. Wada, “Science of the pearl; formation and grading,” 2nd ed., publish a newspaper of pearl, Japan, 254–255 (1999).
  11. http://www.cites.org/eng/resources/pub/checklist08/Checklist.pdf
  12. http://www.iucnredlist.org/apps/redlist/details/22137/0
  13. http://www.pearl-guide.com/forum/cultured-pearls/20-illegal-use-giant-clam-nuclei.html
  14. K. T. Wada and A. Komaru, “Color and weight of pearl produced by grafting the mantle tissue from a selected population for white shell color of the Japanese pearl oyster pinctada fucata martensii (Dunker),” Aquaculture 142(1-2), 25–32 (1996). [CrossRef]
  15. K. Wada, “The relation between the crystalline structure of the cultured pearls and elongation of the transplants mantle tissue in the process of pearl-sac formation,” Bull. Jap. Soc. Sci. Fish. 14, 549 (1960). [CrossRef]
  16. K. Wada, “Science of the pearl; formation and grading,” 2nd ed., publish a newspaper of pearl, Japan, 248 (1999).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Supplementary Material


» Media 1: MPG (1714 KB)     
» Media 2: MPG (1833 KB)     

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited