Spectroscopic OCT: Towards an effective tool for distinguishing authentic and artificial Chinese freshwater pearls
Distinguishing authentic and artificial Chinese freshwater pearls involves various tools and techniques, based primarily on visual inspection and spectroscopy. These methods are highly variable and thus not statistically reliable. This study investigates the capacity of spectroscopic optical coherence tomography (S-OCT) to classify authentic and artificial pearls in the NIR spectral range. The major advantage of S-OCT is that it allows spectroscopic measurements from within pearls, unlike traditional methods such as diffuse reflectance spectroscopy that primarily probe the surface. S-OCT spectral data was analyzed using principal component analysis (PCA) and partial least-squares discriminant analysis (PLSDA) to classify pearls. The implemented models successfully predicted pearl type and met performance metrics. The results show that S-OCT models could be used for more objective discrimination of authentic versus artificial pearls.
Duke Scholars
Altmetric Attention Stats
Dimensions Citation Stats
Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- 5102 Atomic, molecular and optical physics
- 4018 Nanotechnology
- 4009 Electronics, sensors and digital hardware
- 1007 Nanotechnology
- 0205 Optical Physics
Citation
Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- 5102 Atomic, molecular and optical physics
- 4018 Nanotechnology
- 4009 Electronics, sensors and digital hardware
- 1007 Nanotechnology
- 0205 Optical Physics