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Raman Spectroscopy Peers Through Packaging

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A newly developed Raman technique can identify chemical species nondestructively beneath diffusely scattering packaging material such as plastics or tablet coatings.

JUN ZHAO, KATHERINE A. BAKEEV AND JACK ZHOU, B&W TEK LLC.

Raman spectroscopy is a well-established molecular spectroscopic technique for noninvasive and nondestructive chemical analysis. It is used to identify mostly organic materials, such as carbon nanomaterials, controlled substances and hazardous chemicals, pharmaceutical raw materials, gemstones and minerals, pigments and paintings in art works1,2,3, and diseased tissue4. The instrumentation can be portable — even handheld — and equipped with software that, together with spectral libraries, gives an identification result in less than a minute. The portability of the instrument has...Read full article

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