Using 1064 nm Dispersive Raman For Ink And Paint Classification

By Huawen Wu, Jack Qian and Lin Chandler

Raman spectroscopy is a non-invasive, highly sensitive technology that quantitatively probes and analyzes chemical compositions and structures without the need for sample preparation. In the past, this technology was not useful for forensics because most "real-world" samples have a vivid color, which can be a background emission (fluorescence) that could overwhelm Raman signals in all visible wavelengths. This issue is now resolved by BaySpec’s line of 1064 nm excitation dispersive Raman systems that offer maximum reduction in fluorescence interference. Download the application note to read about experiments that have successfully used 1064 nm dispersive Raman systems for the most complex forensic analysis in ink and paint classifications.