Available online at:fsjournal.cpu.edu.tw

Infrared microspectroscopy has been used by forensic scientists to analyze polymer. With the development of Dispersive Raman Microspectroscopy, the application of Raman to forensic analysis became more prevalent because of the complementary vibrational information to infrared. By applying both infrared and Raman microspectroscopy to forensic evidences which can reveal more molecular information from forensic evidences. Applications of these techniques in forensic laboratory have including trace evidences such as drugs, explosives, fibers, paints, pigments, inks, gunshot residues, forgeries and fakes. It has been found that infrared microspectroscopy offers a nondestructive method of fiber identification. Raman microspectroscopy is also very convenient, nondestructive and often permits any form of the sam ples with no sample preparation. This preliminary study showed that natural and manufacturered fibers can be rapidly characterized by these techniques. Raman microspectroscopy shows great potential for analysis and comparison of fiber evidences