Research applications of Raman spectroscopy and Raman imaging for fingermark analysis

Raman spectroscopy and Raman imaging technology have demonstrated breakthrough capabilities in the field of fingermark analysis, ranging from chemical component analysis to morphological visualization, by virtue of the specificity of molecular vibration fingermarks and the advantages of non-destructive detection. This paper systematically summarizes the specific applications of Raman spectroscopy and Raman imaging technology in fingermark analysis. On one hand, it comprehensively reviews studies on fingermark component imaging and ridge development from four aspects: high-speed Raman imaging technology, Surface-Enhanced Raman Scattering (SERS) technology, the combined technology of fingermark transfer membranes and SERS, and the integrated technology of conventional development methods and SERS. On the other hand, from the perspective of fingermark chemical information extraction, it introduces applications in the detection of special components (e.g., toxicants, explosives, condom lubricants, and cosmetics) for population characteristic identification, as well as the analysis of conventional components and the inference of fingermark deposition time. Finally, the future development prospects of Raman spectroscopy and Raman imaging technology in fingermark analysis are prospected.