Novel organic-inorganic hybrid powder SrGa₁₂O₁₉:Mn²⁺-ethyl cellulose for efficient latent fingerprint recognition via time-gated fluorescence.

ABSTRACT: Latent fingerprints (LFPs) are important evidence in crime scenes and forensic investigations, but they are invisible to the naked eye. In this work, a novel fluorescent probe was developed by integrating a narrow-band-emitting green afterglow phosphor, SrGa₁₂O₁₉:Mn²⁺ (SGO:Mn), and ethyl cellulose (EC) for the efficient visualization of LFPs. The hydrophobic interactions between the powder and lipid-rich LFPs made the ridge structures more defined and easily identifiable. The background fluorescence of the substrates was completely avoided because of the time-gated fluorescence of the afterglow phosphor. All the three levels of LFP degrees were clearly imaged due to the high sensitivity. Moreover, the SGO:Mn-EC powder was highly stable in neutral, acidic, a

SUBMITTER: Lai J 

PROVIDER: S-EPMC9049934 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature