Novel organic-inorganic hybrid powder SrGaO:Mn-ethyl cellulose for efficient latent fingerprint recognition: Via time-gated fluorescence
RSC Advances, ISSN: 2046-2069, Vol: 10, Issue: 14, Page: 8233-8243
2020
- 17Citations
- 15Captures
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Article Description
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, SrGaO:Mn (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, and alkaline environments. In addition, 60 day-aged LFPs were successfully visualized by the powder. All performances showed that this strategy for LFP recognition has merits such as low cost, non-destructive nature, reliability, superior universality, and legible details. Together, these results show the great application prospects of this powder in forensic identification and criminal investigation.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85080912731&origin=inward; http://dx.doi.org/10.1039/d0ra00138d; http://www.ncbi.nlm.nih.gov/pubmed/35497857; https://xlink.rsc.org/?DOI=D0RA00138D; https://dx.doi.org/10.1039/d0ra00138d; https://pubs.rsc.org/en/content/articlelanding/2020/ra/d0ra00138d
Royal Society of Chemistry (RSC)
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