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Advances in Fluorescent Nanomaterials for Latent Fingerprint Visualization.

Ruochen Lu1, Wenzhao Shi1, Jinshu Liu1

  • 1School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, China.

Critical Reviews in Analytical Chemistry
|December 15, 2025
PubMed
Summary

Fluorescent nanomaterials offer advanced, sensitive, and nondestructive latent fingerprint visualization, overcoming limitations of traditional forensic science methods. This review explores quantum dots, nanoparticles, and carbon dots for enhanced fingerprint detection.

Keywords:
Dual-mode imagingfluorescent nanomaterialsforensic imaginggreen synthesislatent fingerprint visualization

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Area of Science:

  • Forensic Science
  • Materials Science
  • Chemistry

Background:

  • Traditional fingerprint visualization methods face challenges like low contrast and residue alteration.
  • There is a critical need for accurate, nondestructive, and high-sensitivity forensic techniques.
  • Fluorescent nanomaterials present a promising alternative due to their unique properties.

Purpose of the Study:

  • To review recent advancements in using fluorescent nanomaterials for latent fingerprint detection.
  • To highlight the characteristics and performance of various nanomaterials in fingerprint imaging.
  • To explore future research directions in fingerprint visualization.

Main Methods:

  • Review of literature on fluorescent nanomaterials for fingerprint analysis.
  • Categorization of nanomaterials including quantum dots, metal/metal oxide nanoparticles, inorganic nonmetals, rare-earth compounds, and carbon dots.
  • Analysis of structural properties, luminescence behavior, and imaging performance.

Main Results:

  • Fluorescent nanomaterials demonstrate superior sensitivity and contrast in fingerprint visualization.
  • Various nanomaterials exhibit effective interactions with fingerprint residues.
  • Dual-mode imaging and advanced analysis show potential for improved detection.

Conclusions:

  • Fluorescent nanomaterials significantly enhance latent fingerprint visualization in forensic science.
  • Further research into eco-friendly synthesis and advanced imaging techniques is warranted.
  • These materials offer a path towards more accurate and reliable forensic analysis.