By analyzing the information from the fingerprint residue at the crime scene,it is possible to infer the perpetrator's behavior trajectory and the identity information of the person leaving the trace,such as gen-der,age,health status,and exposure to certain substances or drugs.Fluorescent nanomaterials,such as quantum dots,rare earth up-conversion fluorescent nanomaterials,fluorescent small molecules,etc.,can be used to visualize latent fingerprints on various objects.Moreover,the surface of these nanomaterials can be functionalized through nano modification technology,which can further determine the types and contents of fingerprint residues,such as DNA,nicotine,explosive residues,etc.Based on this,various fluorescent nano-materials used for latent fingerprint visualization and their surface functionalization modification methods are reviewed,and the corresponding applications in detecting different latent fingerprint residues are also elucida-ted.Finally,the summary and prospect are provided on the multifunctional development trend of fluorescent nanomaterials in the field of latent fingerprint detection,which would be hoped to help improve the evidence based criminal accusation system and provide more clues and evidence for case investigation.
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