Selective targeting of fingermarks using immunogenic techniques

“…The fingerprints detecting on various surfaces by NIR‐meditated luminescent imaging demonstrated great advantages to conventional UV luminescent imaging by means of fluorescent dyes or quantum dots. This should be attributed to the low background fluorescence of NIR excitation, which greatly improves the detection sensitivity, especially on some problematic surfaces . Furthermore, this strategy was also useful in detecting fingerprints with cocaine powder by using UCNPs functionalized with a cocaine‐binding aptamer.…”

Section: Effects Of Polymers In Synthesis and Surface Modification Ofmentioning

confidence: 99%

Synthesis and Application of Nanohybrids Based on Upconverting Nanoparticles and Polymers

Cheng

Lin

2015

Macromol. Rapid Commun.

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Lanthanide-doped upconversion nanoparticles (UCNPs) have been an emerging and exciting research field in recent years due to their unique luminescent properties of converting near-infrared light to shorter wavelength radiation. UCNPs offer excellent prospects in luminescent labeling, displays, bioimaging, bioassays, drug delivery, sensors, and anticounterfeiting applications. Along with the abundant studies and rapid progress in this area, UCNPs are promising to be a new class of luminescent probe owing to their special advantages over the conventional organic dyes and quantum dots. Among them, polymers play an important role to improve properties or endow new function of UCNPs such as for matrix materials, water solubility, linking active targeting molecules, biocompatibility, and stimuli-responsive behavior. This article briefly reviews the compositions, optical mechanisms, architectures of upconversion nanocrystals and highlights the works on various functional UCNPs/polymer nanohybrids as well as many new interesting fruits in applications.

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“…Fingerprints have long been utilized as one of the most useful types of physical evidence and have found wide applications in areas such as forensic investigations, access control, and medical diagnostics. [1] Some fingerprints are visible if the fingers are contaminated with blood or paint, and latent fingerprints are invisible to the bare eye. [2] The basic principle of latent-fingerprint detection is the generation of an optical contrast between the ridges of the fingerprint and the affected surface.…”

mentioning

confidence: 99%

Near‐Infrared‐Light‐Mediated Imaging of Latent Fingerprints based on Molecular Recognition

et al. 2014

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Photoluminescence is one of the most sensitive techniques for fingerprint detection, but it also suffers from background fluorescence and selectivity at the expense of generality. The method described herein integrates the advantages of near-infrared-light-mediated imaging and molecular recognition. In principle, upconversion nanoparticles (UCNPs) functionalized with a lysozyme-binding aptamer were used to detect fingerprints through recognizing lysozyme in the fingerprint ridges. UCNPs possess the ability to suppress background fluorescence and make it possible for fingerprint imaging on problematic surfaces. Lysozyme, a universal compound in fingerprints, was chosen as the target, thus simultaneously meeting the selectivity and generality criteria in photoluminescence approaches. Fingerprints on different surfaces and from different people were detected successfully. This strategy was used to detect fingerprints with cocaine powder by using UCNPs functionalized with a cocaine-binding aptamer.

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Selective targeting of fingermarks using immunogenic techniques

Cited by 36 publications

References 47 publications

Advances in the development and component recognition of latent fingerprints

Advances in the development and component recognition of latent fingerprints

Synthesis and Application of Nanohybrids Based on Upconverting Nanoparticles and Polymers

Near‐Infrared‐Light‐Mediated Imaging of Latent Fingerprints based on Molecular Recognition

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