Commonly available, everyday materials as non-conventional powders for the visualization of latent fingerprints

Ramanan, Vadivel; Nirmala, Muthukumaran; Anbukumaran, Karthikeyani

doi:10.1016/j.forc.2021.100339

Cited by 33 publications

(18 citation statements)

References 51 publications

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“…Fingerprints are the tiny ridges formed during the embryological development of the volar pads of the fingers [1]. Over time, despite researchers' concerns about the uniqueness of fingerprints, they are still a prominent and popular method to distinguish individuals from one another [2].…”

Section: Introductionmentioning

confidence: 99%

“…Besides, concerning the health hazard linked with the conventional fingerprint powders, researchers highlighted the importance of non-toxic and easily available fingerprint powders [9]. Since heavy metal toxicity affects individuals' health, mercury and lead-based powder formation to detect fingerprints is the least preferred nowadays and has almost become obsolete [1]. Even researchers reported the most commonly used fingerprint powders, i.e.…”

Section: Introductionmentioning

confidence: 99%

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Untitled

2023

J. Med. Chem. Sci.

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The current study aimed to present a simple, non-toxic, inexpensive, and easyto-use fingerprint powder extracted from nail henna leaf to identify latent fingerprints on porous and non-porous surfaces. The powder dusting technique was applied in the current study by using nail henna leaves with a particle size of 60 to 200 mesh. Moreover, the current study used 101 fingerprint samples derived on ethnicity, gender, and blood type to determine fingerprint patterns. The results of the development of nail henna powder from sizes 100 and 200 mesh revealed the clear visualization of fingerprint patterns with prominent brown contrast on non-porous surfaces. Besides, the loop fingerprint patterns reflected the highest percentage based on ethnicity, gender, and blood group.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Untitled

2023

J. Med. Chem. Sci.

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“…Because an individual’s papillary ridge pattern on each finger was unique and remains unchanging from cradle to grave, they can serve as indisputable proof to prove whether a person was engaged in a given incident 30 , 31 . The concept of a "fingerprint" as a unique and permanent identifier was so deeply ingrained that it was frequently used for other means of identification 32 . FPs were divided into two types based on their visibility: latent fingerprints (LFPs) and visible FPs.…”

Section: Introductionmentioning

confidence: 99%

One material, many possibilities via enrichment of luminescence in La2Zr2O7:Tb3+ nanophosphors for forensic stimuli aided applications

Lavanya

Darshan

Malleshappa

et al. 2022

Sci Rep

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Engineering a single material with multidirectional applications is crucial for improving productivity, low cost, flexibility, least power consumption, etc. To achieve these requirements, novel design structures and high-performance materials are in urgent need. Lanthanide-doped nanophosphors have the greatest strengths and ability in order to tune their applications in various dimensions. However, applications of nanophosphor in latent fingerprints visualization, anti-counterfeiting, and luminescent gels/films are still in their infancy. This study demonstrated a simple strategy to enhance the luminescence of Tb3+ (1–11 mol %) doped La2Zr2O7 nanophosphors by conjugating various fluxes via a simple solution combustion route. The photoluminescence emission spectra reveal intense peaks at ~ 491, 546, 587, and 622 nm, which arises from 5D4 → 7FJ (J = 6, 5, 4, 3) transitions of Tb3+ ions, respectively. The highest emission intensity was achieved in the NH4Cl flux assisted nanophosphor as compared to NaBr and NH4F assisted samples. The colorimetric images of fingerprints visualized using the optimized nanophosphor on forensic related surfaces exhibit level –III ridge details, including sweat pores, the width of the ridges, bifurcation angle, and the successive distance between sweat pores, etc. These results are decisive parameters that clearly support the statement “no two persons have ever been found to have the same fingerprints”. The anti-counterfeiting security ink was formulated using optimized nanophosphor and various patterns were designed by simple screen printing and dip pen technologies. The encoded information was decrypted only under ultraviolet 254 nm light. All the designed patterns are exhibit not just what it looks/feel like and how better it works. As a synergetic contribution of enhanced luminescence of the prepared nanophosphor, the green-emissive films were fabricated, which display excellent flexibility, uniformity, and transparency in the normal and ultraviolet 254 nm light illumination. The aforementioned results revealed that the prepared NH4Cl flux-assisted La2Zr2O7: Tb3+(7 mol %) NPs are considered to be the best candidate for multi-dimensional applications.

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“…Diversos trabalhos utilizam diferentes áreas da química, como fundamento para o desenvolvimento de novas tecnologias, que vão desde novas substâncias químicas utilizadas como reveladores (Vadivel et al, 2021) até ao uso de nanomateriais, instrumentação analítica e quimiometria (Bécue et al, 2020). Durante a década de 1990, o foco das análises das impressões digitais latentes (IDLs) deixou de ser ape-Marco Antonio de Souza Brasília, v. 13, n. 8, p. 71-93 , Mar./2022 nas a busca pela autoria e novas metodologias passaram a ser estudadas e desenvolvidas com o objetivo de extrair outras informações deste vestígio, (Day et al, 2004).…”

Section: Introductionunclassified

A química instrumental e a identificação humana

Souza

2022

Rev. Bras. Cienc. Pol.

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Em ciências forenses, a impressão digital latente - IDL sempre foi uma poderosa ferramenta para se buscar a autoria de um crime. Há pouco mais de 20 anos, a instrumentação analítica é usada para se buscar outras informações desse vestígio que pudessem ser de interesse numa investigação. Estudos utilizando a espectroscopia vibracional foram capazes de demonstrar grande potencial para informar a idade de uma IDL, de promover contrastes interessantes entre a IDL e a superfície onde ela foi depositada e de fornecer, de forma qualitativa e quantitativa, informações químicas por meio da análise de substâncias endógenas e exógenas encontradas nas IDLs como drogas, metabólitos, traços de explosivos etc.

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Commonly available, everyday materials as non-conventional powders for the visualization of latent fingerprints

Cited by 33 publications

References 51 publications

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One material, many possibilities via enrichment of luminescence in La2Zr2O7:Tb3+ nanophosphors for forensic stimuli aided applications

A química instrumental e a identificação humana

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