Spectroscopic characterization of Er,Yb:Y2Ti2O7 phosphor for latent fingerprint detection

Luminescent nanostructures for the detection of latent fingermarks: A review

“…Another approach that has been attempted to increase photo resistance and chemical stability of the lanthanides was doping them on various nanoparticles such as aluminum (L. Liu et al, 2009;Sharma et al, 2016), yttrium (Ma et al, 2012;Marappa et al, 2018;Sobral et al, 2016;M. Wang, Li, Yang, et al, 2015), zirconium Rohini et al, 2019), tungsten , or titanium (Babu et al, 2019;Basavaraj, Darshan, et al, 2019;Gouiaa et al, 2020;Yeshodamma et al, 2019) oxides. Sharma et al (Sharma et al, 2014;Sharma et al, 2016) doped strontium aluminate (SrAl 2 O 4 ) with Eu 2+ and Dy 3+ to prepare a nanophosphor powder with longlasting afterglow (2 weeks) in a simple, inexpensive and rapid approach.…”

High-contrast multi-surface imaging of latent fingerprints using color-tunable YOF:Tb3+,Eu3+ ultrafine nanophosphors with high quantum yield

“…Lanthanide (Ln 3+ ) ions are bio-compatible and relatively non-toxic. 19 Inorganic nanophosphors, doped with Ln 3+ ions and having uniformly sized particles, can act as potential candidates for LFP detection by employing the powder dusting method. CaGdAlO 4 :Eu 3+ , 12 27 GdOF:Eu 3+ /Tb 3+ , 28 etc.…”

Fluorophores-rich natural powder from selected medicinal plants for detection latent fingerprints and cyanide

“…The only exception would be a person who had been in an accident so serious that the papillary tissue on the fingers, palms, soles of the feet, and feet were damaged because fingerprints are unique to each person, cannot be changed, are easy to verify, and leave marks on every object a person touches, they are routinely used as evidence in court and by the police. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] To detect latent fingerprints, investigators need some physical or chemical processes (water, amino acids, oils, and some other substances) to enhance the fingerprint residue because latent fingerprints cannot be seen by the naked eye. [29][30][31][32][33] Detection of latent fingerprints currently using traditional methods based on chemicals such as ninhydrin, 34 ferric oxide, 35 cyanoacrylate, 36 and DFO.…”