| 1 | Multifunctional Dy(Ⅲ)doped di-calcium silicate array for boosting display and forensic applications显示文摘Latent fingerprints(LFPs) are the major physical evidences for the identification of individuals during crime spot investigation. Till date, numerous methods were followed to visualize LFPs. However, simple,accurate, and cost-effective method has wide scope in advanced forensic field. In our work, Ca_2 SiO_4:Dy^(3+)nanopowders(NPs) were fabricated via solution combustion route. The optimized sample was employed for the visualization of overlapped LFPs by the cost effective powder dusting method. The obtained results reveals the complete three levels of ridge characteristics with high sensitivity, reproducibility,selectivity, and reliability on various complex surfaces. The photoluminescence(PL) spectra consist of intense peaks at ~ 480 and 574 nm owing to ~4 F_(9/2) →~6 H_(15/2) and ~4 F_(9/2)→~6 H_(13/2) 4 f transitions of Dy3+ ions,respectively. The photometric properties confirm that the samples exhibit intense white emission with high color purity. Therefore, the prepared NPs could be a definitive choice as an advanced luminescent NPs for forensic, solid state lighting and portable FED devices. | M.Venkataravanappa R.B.Basavaraj G.P.Darshan B.Daruka Prasad S.C.Sharma P.Hema Prabha S.Ramani H.Nagabhushana | 2018 | Journal of Rare Earths2018，36，7： | 1 |
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