Sonochemically assisted hollow/solid BaTiO3:Dy3+ microspheres and their applications in effective detection of latent fingerprints and lip prints
Title: | Sonochemically assisted hollow/solid BaTiO3:Dy3+ microspheres and their applications in effective detection of latent fingerprints and lip prints |
Authors: | Dhanalakshmia, M. Nagabhushana, H. Darshan, G.P. Basavaraj, R.B. Prasad, B. Daruka |
Keywords: | Sonochemical synthesis;Latent fingerprint;Cheiloscopy;Judd-Ofelt analysis |
Issue Date: | 2017 |
Publisher: | H. : ĐHQGHN |
Abstract: | Nanostructuredmaterialsfindpotential benefits for surface-based science suchas latentfingerprints (LFPs) and lipprint detectiononporous andnon-porous surfaces. To encounter thedrawbacks viz. lowsensitivity, high background hindrance, complicated procedure and high toxicity associated with traditionalfluo-rescent powders were resolved by using hollow/solid BaTiO3:Dy3+ (1-5 mol %) microspheres. The visu-alization of LFPs stained by the optimized BaTiO3:Dy3+ (2 mol %) hollow/solid microspheres exhibits well-defined ridgepatternswithhigh sensitivity, low backgroundhindrance, high efficiency and lowtoxicity on various surfaces. The powder X-ray diffraction results revealed the body centered cubic phase of the pre-pared samples. The emission spectra exhibit intensive peaks at ~480, 575, and 637 nm, which were attributed to transitions 4F9/2 - 6HJ (J-15/2, 13/2, 11/2) of Dy3+ ions, respectively. Surface morphologies were extensively studied with different sonication times and concentrations of the used barbituric acid. The Commission International De I-Eclairage (CIE) and Correlated Color Temperature (CCT) analyses revealed that the present phosphor is highly useful for the fabrication of white light emitting diodes |
Description: | p. 22-33 |
URI: | http://repository.vnu.edu.vn/handle/VNU_123/58204 |
ISSN: | 2468-2284 |
Appears in Collections: | Advanced Materials and Devices |
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