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