Journal of Science: Advanced Materials and Devices | |
Sonochemically assisted hollow/solid BaTiO3:Dy3+ microspheres and their applications in effective detection of latent fingerprints and lip prints | |
G.P. Darshan1  B. Daruka Prasad2  M. Dhanalakshmi3  R.B. Basavaraj4  H. Nagabhushana4  | |
[1] Department of Physics, Acharya Institute of Graduate Studies, Bangalore 560 107, India;Department of Physics, BMS Institute of Technology and Management, VTU, Belagavi-affiliated, Bangalore 560 064, India;Department of Physics, Govt. Science College, Bengaluru 560 001, India;Prof. C.N.R. Rao Centre for Advanced Materials, Tumkur University, Tumakuru 572103, India; | |
关键词: Sonochemical synthesis; Latent fingerprint; Cheiloscopy; Judd–Ofelt analysis; | |
DOI : 10.1016/j.jsamd.2017.02.004 | |
来源: DOAJ |
【 摘 要 】
Nanostructured materials find potential benefits for surface-based science such as latent fingerprints (LFPs) and lip print detection on porous and non-porous surfaces. To encounter the drawbacks viz. low sensitivity, high background hindrance, complicated procedure and high toxicity associated with traditional fluorescent powders were resolved by using hollow/solid BaTiO3:Dy3+ (1–5 mol %) microspheres. The visualization of LFPs stained by the optimized BaTiO3:Dy3+ (2 mol %) hollow/solid microspheres exhibits well-defined ridge patterns with high sensitivity, low background hindrance, high efficiency and low toxicity on various surfaces. The powder X-ray diffraction results revealed the body centered cubic phase of the prepared 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.
【 授权许可】
Unknown