Sonochemically assisted hollow/solid BaTiO3:Dy3+ microspheres and their applications in effective detection of latent fingerprints and lip prints

Journal of Science: Advanced Materials and Devices

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