Study on the Novel Photoluminescence Powder Synthesized from Zinc Carbonate Nanoparticles Associated with Fluorescein Dye for its Latent Fingerprint Detection | Chapter 2 | New Innovations in Chemistry and Biochemistry Vol. 1

 Fingerprint verification at a crime scene is a basic procedure, but it is critical that the criminal be identified. When fluorescent powder is used in passive fingerprint authentication, the accuracy of fingerprint detection for identification improves. The new fingerprint powder was created utilising a solvothermal process using zinc carbonate and fluorescein dye as the major precursors and ethanol as the solvent in this investigation. Various diagnostic equipment are used to inspect the synthetic fluorescent powder for experimental properties. SEM was used to detect a micro texture, UV-vis diffuse reflectance spectroscopy (DRS) was used to examine the notation characteristics, and UV light at wavelengths of 254 nm and 366 nm was used to examine the notation characteristics. Swiping a latent fingerprint across the surface of the synthetic fingerprint fluorescent powder is used to test it. There are several sorts of textures, including glass, metal, plastic, and ceramics, as well as the look of smooth, curve, and rough surfaces, that may be studied to determine the best circumstances for fingerprint identification. The trial has also looked into the impact of retention duration and temperature on the fingerprints that have been examined. The inspection of synthetic fluorescent powder can be employed on any surface of various types with a pleasant surface appearance. It can be used to detect fingerprints with a clear overlap and has a long retention time of more than 30 days at room temperature and more than 15 days at 90oC. This research shows that synthetic fluorescent powder has a good performance and has a high potential for use in forensic processes to detect passive fingerprints as an object witness.

Author (S) Details

Kongsak Pattarith
Department of Chemistry, Faculty of Science, Buriram Rajabhat University, Buriram 31000, Thailand.

Rachadaporn Benchawattananon
Integrated Science, Forensic Science Division, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand.

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