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用于潜在指纹检测的强荧光蓝色发光LaO:Bi荧光粉

Strongly Fluorescent Blue-Emitting LaO: Bi Phosphor for Latent Fingerprint Detection.

作者信息

Douiri Hanen, Abid Marwa, Rzouga Haddada Lamia, Brini Layla, Toncelli Alessandra, Essoukri Ben Amara Najoua, Maalej Ramzi

机构信息

Laboratory of Dielectric and Photonic Materials, Faculty of Sciences of Sfax, Sfax University, Sfax 3018, Tunisia.

LATIS-Laboratory of Advanced Technology and Intelligent Systems, Higher Institute of Applied Sciences and Technology of Sousse, University of Sousse, Sousse 4011, Tunisia.

出版信息

Materials (Basel). 2024 Aug 26;17(17):4217. doi: 10.3390/ma17174217.

DOI:10.3390/ma17174217
PMID:39274607
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11395780/
Abstract

Blue-emitting bismuth-doped lanthanum oxide (LaO: Bi) with various concentrations of Bi was synthesized using the sol-gel combustion method and used for visualization of latent fingerprints (LFPs). An X-ray diffraction (XRD) study revealed the hexagonal structure of the phosphors and total incorporation of the bismuth in the LaO matrix. Field Emission Scanning Electron Microscopy (FE-SEM) and Fourier Transform Infrared Spectroscopy (FTIR) were used to study the morphology and the relative vibrations of the synthesized samples. Photoluminescence (PL) studies showed strong blue emission around 460 nm due to the P → S transition. Clear bright-blue fingerprint images were obtained with the powder dusting method on various surfaces like aluminum, compact discs, glass, wood and marble. A first evaluation of these images indicated a clear visualization of all three levels of details and a very high contrast ranging from 0.41 on marble to 0.90 on aluminum. As a further step, we used an algorithm for extracting fingerprint minutiae with which we succeeded in detecting all three levels of fingerprint details and even the most difficult ones, like open and closed pores. According to these analyses, LaO: Bi phosphor is demonstrated to be an effective blue fluorescent powder for excellent visualization of latent fingerprints.

摘要

采用溶胶 - 凝胶燃烧法合成了具有不同铋浓度的蓝色发光铋掺杂氧化镧（LaO:Bi），并将其用于潜指纹（LFP）的可视化。X射线衍射（XRD）研究揭示了磷光体的六方结构以及铋在LaO基体中的完全掺入。场发射扫描电子显微镜（FE-SEM）和傅里叶变换红外光谱（FTIR）用于研究合成样品的形态和相对振动。光致发光（PL）研究表明，由于P→S跃迁，在460 nm左右有强烈的蓝色发射。通过粉末撒粉法在铝、光盘、玻璃、木材和大理石等各种表面上获得了清晰的亮蓝色指纹图像。对这些图像的初步评估表明，所有三个细节级别都能清晰可视化，对比度非常高，从大理石上的0.41到铝上的0.90不等。作为进一步的步骤，我们使用了一种提取指纹细节特征的算法，成功检测到了所有三个指纹细节级别，甚至是最难检测的细节，如开放和封闭的毛孔。根据这些分析，LaO:Bi磷光体被证明是一种有效的蓝色荧光粉末，可用于出色地可视化潜指纹。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/d18af76ef5f5/materials-17-04217-g010a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/9256f2714bb5/materials-17-04217-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/d26fe414f70e/materials-17-04217-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/1e4bbdb65cff/materials-17-04217-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/e35b68845c71/materials-17-04217-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/abc5ede9e6b8/materials-17-04217-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/88aeeaca6894/materials-17-04217-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/d731519562a6/materials-17-04217-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/9223c6a6ac21/materials-17-04217-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/3d2a0988add1/materials-17-04217-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/d18af76ef5f5/materials-17-04217-g010a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/9256f2714bb5/materials-17-04217-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/d26fe414f70e/materials-17-04217-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/1e4bbdb65cff/materials-17-04217-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/e35b68845c71/materials-17-04217-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/abc5ede9e6b8/materials-17-04217-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/88aeeaca6894/materials-17-04217-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/d731519562a6/materials-17-04217-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/9223c6a6ac21/materials-17-04217-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/3d2a0988add1/materials-17-04217-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aefe/11395780/d18af76ef5f5/materials-17-04217-g010a.jpg

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本文引用的文献

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