云南化工2026，Vol.53Issue(3)：37-42,6.DOI:10.3969/j.issn.1004-275X.2026.03.08
表面改性SrAl2O4:Eu2+,Dy3+荧光材料显现胶带黏面潜手印的研究
Surface-Modified SrAl2O4:Eu2+,Dy3+Phosphor for Visualization of Latent Fingerprints on Tape Adhesive Surfaces
摘要
Abstract
Latent fingerprints are frequently left at crime scenes.The visualization of latent fingerprints on adhesive tape surfaces presents a sig-nificant challenge in practical investigations due to the unique properties of the substrate.In this study,the long-afterglow luminescent materi-al SrAl2O4:Eu2+,Dy3+was coated via a sol-gel method,producing fluorescent powder modified with a silica-alumina binary film.The suc-cessful coating and enhanced water resistance of the material were confirmed through SEM,fluorescence spectroscopy,and water resistance tes-ting.The modified material was formulated into a fine-particle suspension for visualizing latent fingerprints on common adhesive tape surfaces.A comprehensive evaluation of the development performance was conducted,focusing on selectivity,contrast,sensitivity,and applicability.The results indicate that the Si-Al binary film-coated SrAl2O4:Eu2+,Dy3+suspension exhibits unique advantages in visualizing latent fingerprints on tape surfaces,outperforming traditional carbon ink staining,and effectively visualizing aged fingerprints.The long-afterglow property of the material enables high-quality fingerprint visualization by effectively eliminating background interference.关键词
手印显现/SrAl2O4:Eu2+,Dy3+悬浮液/长余辉/荧光Key words
Fingerprint Visualization/SrAl2O4:Eu2+,Dy3+Suspension/Afterglow Luminescence/Fluorescence分类
化学化工引用本文复制引用
辛翠,阳锞云,李泰丞..表面改性SrAl2O4:Eu2+,Dy3+荧光材料显现胶带黏面潜手印的研究[J].云南化工,2026,53(3):37-42,6.基金项目
湖南省教育厅科学研究项目(24C0670) （24C0670）
湖南警察学院科研项目(2024YB07). （2024YB07）
