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| 荧光素-纳米氧化物复合材料对潜在指纹的荧光成像 |
| Fluorescent Images of Latent Fingerprints Using Fluorescein-Nano Oxide Composites |
| 投稿时间：2026-03-25 修订日期：2026-05-07 |
| DOI： |
| 中文关键词: 固态荧光 潜在指纹 纳米复合材料 成像 |
| 英文关键词:Fluorescence in Solid-State Latent Fingerprints Nanocomposites Imaging |
| 基金项目: |
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| 摘要点击次数: 31 |
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| 中文摘要: |
| 本文通过吸附法,将荧光素(F)吸附到纳米氧化物颗粒 (如纳米氧化铝(nAl2O3),纳米二氧化锆(nZrO2)和纳米二氧化硅(nSiO2)) 上,制备了三种具有绿色荧光的纳米复合材料,经比较nSiO2是F掺杂的良好载体,F-nSiO2呈现出明亮的绿色荧光。F-nSiO2能够选择性地吸附在潜指纹(LFPs)的脊线上,而非犁沟部分,从而在紫外光激发下显示出高对比度的LFPs图像,LFPs脊线上的二级和三级细节特征均能被清晰地辨识；F-nSiO2可以清晰地识别不同基材(包括铝箔、载玻片、不锈钢板、铜箔、陶瓷瓷砖、光盘、银行卡、包装物和打印纸)表面上LFPs脊线高级细节特征。陈旧LFPs的高级细节特征也能被F-nSiO2清晰地识别。这些表明F-nSiO2作为荧光粉在刑事调查中LFPs显影具有潜力。 |
| 英文摘要: |
| Three green-fluorescent nanocomposites by adsorbing fluorescein (F) onto nano-oxide particles (such as nano-alumina (nAl2O3), nano-zirconia (nZrO2), and nano-silica (nSiO2)) were prepared via batch adsorption method. After comparison, nSiO2 is a good carrier for F doping, and F-nSiO2 exhibits bright green fluorescence. F-nSiO2 can selectively adsorb on the ridges of latent fingerprints (LFPs), rather than on the furrows, thus displaying LFPs images under UV excitation with high contrast. Both secondary and tertiary detail features on the LFPs ridges on the aluminum foil can be clearly identified by the F-nSiO2. The ridge feature details of LFPs on different substrates (such as glass slides, stainless steel plates, copper foils, ceramic tiles, optical discs, bank cards, packaging materials, and printing paper) can be also clearly identified. The detailed features of the aged LFPs can be clearly recognized by the F-nSiO2. These indicate that the F-nSiO2 has potential as a fluorescent powder for LFPs imaging in criminal investigations. |
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