Lipophilic magnetic nanocomposite of Fe3O4@SiO2@Me for efficient visualization of latent fingerprints on various surfaces
Lipophilic magnetic nanocomposite of Fe3O4@SiO2@Me for efficient visualization of latent fingerprints on various surfaces
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DOI：
10.1007/s13738-019-01636-z
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发表时间：
2019-08-01
影响因子：
2.4
通讯作者：
Yavari, Issa
中科院分区：
文献类型：
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作者：
Mobaraki, Akbar;Hosseinzadeh, Zhila;Yavari, Issa
本研究旨在设计和制备一种新型磁性纳米粉末，作为一种准化学粉尘剂，用于在各种表面上显影潜在指纹。通过研究表面亲脂性对潜在指纹显示效果的影响，对化学指纹剂和物理指纹剂的纳米粉体性能进行了调整。为此，利用三甲氧基甲基硅烷（TMMS）修饰Fe3O4@SiO2核壳磁性纳米颗粒，获得了一种亲脂性、选择性和高效的磁性纳米粉末，用于检测lfp。各种分析技术被用来表征纳米颗粒，以表明所获得的结构和性质非常适合法医科学。最后，将Fe3O4@SiO2@Me纳米粉末制备的指纹图谱应用于多个多孔和非多孔表面。Fe3O4@SiO2@Me新型亲脂指纹纳米粉合成工艺简单，日常案件使用方便，价格低廉。
This study intends to design and prepare a new magnetic nanopowder as a quasi-chemical dusting agent for the development of latent fingerprints (LFPs) on various surfaces. Tuning of the nanopowder properties between chemical and physical fingerprint agents was performed by investigation of surface lipophilicity influence on the visualization of latent fingerprints. For this purpose, trimethoxymethylsilane (TMMS) was used to modify Fe3O4@SiO2 core-shell magnetic nanoparticles to obtain a lipophilic, selective, and efficient magnetic nanopowder for detecting LFPs. Various analytical techniques were used to characterize the nanoparticles to show that the achieved structures and properties are well-suited for forensic science. Finally, fingerprints developed using the Fe3O4@SiO2@Me nanopowder were applied on several porous and nonporous surfaces. The Fe3O4@SiO2@Me new lipophilic fingerprint nanopowder offers simple synthesis process, convenient use for routine casework and low price.