Universal and one-step visualization of latent fingermarks on various surfaces using hydrophilic cellulose membrane and dye aqueous solution
Universal and one-step visualization of latent fingermarks on various surfaces using hydrophilic cellulose membrane and dye aqueous solution
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DOI：
10.1007/s11426-017-9051-5
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
Qianhui Wei;Xiaolong Li;Xin Du;Xueji Zhang;Meiqin Zhang
中科院分区：
文献类型：
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作者：
Qianhui Wei;Xiaolong Li;Xin Du;Xueji Zhang;Meiqin Zhang
通过简单地将亲水性纤维素膜与染料水溶液相结合，实现了一种用于快速可视化各种表面上的潜在指纹的高分辨率和通用方法。在这种方法中，指纹残留物的相对疏水特性使得存款能够充当“掩模”，将染料吸收过程引导到没有脊残留物的沟和裸露的纤维素膜基底的区域。在空间选择性染料吸收期间的这种效应在几秒至几分钟内产生指纹的负图案，这取决于基底的性质和指纹类型。它提供了纤维素膜表面上的潜在指纹的观察，具有用于个人识别目的的2级和3级细节的高清晰度。它还可以通过使用透明胶带高效地可视化从各种常见（玻璃，纸箱，陶瓷杯）和有问题的（钞票，人的皮肤和皮革）表面提取的潜在指纹。为了检验所提出的方法的通用性，八种不同的染料水溶液进行了测试，开发潜在的指纹，他们都提供了很好的结果，预期的。此外，该方法也易于用于老化指纹和自然指纹。成像可以通过视觉（通过染料颜色）和形貌（使用显微镜或相机）来完成。与传统方法相比，该方法具有简单、快速、非破坏性、安全、低成本、通用性强、分辨率高等优点，在个人身份验证相关领域具有良好的应用前景。
A high-resolution and universal method for the rapid visualization of latent fingermarks on a broad variety of surfaces has been achieved by simply combining hydrophilic cellulose membrane with dye aqueous solution. In this approach, the relatively hydrophobic characteristic of fingermark residue enable the deposit act as a “mask”, directing dye absorption processes to regions of both furrows without the ridge residues and bare cellulose membrane substrate. This effect during the spatially selective dye absorption generates a negative pattern of the fingermark within a few seconds to minutes depending on the properties of the substrates and fingermark types. It provides observation of latent fingermarks on cellulose membrane surface with high definition of level 2 and level 3 details used for personal identification purposes. It is also highly-efficient for visualizing the latent fingermarks lifted from various common (glass, carton, ceramic cup) and problematic (banknote, human skin and leather) surfaces by using transparent adhesive tape. To examine the generality of the proposed method, eight different kinds of dye aqueous solutions have been tested for developing latent fingermarks and they all provide very good results as expected. Moreover, this approach is easily used for aged fingermarks and natural fingermarks as well. Imaging may be accomplished visibly (by dye color) and topographically (using a microscope or a camera). This approach is a simple, rapid, non-destructive, safe, low-cost, universal and high resolution method compared with conventional approaches, so it demonstrates good potentiality in individual identity validation related applications.