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Evaluation of a drop-on-demand micro-dispensing system for development of artificial fingerprints

机译:评估用于人工指纹开发的按需滴液微分配系统

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摘要

Precision micro-dispensing is an evolving technique that has many applications in the scientific and additive manufacturing communities. Here we describe a method for dispensing viscous materials, including the oily substance found in human fingerprints, known as sebum. In this work, a dispense jet system was used to deposit known amounts of sebum onto surfaces to represent an artificial human fingerprint. Ultraviolet-visible spectrophotometry (UV-Vis) and microgravimetry were used to verify the sebum mass loadings of the samples. The dispense jet was capable of printing a viscous sebum mixture as well as a less viscous solution of sebum dissolved in heptane. This method was; shown to be repeatable, and UV-Vis was found to be a simple and useful technique for verifying the mass of sebum deposited. This method could be used to prepare artificial fingerprint samples for a. variety of applications including the preparation of test materials for emerging trace detection technologies.
机译:精密微点胶是一项不断发展的技术,在科学和增材制造领域具有许多应用。在这里,我们描述了一种分配粘性材料的方法,这些材料包括人类指纹中发现的皮脂等油性物质。在这项工作中,使用了一种分配喷射系统将已知数量的皮脂沉积在表面上,以代表人造人类指纹。紫外可见分光光度法(UV-Vis)和微重力法用于验证样品的皮脂质量负荷。该分配喷嘴能够印刷粘性的皮脂混合物以及溶解在庚烷中的粘性较小的皮脂溶液。这种方法是;皮脂被证明是可重复的,而紫外线可见被发现是一种简单而有用的技术,可用来检验皮脂沉积的质量。该方法可用于制备人工指纹样品。多种应用,包括为新兴的痕量检测技术准备测试材料。

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