Forensic Applcations of Nanotechnology - A Brief Discussion

摘要

Nanotechnology for the development of modern science and technology have a significant impact, just as DNA technology for the past 50 years, the contribution of biotechnology. Many nanotechnology has been widely used in a variety of fiber (fever clothes, stain clothes), cosmetics (sunscreen, collagen), writing instruments (long-lasting ink) as well as a variety of polymer materials. In order to analyze the crime scene in the visible, but only partially identified conventional forensic tools or can not identify the new nano material evidence, or difficult sampling on traditional evidence, only destructive to analyze physical evidence, this lab to AFM non-destructive method of research as the main front entry of the sample. AFM principle of operation of nanoscale atomic force measurement between the fine probe sample using the instrument of the distance between the probe and thus presumably with the surface of the structure drawn by computer graphics and the sample surface, And enables researchers to explore the surface morphology of various samples of fine-nanometer level, and to help establish a variety of repositories. Nano-level surface analysis of the sample, Allows us to better understand the evidence of the whole picture. Currently forensic and academic research related to AFM major international instruments towards identification, fiber and hair, blood and other direction. AFM has a considerable potential for analyzing the morphology and structure of all kinds of detailed evidence, the future could become a powerful tool to aid the work of forensic trace evidence, and therefore previously been Evidence of the potential for all kinds of unconventional filing scan, more emphasis is to identify instruments with paper and ink samples and trace evidence analysis for identification of potential research paper on the sample, the closer to the general practice of traditional forensic analysis, and assist in resolving the current forensic tools or methods can not analyze the object.