Source: National Cyber Security – Produced By Gregory Evans
Criminals with a penchant for dyeing their hair could soon pay for their vanity. Scientists at Northwestern University have found a way to analyze hair samples at crime scenes to rapidly determine whether it was colored and what brand of dye was used. Their report appears in the American Chemical Society journal Analytical Chemistry. Richard Van Duyne and Dmitry Kurouski note that analyzing hairs for forensic investigations, despite what TV shows would have you believe, can be a labor-intensive, time-consuming and flawed process. Testing samples for DNA requires an intact bulb or root, which isn’t always present. The researchers turned to surface-enhanced Raman spectroscopy with a portable Raman spectrometer. SERS can detect minute amounts of illicit drugs, explosives, gunshot residue and body fluids. With this method, the team could rapidly confirm whether hair samples, even microscopic ones, were dyed and what brand of colorant was used. This highly sensitive technique could help forensic investigators analyze hair quickly in the field, the researchers say. acs.org Study finds where ants go to ‘do their business’ Ants may use the corners of their nest as “toilets,” according to a study in the journal PLOS ONE by Tomer Czaczkes and colleagues from Germany’s University […]
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