The journal of science, revealed earlier this month about intriguing improvements in 'Bullet fingerprinting technologies,' designed in the University of Manchester in a teamwork with Northamptonshire Law enforcement officials.
Doctor John Bond, from Northamptonshire Police Technological Support Unit with an Honorary Research at the Institution of Leicester's Forensic fingerprinting center, has designed in collaboration with university researchers, a technique to visualize finger prints even after the particular print appears on the surface of metal and steel after using some state of the art substances to make the visual clearer.
In an extension of work exploring forensic methods at the Unit of Chemistry, University of Manchester, new methods for recuperating fingerprints from steel surfaces have been discovered by analyst Alex Goddard, reports the publication. Previous recovery techniques of finger prints on bullets, for instance, included making use of powder snow to the substance which can actually affect the evidence.
The new method revealed by Goddard stimulates a naturally sourced process that doesn't involve placing anything to, or damaging, the evidence. "Currently," Goddard told Science journal, "fingerprint recuperation from bullets is quite low; much less than 1 %." A clear case of not being able to see the prints in the powder snow perhaps.
The new technique works by making use of humidity and heat to materials impacted by human contact, and this print is then improved to that of a much better image. The revolutionary method has also proven that elements of the perspiration deposit survive washing and cleaning of surfaces, Goddard said in the publication: "Once a finger touches the steel surface, a deposit remains behind, (and) this actually starts to react with the steel so a new image of the fingerprint can easily be made by the usage of elevated humidity and temperature, with the resultant picture transforming into a consistent feature on the surface of the steel.
Goddard's system consists of studying the chemical substance and physical connections occurring between the steel and the fingerprint sweating deposit. Making use of state-of-the-art surface imaging methods, just like an atomic force microscopic lens, nanoscale studies of fingerprinted metal samples can easily identify perfect conditions to improve the natural development of the actual fingerprint, vastly enhancing their recovery pace, states Science Daily.
Forensic Resources Limited provide footprint and finger print analysis, as well as forensic Gun and Toolmark Evaluation, and the team of specialists welcomes this most up to date progress in fingerprint recuperation.
"There are also signs that the new technique could be used when other methods have hit a brick wall, possibly as a final option," continued Goddard.
Doctor John Bond shared with Science Daily: "I am happy that this study in the Chemistry Unit is producing truly interesting and useful effects. It becomes an important part of the forensic study, and Northamptonshire Law enforcement officials are proud to be a part of the University. I am looking forward to further developments".
Published by sandeep Malik