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NIT Durgapur Developed Nanomaterial to Detect Fingerprint

Advanced Fingerprint Test Technology: At a crime scene, forensic teams look for definite clues. These clues help to link and knit the entire event in a sequential manner which eventually helps to draw a valid conclusion and find the real culprit.

NIT Durgapur Developed Nanomaterial to Detect Fingerprint

A very important clue to identifying a person of interest in obtaining and matching fingerprints. So far various methods have been used to trace and identify fingerprints obtained at crime scenes but in these have drawbacks.

Scientists at the National Institute of Technology(NIT) Durgapur West Bengal have developed a noble and Nanomaterial which can detect a fingerprint effectively even after 50 days.

NIT Durgapur

Fingerprints can be found on practically any solid surface including the human body. Analysts classify fingerprints into three categories according to the type of surface on which they are found and whether they are visible or not?

Fingerprints on soft surfaces such as soap, wax and wet paper are likely to be three-dimensional plastic prints, those on hard surfaces are either patent or latent prints patent.

Patent or visible print are formed when blood, dirt, ink or paint is transferred from a finger or thumb to a surface. They can be found on a wide variety of services like smooth or rough porous or non-porous.

Latent or visible prints are formed when the body's natural oils and sweat on the skin are deposited onto another surface. The topologically unchanged rich pattern of human finger produces a unique fingerprint during the contact between a finger and a surface.

Nanomaterial to Detect Fingerprint

The secretions present at the surface of the skin are transferred towards the surface that leaves an impression of the ridge pattern. Therefore fingerprints represent the best reference for personal identification in forensic science due to its uniqueness and complexity of rich patterns.

Till now apart from conventional methods of dusting black on smooth or non-porous surface various optical Imaging methods have been successfully used to explore the information. However, these optical Imaging methods have some shortcomings.

To overcome all possible limitations for effective and prominent detection of fingerprints a team of scientists led by Professor Pathik Kumbhakar at the department of physics Nanoscience laboratory NIT Durgapur have developed smartphone-based latent fingerprints detection to overcome the drawbacks of traditional fingerprint detecting methods by developing novel material based on nanotechnology.