Thursday February 03, 2011
Fingered:
Getting Fingerprints From Clothing
It has been virtually impossible to get fingerprints from clothing until now.
Researchers have found a way to reveal prints using gold vapour.
From Gizmag:
The researchers used a method known as vacuum metal deposition that's already been used to recover print detail on smooth surfaces like carrier bags, plastics and glass since the 1970s, but has not previously been applied to fingerprint detection on fabrics.
The fabric is placed in a vacuum chamber. Gold is heated and evaporated and spread in a fine layer over the fabric. Heated zinc is then applied, which attaches to the gold layer where the fabric has no fingerprints, leaving the original fabric to show through where contact has been made.
Posted in: Science by bubblejam at 07:26 PM | Comments (0) | Email This Entry