Silver Nanowire-Studded Currency Would Be Almost Impossible to Counterfeit
21st March 2014
South Korean researchers have discovered a way to make items like credit cards and bills nearly impossible to replicate: Attach a small tag sprinkled with carbon nanotubes that acts as a totally unique fingerprint.
“Compared to other anti-counterfeit methods, the fingerprints are cheap and simple to produce, they are extremely difficult to replicate and can be authenticated very straightforwardly,” lead author Hyotcherl Ihee said in a release. His team, which is composed of scientists from the Korea Advanced Institute of Science and Technology and Institute for Basic Science, published their work today in Nanotechnology.