Security Ink Based on Nano-materials to Combat Counterfeiting

Recently, Indian scientists have developed a highly stable and non-toxic security ink from nano-materials that spontaneously emit light (luminescent) due to its unique chemical properties to combat counterfeiting of various types.

Existing Method to Combat Counterfeiting

• Luminescent Ink: Luminescent ink is generally used as covert tags to combat the counterfeiting.
• Downshifting: Most of the security inks available today are based on luminescent materials that absorb a high energy photon and emit low energy photon, technically called downshifting, where covert tag is invisible under daylight, and it becomes visible under UV light.
• Prone to Replication: These single emission-based tags are ....