IIT Guwahati Researchers Create Nanomaterial to Prevent Counterfeiting

Guwahati: Researchers at the Indian Institute of Technology Guwahati have developed an advanced light-emitting perovskite nanomaterial designed to combat the growing global threat of counterfeiting. The technology creates highly secure light-based patterns that are extremely difficult to replicate using standard printing or imaging methods. This innovation aims to protect currency, luxury goods, identity documents, and pharmaceutical products from increasingly sophisticated forgery attempts.

The team engineered these nanocrystals with a specialized double-layer coating, which ensures the material remains stable under heat and chemical exposure. By using a direct laser writing technique, the researchers created microscopic security patterns with resolutions between 10 and 40 micrometers. Because the process does not require traditional lithographic masks, it allows for the production of highly intricate and complex encoded information.

Beyond security, this breakthrough has significant potential for consumer electronics. The laser patterning method can support the development of advanced micro-LED displays used in smartphones, wearables, and augmented reality systems. This advancement underscores the role of Indian research institutions in creating practical solutions that address both authentication needs and the future of digital display technology.