A team of scientists has created a unique ink to help prevent counterfeiting. Made with luminescent nanomaterials, this ink changes color when exposed to different types of light.

Researchers at the Institute of Nano Science and Technology (INST) developed the ink, which is based on rare earth materials. This allows the ink to display various colors under different light conditions. For instance, it glows blue under certain UV light, pink under another, and orange-red under near-infrared (NIR) light.

Unlike other security inks, this ink can resist changes in light, temperature, and humidity. This makes it harder to duplicate and ideal for protecting items like currency, certificates, branded goods, and medicines from counterfeiting.

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The ink was created by mixing nanomaterials into standard PVC ink and applying it with screen printing. When tested, it showed strong color changes under specific lights, proving its potential as an anti-counterfeit tool.

This new ink offers a practical way for manufacturers and consumers to verify authenticity and protect against fake products.