MAY 26, 2020 4:32 PM PDT

Creating High Security Identification

WRITTEN BY: Nouran Amin

Imagine whispering at one end of the Echo Wall in the Temple of Heaven in Beijing. Suddenly, you find that people a far will hear from 65 meters away. Such phenomena is known as the ‘whispering-gallery effect’.

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As a result, scientists have now used the concepts of the whispering-gallery effect to stop counterfeiters in their tracks and create high-security identification. Despite the current high secure methods, identity theives can learn how to duplicate high complex patterns. To prevent this from happening, a pattern must be created that is impossible to duplicate.

"Instead of using sound waves, we used light waves to follow the concave surface of micrometer-size dye particles," explains Professor Yohei Yamamoto, senior author of the study. "This creates a complex color pattern that cannot be counterfeited."

Findings were published in Materials Horizons and describes a new, impenetrable anti-counterfeiting system.

"We attained a pixel density of several million per square centimeter on our optimized microchips," says Professor Yamamoto. "We have developed a high-security, two-step optical authentication system: the micropattern itself, and the underlying pixel-by-pixel fluorescence fingerprint of the microchip."

Source: Science Daily

About the Author
  • Nouran earned her BS and MS in Biology at IUPUI and currently shares her love of science by teaching. She enjoys writing on various topics as well including science & medicine, global health, and conservation biology. She hopes through her writing she can make science more engaging and communicable to the general public.
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