New self-erasing chip could be used to detect counterfeit or tampered products

A team of academics from the University of Michigan has developed self-powered and self-erasing chips that they hope could be used as an anti-counterfeit or tamper-detection system.

The new chips have been built with the help of a new material that changes its color while it temporarily stores energy.

The material consists of a three-atom-thick layer of semiconductor laid on top of a film of azobenzene molecules.

The semiconductor is known as “beyond graphene,” and has a special property that it can emit light when its molecules vibrate at certain frequencies.

When the two are combined, the azobenzene molecules pull on the “beyond graphene” semiconductor, causing it to vibrate in its special frequency range and emit light.

This reaction effectively allows academics to “write” visible messages on the chip itself.

However, azobenzene molecules also naturally shrink when in contact with ultraviolet light, such as the one found in normal sunlight,

Read More
Read More