Scientists have built the tiniest antenna ever made – just five nanometers in length. Unlike its much larger counterparts we're all familiar with, this minuscule thing isn't made to transmit radio waves, but to glean the secrets of ever-changing proteins.
The nanoantenna is made from DNA, the molecules carrying genetic instructions that are around 20,000 times smaller than a human hair. It's also fluorescent, which means it uses light signals to record and report back information.
And those light signals can be used to study the movement and change of proteins in real time.
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