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Pastimes : The New Qualcomm - write what you like thread.

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From: waitwatchwander	1/12/2022 3:56:41 PM
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Scientists Built The World's Tiniest Antenna, And It's Made Out of DNA DAVID NIELD 12 JANUARY 2022 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. Part of the innovation with this particular antenna is the way in which the receiver part of it is also used to sense the molecular surface of the protein it's studying. That results in a distinct signal when the protein is fulfilling its biological function. "Like a two-way radio that can both receive and transmit radio waves, the fluorescent nanoantenna receives light in one color, or wavelength, and depending on the protein movement it senses, then transmits light back in another color, which we can detect," says chemist Alexis Vallée-Bélisle, from the Université de Montréal (UdeM) in Canada. More at: sciencealert.com

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