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Tiny antenna enables portable biomedicine, food analysis, and other nano- and terahertz technologies

A Skoltech professor and his colleagues from Germany have designed a really small and flat antenna for receiving and transmitting terahertz indicators. THz waves are a band of electromagnetic radiation that holds a lot promise for functions as numerous as safety checks and wi-fi communication, most cancers screening and dentistry, and detection of meals degradation and defects in manufactured gadgets. The issue with the know-how is that THz gadgets would require miniaturization earlier than they are often extra extensively adopted. The current research in Scientific Studies makes an essential contribution to that effort.

“Today, you will find bulky THz devices in laboratory or industrial settings, in some airports, hospitals, and telescopes,” says the research’s first creator Shihab Al-Daffaie, an affiliate professor of the observe at Skoltech. “To enable new exciting applications, we need to get THz technologies out of the lab and into the hands and homes of ordinary people. And that means making them radically smaller.”

That is what Al-Daffaie and his colleagues are engaged on: bringing THz gadgets and methods to your fingertips.

“Almost 90 percent of THz devices use the bulky silicon lenses that are about 10 millimeters in diameter and 6 millimeters thick,” Al-Daffaie goes on. “There’s no way you can have a fingertip-sized device with that thing. So we found a way to get rid of it.”

The antenna introduced within the new research is simply 0.3 millimeters thick—20 occasions thinner than the cumbersome silicon lens plaguing earlier designs. “But this is more than a reduction in size,” Al-Daffaie explains. “We can plant our THz device directly on the flat antenna, seamlessly integrating it into the system. Previously, you would put the device over the lens, sort of like a device within a device—but now we have it on the same platform.”

With out sacrificing efficiency, this integration drastically reduces the quantity of optical energy required by the gadget, eliminating the necessity for enormous lasers, and allows having the transmitting antenna very near the receiving antenna. “You can put them both on the tip of a pencil,” Al-Daffaie continues, emphasizing that with prior know-how, one would as an alternative have two impartial gadgets, every of them half a meter throughout (fig. 1).

“To get an thought of how such a pencil-sized device could possibly be used, take into account biocell, liquid, or gasoline evaluation,” Al-Daffaie says. “You could use it to test milk quality, for example. You put a drop between the two antennas. The transmitter sends THz waves to the receiver, which picks up their modulation by the substance undergoing analysis—in this case milk—to infer its composition. But remember: THz radiation is also good for wireless communication, so the beauty of this setup is that this same antenna can also relay the analysis results to a smartphone or wherever it is you want them.”

Creating a non-radiating source of electromagnetism

Extra info:
Shihab Al-Daffaie et al, Design and implementation of a terahertz lens-antenna for a photonic built-in circuits primarily based THz methods, Scientific Studies (2022). DOI: 10.1038/s41598-022-05338-0

Tiny antenna allows moveable biomedicine, meals evaluation, and different nano- and terahertz applied sciences (2022, February 9)
retrieved 9 March 2022

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