Music-free ver.: Optical antennas: sophisticated infrared light manipulation technology (2020/11/04)

Thank you for your patience while waiting for our revised video about optical antennas. We hope this music-free version will be favorably received.
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Have you heard of "metamaterials"? These sophisticated materials contain nano-scale patterns on their surfaces that allow us to control light.
At NIMS, we have developed a novel gas sensor that incorporates a metamaterial with a special pattern on its surface capable of emitting and absorbing infrared light at a desired wavelength.
How does it work? What can it be used for? Watch this video to find out!
Original Japanese version was published on 2020/11/04 at • 【NIMS WEEK開催！】光アンテナで赤外... ( English subtitles available)
Related video: • Watch! A clear view o...
See www.nims.go.jp...
for more information

[@franciscovessani6720]

That is surely a Nobel prize candidate

[@chrismofer]

This must be how they are generating terahertz radiation on a chip, using an even smaller pattern below the size of optical wavelengths.

[@charlesmartin1972]

The pattern would actually be larger, not smaller. The terahertz gap is that region of the electromagnetic spectrum where the wavelength is longer than infrared, but shorter than UHF

[@chrismofer]

​@@charlesmartin1972 oop you're right. I'm surprised it hasn't come up more, the highest frequency electronics I play with are around 10ghz like radar guns. Starlink satellites apparently run 27-40ghz. I'm very curious what kind of electronics it would take to generate 1000Ghz. Apparently infrared is the whole region from 300ghz to 400thz.

[@Andrew-rc3vh]

@@chrismofer The trouble is microwave and above tends to suffer from atmospheric absorption that gets worse the higher you go.

[@chrismofer]

@@Andrew-rc3vh I wonder how strong that effect is, perhaps it can still be used like an x-ray to see thru many materials, or if the effect is weak enough, could still be used to image the atmosphere to track weather etc. I'm curious how strongly water absorbs it as well, the Chinese government keeps saying they can detect subs with it.

[@Andrew-rc3vh]

@@chrismofer I can't post links, but if you do a Google image search on 'atmospheric absorption vs frequency' then the first graph that comes up is from Researchgate, and it is a plot of how strong the effect is. Notice certain frequencies have a very high absorption compared to the average. This is the quantum transitions in the atoms and molecules in the atmosphere. 2.4 GHz is especially prone to absorption via water molecules. This is why it is a free licence band. At the time they considered they could not sell it for much, and in the end it was used for microwave cooking, because the effect is what cooks the food.

[@AvaBernards]

Ya love to see a mad wizard at work

[@richardgraham1167]

Well done! Quite interesting technology.

[@Zsignal743]

So each wavelength can be encrypted nice thanks for the memo. I got my research binder on now.

[@xdsopl]

Congratulations! Next: mass production.

[@Andrew-rc3vh]

They should do them cheap so everyone will use them. It's a mistake to sell for hundreds of quid and cream off the top of the market. It slows down technological progress.

[@atomictraveller]

sensible, if you can do it. speaker seemed to really enjoy 2:45 "two desirable peaks" 😄

[@vikrantvijit1436]

Fascinating thanks 🙏👍

[@sperzieb00n]

combine this with piezoelectric materials to change the size of the pattern, and you have leds with adjustable wavelenghts

[@jagmarc]

Color display screen.

[@Gameplayer55055]

Just imagine a frequency modulated fiber internet. How cool is that. possibility of terabit capacity?

[@jagmarc]

So, effectively have replaced the dual window IR detector (along with its two narrow band IR filters), with a standard normal PIR detector but illuminated with a quantum dual wavelength IR emitter?

[@nickname3513]

Cool

[@exponentialnegative1]

LiFi is the future of short range wireless data transfer, there's no other useable frequency available with as much bandwidth

[@amitshridhar]

I need all kinds of help

[@midclock]

Interesting. It's already in production? It looks like one of these components that cost around 200.

[@PhysicsViolator]

4:03 ze svastika emitta

[@vernacular1483]

This is interesting as fuck

[@empatikokumalar8202]

amazing / tebrikler

[@ShopperPlug]

Could this tech be used for detecting thermal radiation, like a FLIR camera?

[@krzysztofozog8662]

Black Sun !!!!!!!!!!

[@arduinoguru7233]

great......

[@D4leBryant]

Cool, now develope it into a new WIFI technology that isn't plauged by interferance like the RF variety.

[@anands6887]

Is that pir sensor?

[@odissey2]

No

[@TouYubeTom]

"nontoxic sensor" - what does that mean, does it not digest

[@6AK5W-JAN]

He mentioned the previous sensor used cadmium. Cadmium is toxic and requires special disposal methods - you can't just toss it in a landfill when you're done with it.

[@VEC7ORlt]

It sounds a bit weird when translated from japanese, but the gist is correct.

[@efrandsen72]

​@@VEC7ORltI'm trying to avoid giving views to publishers who use auto (stolen) generated (slop). I was close to calling this one, but I had not considered they used ai voice to share the video to another language.

[@VEC7ORlt]

@@efrandsen72 now that is a pointless endeavor and in this case has nothing to do with ai. Even if you watch something like NHK, with professional translation those patterns of speech sometimes slip through, thate just how japanese works eometimes.

[@efrandsen72]

@@VEC7ORlt Agreed. Thanks.

[@pahom2]

4:06 "he showed ingenuity in connecting the components together to acquire clear signal" He used swastika. The signal is clear.