Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devices (www.tomshardware.com)

submitted 3 months ago by schizoidman@lemmy.ml to c/technology@lemmy.ml

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[-] solidgrue@lemmy.world 54 points 3 months ago

This just in, scientists unveil "a loop of wire"

I keed, I keed. Glad to see materials science improving technologies we have for new applications.

[-] chirospasm@lemmy.ml 37 points 3 months ago

Tesla, himself, is giving a gentle thumbs up from his grave.

[-] prole@beehaw.org 9 points 3 months ago* (last edited 3 months ago)

Ooooohhh can't wait to see the idiotic conspiracy theories about this...

Also, just more shit for crystal mommies with no scientific literacy to use to try to explain "energy" to me.

[-] c0smokram3r@midwest.social 4 points 3 months ago

Crystal mommies 💀🤣💀🤣💀🤣

[-] nondescripthandle@lemmy.dbzer0.com 8 points 3 months ago

Isn't this similar to principle behind The Great Seal Bug? I thought we knew blasting RF at a specific receiver can create energy.

[-] qjkxbmwvz@startrek.website 8 points 3 months ago

Yeah, you can also find "crystal radio" kits

radio receivers that use only the received RF to produce sound (no external power source).

[-] nondescripthandle@lemmy.dbzer0.com 4 points 3 months ago

The article talks a lot about their rectifier and im guessing that's where the 'breakthrough' is, but still I feel this is like too many of these articles where its a lot of hype for a little progress.

[-] sonori@beehaw.org 3 points 3 months ago

This is also how passive RFID tags work, the tag harvests just enough energy from the scanning frequency to boot up a microchip and respond with its ID number.

[-] hperrin@lemmy.world 7 points 3 months ago

Cool, I can charge my car in just 2,680,000 years.

[-] adespoton@lemmy.ca 4 points 3 months ago

Did they discover it in online news articles from 6 years ago?

[-] bzarb8ni@lemm.ee 3 points 3 months ago

That's really cool.

[-] smeeps@lemmy.mtate.me.uk 3 points 3 months ago

Wonder if this can be used to power ZigBee smart sensors. My current battery ones last about 2 years on a coin cell

[-] abcdqfr@lemmy.world 2 points 3 months ago

Do you need to hazardously close to a tower for good stability? Fascinating for the future of wireless power!

[-] MotoAsh@lemmy.world 5 points 3 months ago

It's almost certainly going to be milliamps or microamps unless you're inches from something. This isn't for cellphones and the like but for remote sensors and the like. I also bet they'll at least have to have a capacitor to store up extra charge for chirping back only sometimes.

[-] Shawdow194@kbin.run 2 points 3 months ago

https://radiojayallen.com/degen-tg39-passive-am-loop/

this post was submitted on 26 Jul 2024

82 points (92.7% liked)

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