Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devices (www.tomshardware.com)
from schizoidman@lemmy.ml to technology@lemmy.ml on 26 Jul 2024 11:53
https://lemmy.ml/post/18426215

#technology

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bzarb8ni@lemm.ee on 26 Jul 2024 12:05 next collapse

That’s really cool.

chirospasm@lemmy.ml on 26 Jul 2024 12:14 next collapse

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

solidgrue@lemmy.world on 26 Jul 2024 12:19 next collapse

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.

prole@beehaw.org on 26 Jul 2024 12:28 next collapse

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 on 26 Jul 2024 15:27 collapse

Crystal mommies 💀🤣💀🤣💀🤣

abcdqfr@lemmy.world on 26 Jul 2024 14:02 next collapse

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

MotoAsh@lemmy.world on 26 Jul 2024 15:02 collapse

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.

helenslunch@feddit.nl on 26 Jul 2024 14:58 next collapse

I’ve seen a whole-home wireless charger at some convention. Would be super nifty for home automation and such.

nondescripthandle@lemmy.dbzer0.com on 26 Jul 2024 15:36 next collapse

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 on 26 Jul 2024 16:48 collapse

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 on 26 Jul 2024 17:05 next collapse

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 on 26 Jul 2024 18:08 collapse

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.

Shawdow194@kbin.run on 26 Jul 2024 16:13 next collapse

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

smeeps@lemmy.mtate.me.uk on 26 Jul 2024 18:30 next collapse

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

hperrin@lemmy.world on 27 Jul 2024 01:32 next collapse

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

BellaDonna@mujico.org on 27 Jul 2024 01:54 next collapse

Uhm, how is this fundamentally different from a crystal radio? I’ve built this exact concept from a science kit, and this is a concept that’s been proven for decades.

IrritableOcelot@beehaw.org on 27 Jul 2024 02:08 collapse

It’s…not. The original press release is typically hype-y, but the part that toms hardware article really mangled is that they didnt find a way to do it, they found a new design for a device to do it.

adespoton@lemmy.ca on 27 Jul 2024 02:56 collapse

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