Science
Intel Says They've Taken A Huge Leap in Wireless Power Tech
Posted by John Mahoney at 11:30 PM on August 21, 2008
Wireless power for charging gadgets has been among the more vapourous of developments we've been hearing promises of for years. While there are a few working instances of the tech on the market, its large-scale adoption still feels miles away. So the appropriate scepticism should be applied to this NY Times report claiming Intel will announce a major wireless power breakthrough today at the Intel Developers Forum, but the details do seem enticing this time around for one of the holy grails of the CE world soon becoming a bit more feasible. UPDATED: Pics of Intel's IDF demo from today have been added.
Intel's work builds on the progress MIT has made with transmitting power through resonant magnetic fields. But where the MIT team, led by Marin Soljacic, has only achieved 50% efficiency over a range of a few feet, Intel is said to have recently zapped up to 60 watts over the same distance at an efficiency of 75%, which is quite a leap forward.
Intel also is extrapolating potential uses of the tech for supercapicitors--basically giant electrochemical "batteries" that recharge almost instantly compared to Li-ion and store over a thousand times more juice than standard capacitors.
Sounds good. We'll keep you posted on any developments from IDF today. UPDATE: Intel didn't tell us anything we didn't know already in their IDF demo today, which lit a lightbulb from a distance of a few feet by passing electricity between two coils. We were assured, though, that being in the middle of the electrically charge resonant magnetic field doesn't hurt one bit.
[New York Times, Photos: John Herrman]

Comments (AU Comments · US Comments)
David Gerard
Posted August 24, 2008 7:26 AM
I'm sure it's completely safe and there's nothing to worry about! http://notnews.today.com/2008/08/23/intel-demonstrates-wireless-power-for-the-home/
Noobs-R-Us
Posted 11:56 PM 21/8/08
I wonder if this will kill your mechanical watch?
Noobs-R-Us
VideoVampire
Posted 11:53 PM 21/8/08
We all have a ton of "Wireless" gear but none of it really is without wires. If they get this stuff going we could truly get stuff that doesnt have wires, whadya know maybe we can call that stuff "Wirenot" or "Anti-wire" maybe "Wi-No" ...
VideoVampire
DisposableInterloper
Posted 11:51 PM 21/8/08
Years? Try decades. Not even Tesla got it right.
In any event, I'd rather see betavoltaics get more love than wireless power transmission. A battery-like power source that could outlast a device's usefulness is certainly one I'd love to have.
DisposableInterloper
mcdj
Posted 11:49 PM 21/8/08
"Hey Aunt Gertie, check out the new wireless electricity we installed! Just don't walk between the 2...AUNT GERTIE! STOP! AUNT GERTIE!!?? AUUUNT GERRTIEEEEE!!!!"
"Hi, 911? My Aunt just got fried in my living room"
Ding dong.
"Hi Paramedic Guys. She's on the floor, right over there. Just don't walk between the 2...PARAMEDIC GUYS! STOP! PARAMEDIC GUYS!!?? PAARAAMEDIC GUUUUYYYS!!!!
mcdj
NNTPgrip
Posted 11:43 PM 21/8/08
Sure, so I'll be able to use my Macbook all day without the cat trying to bite the ol' Magsafe, but the real question is will this fry my brain and/or groin area?
NNTPgrip
rock99rock
Posted 11:38 PM 21/8/08
Tesla what?
rock99rock
liquidsoapdispenser
Posted 11:37 PM 21/8/08
I hate wireless power. I totally screws up one of many (supposedly) faux products I've come up with.
Bring on the supercapacitor batteries, that sounds too grounded. "Giant electrochemical batteries" sure sounds exciting!
Wait..
liquidsoapdispenser
Sportyboard
Posted 11:36 PM 21/8/08
Wireless power seems to me like a straw dog that these tech companies are needlessly chasing after.
Give me an affordable laptop battery that will actually last an entire day and I'll be more than happy.
Sportyboard
Rage42
Posted 12:13 AM 22/8/08
didnt tesla do this like 80 some years ago?
Rage42
BigDogues
Posted 12:06 AM 22/8/08
@Noobs-R-Us: Watch hell, how about your pacemaker?
BigDogues
Kaveh
Posted 12:41 AM 22/8/08
@mcdj: Well played.
Kaveh
DorkRawk
Posted 12:35 AM 22/8/08
I'm glad that there are major companies (read: real money) chasing "impossible sci-fi" technologies. Sure the results we see now are underwhelming compared to their fictional counterparts, but they're steps in the right direction. Wireless power would be amazing. It would change ubiquitous computing completely.
Sure it's hard to comprehend how we would be able to walk around and receive wireless power the same way we receive wireless internet, but it's that the point of innovation?
DorkRawk
lurgy
Posted 12:31 AM 22/8/08
@trendspotter:
I think I'll pass if they start offering that ;) Bathing in a magnetic field strong enough to charge a car would probably do bad things to my reproductive capabilities, and probably fling my car keys out of the ignition...
lurgy
trendspotter
Posted 12:22 AM 22/8/08
This is something I want to see come to "plug-in" electric cars and hybrids. That way there could just be either designated parking spots or a "pad" at home that you would park on to charge the vehicle.
For the public charge spots there could be an RFID chip so that charging would only happen after verification of a charge account, and you'd get a monthly bill for your parking/charging. The charging stations could be within parking structures with solar arrays on the roof and additional renewables, like wind or hydro, supplying the rest of the juice--thus eliminating the whole coal emissions replacing gasoline emissions problem with electric cars which depend on the already overloaded (and over-coaled) grid.
trendspotter
pyleg
Posted 12:54 AM 22/8/08
I remember them saying at a CES a few years ago that they were going to be manufacturing LCOS chips for less than it takes to feed an Ethiopian village for a day.
How'd that work out?
pyleg
ljj
Posted 1:36 AM 22/8/08
Prediction:
wireless power will cause cancer
ljj
Platypus Man
Posted 1:27 AM 22/8/08
Come on guys, ThinkGeek has had this for a few years now for only $35.
[www.thinkgeek.com]
Platypus Man
stratboy
Posted 1:12 AM 22/8/08
@lurgy: Yeah, shielding my nads was the first thing that popped into my mind too.
Could be a great opportunity to market shielded boxers...
stratboy
J0hnP
Posted 1:47 AM 22/8/08
@Platypus Man: That was an April Fool's gag. I *wish* those wireless extension cords were really true! Maybe with this tech, it will be!
If this tech gets to be ubuiqutious, we won't *need* any long-running batteries. Our devices will charge themselves, anywhere and everywhere!
J0hnP
Killjoy
Posted 3:15 AM 22/8/08
I've always been a little leery of wireless charging/powering. I feel a lot more comfortable about the developing kinetic charging/powering solutions.
Killjoy
whootowl
Posted 4:18 AM 22/8/08
@Rage42: Tesla is now working on a Grand Unified Field Theory while Einstein is working on a conceptual design for wireless power. They got bored.
whootowl
dandaman247
Posted 4:03 AM 22/8/08
@trendspotter: i like your thinking...too bad there's money involved.
dandaman247
Noobs-R-Us
Posted 7:14 AM 22/8/08
@BigDogues: Perhaps we should test it first on Dick Cheney!
Noobs-R-Us
wormy3000
Posted 7:12 AM 22/8/08
yes tesla did this 80 some years ago after he invented ac power.
it doesnt hurt, it is just a magnetic field and induction coils.
wormy3000
mrchimp
Posted 7:01 AM 22/8/08
@VideoVampire: Wireless = Lesswire
mrchimp
avconsumer2
Posted 6:34 AM 22/8/08
Go ahead. Stick your head in there. It won't hurt a bit.
avconsumer2
reddingofish
Posted 6:31 AM 22/8/08
It is just another government scheme to kill us all since AIDS is taking too long.
reddingofish
tcolberg
Posted 6:27 AM 22/8/08
Maybe it doesn't hurt if you're standing between the coils if it's just you and some cotton clothes, but what if you're wearing a metal-banded watch that could be a conductor?
tcolberg
nimblesquirrel
Posted 7:37 AM 22/8/08
@DisposableInterloper:
Actually Tesla did get it right, and he demonstrated wireless power transmission as early as 1891, and the World's Fair of 1893. Tesla wanted free wireless power for the world, something that his employer, Westinghouse, wasn't interested in. There was no profit investing in free power, and that was one of the factors that lead to their split in 1897.
If Intel tries to patent this, wouldn't Tesla's work be considered prior art?
nimblesquirrel
ugar
Posted 7:57 AM 22/8/08
Supercapacitors... Anyone want to go fishing? >:-)
ugar
stonefry
Posted 8:37 AM 22/8/08
I just got cancer from looking at that picture.
stonefry
fluf
Posted 2:38 PM 22/8/08
Just the other day I was looking at my electrical extension cord and saying,
"Why isn't there a cordless version of this?"
fluf
DisposableInterloper
Posted 9:56 PM 22/8/08
@nimblesquirrel:
No, Tesla didn't get it right. Tesla coils put out way too much noise and they're too unpredictable to be of any use, and Tesla's plan to build a tower to transmit power was flawed from the beginning. Like it or not, as much of a pioneer Tesla was in the field, he didn't have as complete a knowledge of electrical phenomena as people do today.
What's being worked on right now is the means to transmit power efficiently across long distances with minimal interference and no risk to human safety. Tesla didn't accomplish that.
DisposableInterloper
Makkuro
Posted 10:13 PM 22/8/08
Forget wireless charging and uber capacitors. I want my micro nuke reactor. In my laptop. One that is the size of a AA battery, will power for 70+ years, and cause cancers in unwanted places.
Makkuro
nutbastard
Posted 3:40 AM 23/8/08
@DisposableInterloper:
"What's being worked on right now is the means to transmit power efficiently across long distances with minimal interference and no risk to human safety. Tesla didn't accomplish that."
that's debatable.
nutbastard
lpranal
Posted 4:06 AM 23/8/08
@DisposableInterloper: unpredictable, schmunpredictable. Just think about the possibilities for hillarious situations if tesla coils became household appliances. People randomly being struck dead by lightning from the fridge = pure gold.
lpranal
FiveLiters
Posted 5:25 AM 23/8/08
When I first pulled the pic up,I thought it was a giant-@ss hamster wheel,except the hamster was conspicuously absent.
Then,judging from the people in the pic,I figured it out...Intel has harnessed WHITE POWER!!!
Wait,what do you mean "that's not it"??? D'oh!
FiveLiters
DisposableInterloper
Posted 1:22 PM 23/8/08
@nutbastard:
I'll just say that there's a reason I keep you on my shit list and leave it at that.
@lpranal:
It would certainly have entertainment value, but the problem is that we don't know if the fridge would even be powered well enough or consistently enough to keep the beer cold. If the beer isn't cold, the subject won't go to fetch some, and hence won't get fried for our viewing pleasure. But then, perhaps the unpredictability of it all would make it that much more delicious and suitable as gambling fodder. It's a tricky conundrum.
DisposableInterloper
dgerard
Posted 6:03 AM 24/8/08
I'm sure wireless power is completely harmless and nothing to worry about! [notnews.today.com]
dgerard
japong
Posted 7:37 AM 22/8/08
it is better if they invent a battery that would last for months in a single charge! that would be much better than this wireless power thing and you may also end up electricuted with this thing!
japong