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California teen invents device that could charge a cell phone in 20 seconds
SFGate ^ | 05/21/2013

Posted on 05/21/2013 7:24:36 PM PDT by SeekAndFind

Now here’s the invention that we’ve all been waiting for: A device that instantly charges our cell phones.

A gadget like this might soon be on its way thanks to a bright 18-year-old from Saratoga, Calif., who was recently honored at an international science fair.

Eesha Khare is the mind behind a super-powerful and tiny gizmo that packs more energy into a small space, delivers a charge more quickly, and holds that charge longer than the typical battery. Khare showed off her so-called super-capacitor last week at the Intel International Science and Engineering Fair in Phoenix, Ariz. In her demonstration, she showed it powering a light-emitting diode, or LED light, but the itty-bitty device could fit inside cell phone batteries, delivering a full charge in 20-30 seconds. It takes several hours for the average cell phone to fully charge.

Khare also pointed out that the super-capacitor “can last for 10,000 charge cycles compared to batteries which are good for only 1,000 cycles.”

Khare’s invention is flexible and could be used in roll-up devices and might even have applications for car batteries.

The judges at the science fare were wowed by Khare’s brilliant invention and the senior at Lynbrook High School in San Jose received the Intel Foundation Young Scientist Award and $50,000.

“With this money I will be able to pay for my college and also work on making scientific advancements,” Khare told a cheering audience after receiving the prize money.

(Excerpt) Read more at blog.sfgate.com ...


TOPICS: Business/Economy; Computers/Internet; Science
KEYWORDS: cellphone; charger; invention
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1 posted on 05/21/2013 7:24:36 PM PDT by SeekAndFind
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To: SeekAndFind

esha Khare is the brilliant teen behind an itty-bitty device that could supercharge cell phones

CLICK ABOVE LINK FOR THE VIDEO
2 posted on 05/21/2013 7:25:33 PM PDT by SeekAndFind
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To: SeekAndFind

She didn’t invent anything. The supercapacitor has been developing for 10 years.


3 posted on 05/21/2013 7:36:31 PM PDT by DManA
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To: SeekAndFind

Smells like BS, I have seen several people claim the same thing.

http://www.freerepublic.com/focus/f-news/2445878/posts


4 posted on 05/21/2013 7:40:25 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: SeekAndFind

She must have one hella work shop!


5 posted on 05/21/2013 7:41:35 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: DManA
The supercapacitor has been developing for 10 years.

If not longer. Here is just one example out of tens of thousands of supercaps that are available at Digikey and every other distributor.

I remember that first proposals to use supercaps as a battery replacement started at least 10 years ago. Not many are in use today. They have issues. For example, batteries tend to produce more or less stable voltage until they reach a certain discharge level. Capacitors don't do that, so you have to have wide input range switching regulators - and their range has to be wider than for Li-Ion batteries because if you want to take all the energy then you have to take voltages all the way down to zero.

6 posted on 05/21/2013 7:48:39 PM PDT by Greysard
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To: Greysard

As usual these stupid reporters don’t tell us anything. Did the girl come up with an original idea that advances the state of art? Who know?


7 posted on 05/21/2013 7:53:30 PM PDT by DManA
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To: Greysard

Another problem is quick discharge rates can lead to heat/explosions. Or one helluva jolt from a small package. Don’t put your tongue on one.


8 posted on 05/21/2013 7:53:45 PM PDT by DaxtonBrown (http://www.futurnamics.com/reid.php)
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To: Greysard

Jan 5 2010

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894167/


9 posted on 05/21/2013 7:59:35 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: SeekAndFind

This article is about as poorly written as can be. Starting with the title which claims something entirely different(and technically non-sensible). than the story. The story then gives no details that indicate that this girl invented anything that did not already exist.


10 posted on 05/21/2013 8:04:43 PM PDT by Revel
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To: SeekAndFind

We need to put her on the E-Cat


11 posted on 05/21/2013 8:39:54 PM PDT by American Guesser
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To: DaxtonBrown
Another problem is quick discharge rates can lead to heat/explosions. Or one helluva jolt from a small package.

Ah, you mentioned two other problems of supercaps.

First, many of them have ridiculously high internal resistance. This means that they are not capable of delivering high current. You can short a supercap, but the current will be limited by its internal resistance. If you use the supercap as a battery, it will be heating up. Ideal use of a supercap is a backup energy source that is drawn upon only for a fraction of a second - to park heads of a HDD, for example.

Another problem is that they are low voltage parts. This seriously constrains your options because most semiconductors do not work well at very low voltages. You cannot trivially chain several supercaps either, not without special measures to protect individual cells from overvoltage or reverse polarity. Remember the failure of a Li-Ion battery on Dreamliners this winter? One cell out of many failed and ignited the rest.

Yet another problem is that they cost more than the rest of the phone. That one supercap, just 100F * 2.5V, only holds 648 joules of energy, even if you know how to take it out of the part. It's only 0.18 watt hours; probably good for talking for about 5 minutes. But the part costs $35 in quantity! A Li-ion battery would deliver 1A for an hour at 3.6V, resulting in 3.6 watt-hours, and it will cost ten percent of that.

Supercaps are good for what they are good for; but they are not a universal solution to every problem. If they were, they'd be already used for that. Engineers of Nokia, Motorola, Ericsson and of everyone else in mobile market are not exactly incompetents who don't read trade magazines.

I have a few supercaps here on my bench. I have no use for them, so special these devices are. I bought them to use as a "power loss" backup for an SSD that I was building, but the design already went past that concept.

12 posted on 05/21/2013 8:41:20 PM PDT by Greysard
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To: Greysard

I saw one article claiming that you could use them in your cell phone AND jump start you car with it. LOL


13 posted on 05/21/2013 8:53:58 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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Even if it were possible that the device could deliver the amperage,That would be on hella USB cable!

People make the wildest claims.


14 posted on 05/21/2013 8:57:04 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: mylife

I say give her a $100k scholarship to NOT go to college!


15 posted on 05/21/2013 8:59:09 PM PDT by DIRTYSECRET
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Step Right Up
16 posted on 05/21/2013 9:00:32 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: DIRTYSECRET

I don’t blame her.
I blame the scientific board that awarded the prize.

She’s just an ambitious greenhorn with no world experience.


17 posted on 05/21/2013 9:02:17 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: SeekAndFind
Interesting comments at the link. It is apparently not at all clear what she accomplished on her own.

Here is her project summary, "Design and Synthesis of Hydrogenated TiO2-Polyaniline Nanorods for Flexible High-Performance Supercapacitors":

http://www.usc.edu/CSSF//History/2013/Projects/S0912.pdf

Notice the last line: "Used lab equipment at University of California Santa Cruz under the supervision of Dr. Yat Li".

Here's an article published in February of 2012 by authors including Dr. Yat Li of the University of California, Santa Cruz:

Title: Hydrogenated TiO2 Nanotube Arrays for Supercapacitors

http://research.pbsci.ucsc.edu/chemistry/li/publications/2012_NanoLett_12_1690-1696.pdf

You have to wonder if Dr Li didn't deserve the award.

Let's see how Dr. Li would look in future Intel PR videos:

So sorry, Dr. Li.

18 posted on 05/21/2013 9:15:33 PM PDT by TChad (Call them Oppressives, not Progressives)
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To: mylife

‘You’ll burn your eye out, kid.’


19 posted on 05/21/2013 9:33:46 PM PDT by onedoug
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To: TChad

I thought this was a student competition? Using professionals is tantamount to “cheating”.... but hey... in this new world, that is A-O-K!


20 posted on 05/21/2013 9:49:01 PM PDT by antceecee (Bless us Father.. have mercy on us and protect us from evil.)
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To: SeekAndFind
This is not about charging a cell phone battery at all, much less in 20 seconds. It's about replacing the cell phone's battery with a supercapacitor capable of being charged in 20 seconds.
21 posted on 05/21/2013 9:56:18 PM PDT by cynwoody
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To: TChad

Well now we know where she got the lab.


22 posted on 05/21/2013 9:58:33 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: All

This is really about pushing unqualified minority females in the tech industry into engineering positions. Wait til you have to work for one of these dummies.


23 posted on 05/21/2013 10:03:54 PM PDT by AlmaKing
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To: DaxtonBrown
Another problem is quick discharge rates can lead to heat/explosions. Or one helluva jolt from a small package. Don’t put your tongue on one.

Everytime I hear of things like this, I think back to 1979/1980 to an old column in "Elementary Electronics where someone wrote into the Q&A, "Ask Hank He Knows." It was a claim where they could charge the batteries of an electric car in a few minutes. Hank answer where if it was done, you'd be putting so much amperage (current) into the battery, the wiring in you house would be so thick and humungeous, it would generate heat through the wires and electrical system, Also, you'd get a lot of heat from the battery, Hank said, "it would even glow." Heat is bad for batteries or even components like capacitors, it is not a good idea to fast charge them because of that. I prefer to use a slow charge on batteries unless I truly needed them, then I went with a fast charge. I'm skeptical on this one. I know we made advances in electronics from 1979 to now but the laws of physics are the same then as now.
24 posted on 05/21/2013 10:06:46 PM PDT by Nowhere Man (Holodeck Computer! End Obongo Administration Simulation Program NOW!!!!)
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To: mylife
I have to admit, still don't understand why she won the 50 Gs on this.
What breakthrough did she make?
25 posted on 05/21/2013 10:07:15 PM PDT by The Cajun (Sarah Palin, Mark Levin......Nuff said.)
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To: antceecee
I thought this was a student competition?

I'm wondering exactly what sort of competition it was. She is too damned pretty.

If her beauty is unrelated to the award, and if she actually did substantive scientific work on her own, then I apologize for my cynical suspicions.

26 posted on 05/21/2013 10:11:21 PM PDT by TChad (Call them Oppressives, not Progressives)
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To: The Cajun

None.
It’s like giving her an award for the same old cold fusion crap that has been scammed again and a again.

It’s all on the taxpayer dime, so why not build her up?


27 posted on 05/21/2013 10:11:22 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: Greysard
Have you built a perpetual energy device yet?
The technology is almost here or it's being hidden.
28 posted on 05/21/2013 10:12:34 PM PDT by MaxMax
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To: Nowhere Man

Hmm...
I wonder why Volt owners homes were burning down when they used “Quick Charge”?

Solar panels will save us, I see them on “Every Home”. /s

All this stuff should be explored in a free market.
NONE of it should be this scam that is going on.


29 posted on 05/21/2013 10:16:47 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: MaxMax
In this house we obey the laws of thermal dynamics!!
30 posted on 05/21/2013 10:21:05 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: DManA

Correct and an LED requires very little current to operate. Sounds like she hasn’t invented anything new but may have found a way to apply current technology to meet a need. We’ll see...


31 posted on 05/21/2013 10:21:10 PM PDT by jsanders2001
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To: mylife
Well now we know where she got the lab.

...and the idea to use a nanotech stucture of titanium dioxide to make a supercapacitor. Thank you, Dr. Li!

32 posted on 05/21/2013 10:28:41 PM PDT by TChad (Call them Oppressives, not Progressives)
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To: jsanders2001

We use LED lights in some of our USAF planes for general lighting (To save energy I suppose), It sucks, it is crappy lighting and there are some big ass jet engines sucking some fuel out there so what is the point?.

OK I get reducing the power load so we have more capability.

Hey, you gotta pee standing up in the corner at 50K with a curtain around ya, because some ahole bitched about a $900 terlit seat LOL.

All this stuff is a trade off.


33 posted on 05/21/2013 10:29:23 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: AlmaKing
This is really about pushing unqualified minority females in the tech industry into engineering positions. Wait til you have to work for one of these dummies.

Yeah, I'm cynical too. If this was really true, most likely it would have been in use by 1970 or so. I've known about "supercaps" and the principle behind this since I first played around with electronics kits in the 1970's. It was neat to charge up big capacitors to see how long it took to make a LED glow, but it lasted only a few seconds and the brightness went down fast. If this is true, I will admit I was wrong and stand corrected, but at best, there is a very limited use for this and worst, shenanigans.
34 posted on 05/21/2013 10:30:01 PM PDT by Nowhere Man (Holodeck Computer! End Obongo Administration Simulation Program NOW!!!!)
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To: AlmaKing

“This is really about pushing unqualified minority females in the tech industry into engineering positions. Wait til you have to work for one of these dummies.”

Though I have worked with some fine female engineers. The female engineers that came through diversity pushes are godawful. I’m not saying I haven’t worked with my share of godawful male engineers, but the difference is if a male engineer sucks, you simply get rid of him. The diversity hire has kryptonite shielding, and the only way to get her out of the field is to promote her to another department.


35 posted on 05/21/2013 10:30:38 PM PDT by dsrtsage (One half of all people have below average IQ. In the US the number is 54%)
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To: TChad

We can make a car that gets 75 MPG but it won’t pull a mesquite stump out of the field.


36 posted on 05/21/2013 10:33:34 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: dsrtsage

A neat parlor trick at this point.

https://www.youtube.com/watch?v=tMhXCG6k6oA


37 posted on 05/21/2013 10:38:00 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: mylife
Hmm...
I wonder why Volt owners homes were burning down when they used “Quick Charge”?


Good points. Either the house wiring and/or the charging unit itself is not up to handled the current or you'd have the same thing in the car itself thus causing these fires and explosions.
38 posted on 05/21/2013 10:40:10 PM PDT by Nowhere Man (Holodeck Computer! End Obongo Administration Simulation Program NOW!!!!)
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To: Nowhere Man

I imagine despite well engineered chargers and battery’s, the diameter of the cabling was to small.

Still, the laws of thermodynamics stand.
Battery’s also go into thermal runaway.


39 posted on 05/21/2013 10:43:08 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: Nowhere Man

The VOLT cars should be powered by pedals.


40 posted on 05/21/2013 10:43:44 PM PDT by GeronL (http://asspos.blogspot.com)
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To: GeronL

Jimmy Carter started the first great Solar Panel rave in 1973.
That was 40 freakin years ago.

Have they made it better? Hell Yeah!
Can it compete with conventional energy?
Hell No!

If it did we would see solar panels everywhere..
It is a limited application and on the wider green level, it is a scam.


41 posted on 05/21/2013 10:49:56 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: mylife

Some jackass got all up on me in like 2008 out of the blue, she was saying what a jackass conservatives and particularly GWB was.

I did not bring it up.
She was just a pissed off know it all.

She informed me that she was gonna live off the grid on a 2’x1’ solar panel LOL

I told her she might charge the radio with that, or the cell phone, but you aint gonna run the fridge or AC with it, and have you considered water?


42 posted on 05/21/2013 11:05:03 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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And it aint gonna happen in 20 seconds, LoL


43 posted on 05/21/2013 11:05:43 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: mylife
I got a bigger one than that to keep my danged boat batteries trickled charged, LOL.
44 posted on 05/21/2013 11:11:11 PM PDT by The Cajun (Sarah Palin, Mark Levin......Nuff said.)
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To: The Cajun

Yeah,

A trickle charge.

It does have specialty applications, but you aint gonna run solar panel factory on solar energy.

There is to much loss.


45 posted on 05/21/2013 11:15:05 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: All

you aint gonna run a solar panel factory on solar energy.

That is the bottom line.

Imagine the energy loss lighting all the dim bulbs.


46 posted on 05/21/2013 11:20:36 PM PDT by mylife (Ted Cruz understands the law, and he does not fear the unlawful.)
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To: MaxMax
Have you built a perpetual energy device yet?

I don't build energy-producing devices. I specialize in exactly the opposite :-)

47 posted on 05/21/2013 11:46:52 PM PDT by Greysard
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To: mylife

I will run my refrigerator and freezer with LPG. The enameled cast iron cook range is wood fired, as is the Vermont castings stove in the living room.

So, why will I have a generator? To charge the batteries during the day, that will provide electricity for lights, the computer, and run my hairdryer later.

Where I live, the rain can be measured by the foot. Collection off of roofs is substantial. Just filter and chlorinate.


48 posted on 05/22/2013 1:56:10 AM PDT by SatinDoll (NATURAL BORN CITZEN: BORN IN THE USA OF CITIZEN PARENTS.)
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49 posted on 05/22/2013 5:57:32 AM PDT by A.A. Cunningham (Barry Soetoro can't pass E-verify)
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To: SeekAndFind

Good kid, but she’d better get out of California before trying to make a business selling it. She’ll be taxed out of existence.


50 posted on 05/22/2013 7:00:05 AM PDT by JimRed (Excise the cancer before it kills us; feed &water the Tree of Liberty! TERM LIMITS, NOW & FOREVER!)
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