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Shuji Nakamura Awarded the 2006 Millennium Prize
Mictian writes "University of California professor Shuji Nakamura, the japanese inventor of the bright green, white and blue GaN LEDs and a blue laser, has been awarded the 2006 Millennium Technology Prize. While blue LEDs are considered cool and thus needful things by most nerds, Nakamura adapted his blue LEDs to make a blue laser in the mid 90s. The next generation optical storage formats, HD-DVD and BluRay, are of course both based on blue laser. Also, his white LEDS need far less energy than normal incandescent lamps and can thus provide plenty of opportunity for energy-saving in the industrialized world. But probably the most significant future application for Shuji Nakamura's invention comes in the form of sterilizing drinking water, since the the water purification process can be made cheaper and more efficient with the use of ultraviolet LEDs. This can improve the lives and health of tens of millions people in developing countries."
maybe someday I can microwave food with some leds instead of that big, ugly magnetron?
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Since when does HD-DVD use a blue laser?
"his white LEDS need far less energy than normal incandescent lamps"
"LEDS" should be spelled "LEDs".
...for whom the patent system was created. All of his works are absolutely ubiquitous now in our world.
Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
Why can't there be a prize for flaming on slashdot?
Looking for an Information Security student project suggestion?
Try http://dotcrimeManifesto.com/
I hate those blue LEDs that are on every damn bit of electronics these days. So many manufacturers don't bother to tone it down, so you have all these power indicators that can light up the damn room. Especially irritating if they're flashing, like when my laptop is suspended.
Oh, and backlit cellphone keypads, blue? Worst idea ever. Blue is the about the hardest color to get your eyes to focus on.
So many designers have no sense of aesthetics. They just go with the trend du jour.
SO YOU'RE GOING TO DIE: The Comic for Dealing with Death
...which is phenomenal and well-deserving of the prize, but why the comparison to incandescent bulbs for large-scale energy savings? Flourescent lightss, including full-spectrum lights that produce better quality light than most incadescent bulbs, are much more efficient than incandescents, too, for their output; my understanding is that White LED lights are now somewhat more efficient even than flourescents, which is the real reason they offer a big step forward in terms of large-scale energy savings (plus, they are much easier to make very small, which is good for lots of applications where flourescent lights aren't really well suited, but that's not going to be the source of enormous energy savings.)
Shuji Nakamura got boned by his employer Nichia, and it's got to feel sweet for him that he's getting recognized for his work anyway.
"The court actually valued Nakamura's contribution to the company at 60.4 billion yen, based on Nichia's sales and the revenue that it might theoretically have received from licensing a key patent relating to the epitaxial growth of LED material."
http://www.ledsmagazine.com/articles/news/2/1/5/1
A few years ago I invested in a white LED headlight/torch for when I would go camping.
I got almost 2 years out of a set of 3 AAA batteries, the light itself provided excellent light at night and stayed bright up until the batteries were noticably dying.
It was one of the most practical investments I ever made.
Un-toned-down blue LEDs are a pet peeve of mine, too... as an example, my old Shuttle SK41G, a small-form-factor PC that would have otherwise made a decent MythTV box, has this incredibly frickin' bright blue power indicator.
Shuttle must have learned the lesson, because my new SN21G5 cube has much more pleasant indicators on the front panel - although the power light is still blue, it isn't obnoxious.
Oh, no! You have walked into the slavering fangs of a lurking grue!
"But probably the most significant future application for Shuji Nakamura's invention comes in the form of sterilizing drinking water, since the the water purification process can be made cheaper and more efficient with the use of ultraviolet LEDs. This can improve the lives and health of tens of millions people in developing countries."
This is absurd. No one with even the slightest clue about such things would ever make such a statement. Nakamura's blue and UV GaN/InGaN/AlInGaN leds and laser diodes are great but they will not be used for this purpose. The all emit in the near UV (350 nm or greater) this sucks for killing microorganisims. You want to cause a kink in a bacteria's dna by dimerizing adjacent thymine molecules, thus inhibiting replication. The germicidal efficacy curve which describes this phenomenon peaks at 260nm way below any LED with any kind of reasonable efficiency. A tenuous mercury plasma in a quartz bulb however, will blast out something like over 80% of its light right at this wavelength! There is no way you are going to beat the hugely efficient and dirt cheap germicidal uv lamps already on the market any time soon.
- "Hear that?! The percolations are imminent! Cease your ingress!"
Call his agent. I'll send him an email once the sun recharges my Powerbook's battery.
But within several years time we'll probably find appliances shifting over to LED interior lighting. It'll be great once LEDs overtake flourescents in power efficiency, which we are on the cusp of now -- by the time I'm 80 I hope to have totally forgotten how to change a lightbulb.
Someone had to do it.
Doesn't ultraviolet radiation/light ionize air and kill or seriously mutate living cells?
Imagine a beowulf of these things (like those stupid looking infrared leds for infrared-sensitive CCD/CMOS cameras), ionizing the air into which an electric current is conducted, igniting the ionized air into a plasma which can then be shaped with small electromagnets.
Isn't this essentially how the Deep Space 1 ion-drive propulsion works?
Gimme a few hundred thousand of these UV LEDs, some SPF999, and I'll be running this place in under a week.
Hrmph, maybe this is the 21st century after all.
Time to call the Cheat Commandos and ROCK, ROCK ON!
N4st0r, trixx0r h0bb1tz0rz! Th3y st0l3 0ur pr3c10uzz!
TFA explains "blue lasers," summary misquotes as "ultraviolet LEDs". Whatever, same difference.
Nakamura is not just an LED guru, he's more generally a wizard of light and... light, I guess.
I find it both amusing and fascinating that when they were just coming out, lasers were depicted in sci-fi as being the solution to everything. We laugh, yet they're used for so many things, like laser eye surgery. Maybe LEDs will in time prove to be similarly useful? /still waiting for the death ray.
- RG>
Hey pal, this isn't a pleasantforest, so don't waste my time with pleasantries!
Your right, it doesn't.
405nm falls into the category of Violet (380-420nm). Blue would be between 440 and 490nm.
I wonder if/when we'll ever start using ultraviolet lasers to access data? (Maybe someone already does...?)
To be clear, she's a professor at University of California, Santa Barbara (UCSB) and not University of California, which is usually associated with Berkeley, being the 1st UC in the state.
HD Trailers
It's worth noting that Apple products are typically subdued and understated in their design, as in nary a blinding blue light of death across the line. You want elegance and comfort? Follow your instincts and buy Apple. On the other hand, if you're an aesthetically defective redneck, follow your instincts and cobble together that shitbox you've always wanted with the dozens of meaningless lights and A380 fan. We won't miss you.
And now, a PSA from David Lynch.
One of the main reasons, other than not having to change them nearly as often, for using LEDs in traffic lights is that they are monocromatic: if you have a white light behind a colored filter, you're throwing most of your power into heating the filter. Colored lights are the one application where LEDs are already more efficient than flourescents. So much so that newer lights in remote areas can be cheaply solar powered, which in many situations saves you money when considering the cost of running electric lines from them to the grid versus the panels/battery.
And they are catching on -- we have them here in the U.S. too. By my BoTE estimate, nationwide we have about as much baseline power to save on traffic lights as it would take a midsized coal plant to generate (IIRC they have already penetrated 20% of the streetlighting market.) That's a considerable amount of energy and tax dollars we can save right there -- just a matter of getting those town officials to make the jump.
Someone had to do it.
...Implanted where they can tickle yor tactile nerves and used to sense magnetic fields.
http://www.bmezine.com/news/pubring/20060115.html
Someone had to do it.
... manufacturers wouldn't keep putting high-intensity LEDs in the most ludicrous places. I have a cheapo laminator with a clear plastic handle on top, and embedded in the handle are two of the brightest blue LEDs I have ever seen. They're pointing straight up, which is exactly where my eyes are when I'm trying to feed a sheet of paper into the machine. Of all the stupid gonzo designs...
Anyway, nine layers of masking tape and a liberal application of black texta later these LEDs are barely enough to light three rooms of my house.
Next up are bright LEDS on speaker controls, the front of my LCD monitor, my mouse... After correcting all these things my gear looks like it was smashed with a hammer and stuck back together with tape.
So, kudos to the guy for inventing the LEDS, and minus several million points to the manufacturers for using them.
Hal Spacejock: Science Fiction with Nuts
You mean those organic lights, made from grain?
Oh, fluorescents. Sorry.
Now we're handing over prestigious awards to case modders.
Wise men say, "Forgiveness is divine, but never pay full price for late pizza."
we have them for temporary traffic lights as well. The main benefit being they run off a couple of car batteries each rather than a diesel generator. No noise or fumes.
Third world too, Dr. Dave Irvine-Halliday sent white LEDs to Nepal, India and Sri-Lanka. A whole village can be illuminated with 100W.
Light Up The World Foundation
Dr. Irvine-Halliday at Rolex Awards
Bare moments after they hit the market in the form of flashlights, I ordered at a ludicrously expensive bleeding-edge price the veritable Alpha-Male of the species; a phallic light-thrower which takes three 'D' cells and powers an array of 10 white LEDs. It's super-bright and it will run continuously for something like 3 solid months. Who needs a sports car?
--And because I am confident in my masculinity, I also bought and primarily use a much smaller one with a single LED. Oh god, it's sweet! Super-bright, it runs forever on a triple 'A' cell. I use that thing all the time. Not like the cute but ultimately annoying mini-mag, which ran down after twenty minutes. --I always felt slightly stressed while using that thing for any work. Instead of focusing 100% of my attention on the task it was illuminating, I'd have a little part of my mind worrying, "Oh no! My flashlight is going to die soon!"
Of course, with the far superior LED flashlight replacement, I now find myself distracted spending a sizable percentage of my brain thinking, "Wow! This is just the coolest flashlight on the planet!"
Indeed. White LEDs are the first bit of new technology which actually made me sit up and say, "Holy Awesomeness, Batman! I NEED one of those for my belt!" since. . , well, I can't actually remember the last bit of engineering which I absolutely had to run out and buy.
Oooh, scratch that. I DO remember. It was one of those extendable lightsaber toys when they first hit the market. They were painfully neat in an almost perfect kind of way. (That 8 inches of saber sticking out of the handle when the blade was retracted was dumb, but whatever). I broke mine open and installed extra lightsaber sounds, activated by a handy button so I could deflect pretend blaster bolts at a thumb press. Sooo proud of that. (Hm. Another phallic device. I wonder what's up with that. .
A close runner-up invention in terms of coolness is the flatscreen monitor. They're exceptionally wonderful, (bright, no EM radiation, they don't make any electronic whining sound on the upper end of audio perception, and they're, well, FLAT!), except they didn't hit the market in an exciting burst of newness. They sort of arrived and sucked, then got slowly better and more affordable over a 15 year period. Can you imagine how exciting they would have been if they just suddenly showed up with no warning?
I guess the MP3 was another really neat innovation. Heck. That drove the world stark-raving-giddy for almost two years. Remember Napster? Sheesh! The world is still trying to recover its senses.
And before that. . . Well, I guess the CD was pretty darn cool. The recordable option was exciting. That changed the world as well. As did PacMan and Space Invaders down at the K-Mart entrance during the 80's.
The Mountain Bike was pretty great, too. And so was the mini-Leatherman folding pliers. (The really small one which folds up to the size of a zippo.) I still have and my original pair bought when Leatherman was a new company back in the early nineties and use it regularly.
But none of those things excited me quite like the white LED. White LEDs are beautiful in their simplicity.
The only thing that annoys me about any of this is that I'm getting excited about weenie technology. --The MIC keeps all the really cool inventions from ever being released. We only get these safe little inventions which can't upset the balance of power and money distribution in the world. Ah well. At least we have cool flashlights!
-FL
That is quite possibly the stupidest thing I've read on slashdot in years. OF COURSE the light "stayed" bright until you "noticed" otherwise.
Please help metamoderate.
http://graffitiresearchlab.com/?page_id=6
I haven't kept up with the latest Luxeon LEDs but the last I knew, halogens were still more efficient in terms of lumens per watt. The mercury discharge lamps used in some car and bicycle headlights are even more efficient.
I am becoming gerund, destroyer of verbs.
If GaN emits ultraviolet light, as stated in the article, why didn't they just make UV lasers? Would have had better data density than violet.
as the LED lamps essentially do not need to be replaced. Incandescent lamps not only use more electricity, they have a much shorter life. The city will be saving $1200 a year in electricity, plus the cost of replacing the lamps every couple of years.
I am really pleased to see these taking off--better for the environment on two fronts (longer life, lower power consumption) and nifty tech that I used to fiddle around with as a kid. Anyone else remember the books you could get at Radio Shack that had electronic projects to build? Man, I loved building LED displays.
Interested in a Flash-based MAME front end? Visit mame.danzbb.com
Seriously though I do have a question, FTFA:
My question is simple. Does the phosphor wear out over time (like in CRTs) where the brightness and color will shift over time?
The Christian Right is Neither (Christian nor right). See: Matthew 23, Matthew 25, Ezekiel 16:48-50
By the way, what is this prize? I haven't heard of it before. Who funds it, who picks the candidates and the winner, are there limits to what fields of tech enter the competition? All info welcome :-)
(Couldn't google my way past all the old millennium stuff...)
Slow down and breath, buddy.
Comment of the year
Ah. Sneering humor for no good reason.
Let me guess. You were one of those guys who sat at the back of the class and despised anybody who enjoyed life, participation and enthusiasm, because you never managed to overcome your own internal fears and shyness, etc., and so rather than encouraging others, tried to defuse any possible rogue happiness in the air so that you might control the emotional flow of the room. To stay on top. To stay 'safe', as it were.
Typically guys like that put on a big show of 'rationality', cling to conservative politics with a death grip, and try to force all reality into known quantities of Black & White in order that they never have to face the unknown.
It's all about trying to control EVERYTHING so that it can't hurt you.
Grow up. The world is bigger than you and always will be. Get used to it. Learn to surf or get swallowed. Buddy.
-FL
0.515511555111555511115555511111555555111111 and so on,
would not repeat and would contain infinite digits. However, all of these would be a 5 or a 1. (Similarly, you could just encode Pi in octal but then not mention that it's not decimal: it would still be infinite digits and non-repeating, but with a conspicuous lack 8's or 9's....).
Both intersting and very true! (Although, I did reference Pi in my subject title, and that's the number I was thinking of. I must learn to be more specific in my flippant postings.)
Anyway, cheers to you and happy +3 cruising! (Using Slashdot at a free university? What a neat idea!)
-FL
While you can use UV LEDs for water purification, it doesn't really make much sense in remote, undeveloped areas, as such a system (which has to include a container, a power source and, of course, the LEDs,) is way more expensive than the cheapest known alternative.
o wtech_solar_water_purification_it_works.htm
o a/wa/View/GrantProfile?n=1000504
The alternative is, of course, sunlight.
Using clear plastic bottles (the indestructable bane of the environment, now ubiquitous,) and combining a little shaking and a few hours of exposure to sunlight, you can sterilize quite a bit of water at the cost of a small amount of labor--much less labor than that required to obtain the water in the first place in many locales.
http://www.newmediaexplorer.org/sepp/2006/03/24/l
There is a research grant, http://apps.nciia.org/WebObjects/NciiaResources.w
which claims that "...recycled plastic bottle coated with titanium dioxide and placed in the sun for several hours, killing not only bacteria but other harmful substances such as arsenic and herbicides."
I really want to know more about this one, since in claims to eliminate the toxicity of the element arsenic....
It's "lose", not "loose", you stupid fucking cunt. Learn the fucking difference. Jesus Fucking Christ.
Note: The above is meant as constructive criticism, and should not be interpreted in any other way, moron.
I know a few LD players also used blue lasers. The HLD line of Pioneer MUSE (Japanese HD) compatable LD players used a blue laser.
Well I've wrestled with reality for thirty five years doctor, and I'm happy to say I finally won out over it.