New LED = Looooong Battery Life !!

[laur]

Here is an interesting article about a new LED that can light for 80 years on a single battery:

http://www.news.com/8301-10784_3-9880704-7.html?part=rss&subj=news&tag=2547-1_3-0-20


and another article about a nanotechnology tweaked battery with 5 times the energy density of an alkaline battery (start reading at paragraph #5):

http://www.eetimes.com/showArticle.jhtml?articleID=206801669

Put them together and you have a battery/light combo that will outlast any natural disaster or power outage.

laur

 

[TorchBoy]

I think the reader's comment about a world without conterfeit shoes is off track. We'll just know that the shoes are counterfeit. At least until the counterfeiters counterfeit that anti-counterfeit measure as well.

How easy are they to make in large arrays?

 

[Melchior]

A larger array would defeat the point of making a LED last 80 years.

Btw, no battery would last 80 years. (Perhaps a RTG or Betacell..but those are hardly 'normal')

I think realistically a Lithium-Iodine battery could blink a high-efficency red LED for 15 years...
Or a solar cell and a super-capacitor...

Complain about the runtime now...lol:naughty:

 

[tr098a]

It doesn't mention how bright it is?
:sick2:

 

[mdocod]

It doesn't mention where they found a battery that doesn't self discharge or start leaking or corrode in 80 years. Pretty much every coin cell battery I am aware of has a shelf life of 2-10 years depending on chemistry, I don't doubt some of the better ones could be stretched to 20-30 years, but 80 is pushing it. Such a title to an article proves great incompetence on the part of the writer in this particular field. It would be akin to me writing a large title "Car goes 5400 miles on 1 tank of gas," and then pointing out in the details that the car is pulling a 300 gallon tank of gas on a trailer. In this case, it happens to be the other way around, instead of the tank being unusually large, the amount of power needed is unusually low. Pointing out an example in the article to give the reader an idea how low the power consumption is by listing how many years it is estimated to run for on a commonly known cell size would be reasonable, but making that analogous comparison the title of the article is bad form, because the ability to run an estimated 80 years on a small power source is not the big picture. The big picture is that they have developed a smaller die that can run efficiently on lower input power, which can translate to MANY useful things. Using 1 of those useful things as the title is..... bleh.... I've complained enough... you see what happens when I have to wake up at 6:30 in the morning?

 

[2xTrinity]

The big picture is that they have developed a smaller die that can run efficiently on lower input power, which can translate to MANY useful things. Using 1 of those useful things as the title is..... bleh.... I've complained enough... you see what happens when I have to wake up at 6:30 in the morning?

This is similar to how Low-Self-Discharge batteries are advertized as "pre-charged" when that is only a trivial side effect of the LSD property, which has a great deal of benefits.