Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 Internet speed test! ×

Creating Electric Power From Light Using Gold Nanoparticles 77

cyberfringe writes "Professor of Materials Science Dawn Bonnell and colleagues at the University of Pennsylvania have discovered a way to turn optical radiation into electrical current that could lead to self-powering molecular circuits and efficient data storage. They create surface plasmons that ride the surface of gold nanoparticles on a glass substrate. Surface plasmons were found to increase the efficiency of current production by a factor of four to 20, and with many independent parameters to optimize, enhancement factors could reach into the thousands. 'If the efficiency of the system could be scaled up without any additional, unforeseen limitations, we could conceivably manufacture a 1A, 1V sample the diameter of a human hair and an inch long,' Prof. Bonnell explained. The academic paper was published in the current issue of ACS Nano. (Abstract available for free.) The significance? This may allow the creation of nano-sized circuits that can power themselves through sunlight (or another directed light source). Delivery of power to nanodevices is one of the big challenges in the field."

Comment Re:Finally? (Score 1, Insightful) 151

well-- the 10th amendment seems pretty clear: unless it's spelled out in the constitution, leave it to the states or the people. So, the real question is your own: Could you please explain to me where the feds get the right to do this? Which part of the constitution allows this?

Comment Re:Caizen is actually spelt with a K (Score 1) 432

I was trying to make a joke about the 'splitting hairs' concerning the word 'spelling', not the actual spelling-- but it doesn't seem to have worked. I know how romaji is used. As to your other question concerning "why" Japanease substitute the 'c' for 'k', I have no idea, except to perhaps invoke some sort of unique branding or maybe "frenchiness" as you postulate. As I said, I notice this with bars and clothing shops mostly-- not "all". yoroshiku.

Comment Re:Caizen is actually spelt with a K (Score 3, Interesting) 432

Okay, you want to split hairs? Japanese words are not "spelled", they are written using a mix of Chinese and phonetic symbols. As noted above æ"å- is how one should write the Japanese word for "improvement". Unfortunately, many people outside East Asia has no idea how to read or pronounce that, so we "romanize" words based on a commonly accepted latin alphabet equivalent. The usual Latin alphabet equivalent is kaizen with a k. Lately, a lot of bars and brands in Japan are trying to use the 'c' instead of the 'k'-- the most common example is the NTT wireless provider Docomo (meaning "anywhere"). Here endeth the lesson.

Comment Bucardo.org (Score 1) 312

I used to work at a company that used open source almost everywhere. We were pretty zealous about it, looking back now. At the core of the data structure, we were using Postgresql and had a scheme of mastermaster replication between two data centers. We developed a way to handle this. After some soul searching, and a realistic analysis, the owners came to the conclusion that the software didn't really help our direct competitors, and would be safer/better out in the open. So, we open sourced it: http://www.bucardo.org/ Here is the press release from the company: Backcountry finally gives something back

Comment Reviews are the key to the second wave (Score 5, Informative) 820

The opening weekend of any 'blockbuster' movie is really just a barometer for how good the hype was, how good the trailer is, and how much pent up demand there was for the adaptation. This is true for X-Men, X-Files, Watchmen, Batman, and our beloved crew of the Enterprise. That second week, and the subsequent weeks, is very dependent on the reviews. These are the people who waited for someone else to go see it opening weekend, and then wait to hear what they said about the movie. Star Trek is getting great reviews, and not just from the newspaper shills-- audiences generally like the film. This is different than the (lack of) buzz about Wolverine, and the outright confusion about the Watchmen. It's more along the lines of Batman Begins: your older sister asked you "Really? Another Batman movie?" to which you've replied "oh yeah-- it's that good." Expect a strong 4 week run on Star Trek.

Comment money-making opportunity (Score 4, Interesting) 504

You should view this as an incredible money-making opportunity: they've created an artificial shortage for online access, so exploit it:
  1. go to radio shack/fry's/wherever to get your satellite broadband hook-up equipment. It doesn't matter if the equipment costs you $5000-- you'll make it back.
  2. Set up Internet access in your cabin
  3. Charge the other students $10/10 minutes. Bonus points if you can get 2-3 terminals working over your sat connection. You'll probably be billing out a solid 3 hours/night = $180/day * 90 days = $16,200.
  4. Profit!!!

You're welcome.

Hardware Hacking

Submission + - Cancer breakthrough invented in garage in Florida (wkyc.com) 1

Provocateur writes: "A former radio engineer has invented a device that could possibly kill cancer cells with radio waves — in his garage. He is a cancer patient himself. This ham radio operator had an idea in the middle of the night. This inspiring story has it all for /. fans: the motivation, the garage, the hacking together of hardware and kitchen utensils, and initial testing on hotdogs — what's not to like?"

Slashdot Top Deals

Sendmail may be safely run set-user-id to root. -- Eric Allman, "Sendmail Installation Guide"