Researchers at Stanford University have built a prototype of an all-carbon solar cell that includes carbon nanotubes in both the photoactive layer and the electrodes. (Source: Mark Shwartz / Stanford University)
I especially like the part about the elimination of indium and silver in this process. As exotic and rare minerals become hard to procure (and with their unequal distribution for each country), this characteristic will make this option more and more attractive.
Akwaman--You are absolutely correct. Water heating is a significant factor in energy usage and solar water heating is definitely one viable solution to that problem--when possible. Years ago, I worked for a water heater manufacturer and one item in our product line was a water heater using solar roof-top panels to "collect" the sun's rays and provide for heating. We had auxilary heating elements when needed during inclement weather. The issue in the southeast was considerable cloud cover that negated available sunlight--and lengthened the ROI. Any advancement such as the one Ann is describing is definitely welcomed to that particular industry. As advancements in solar technology progress, we will see added sales and resurgence in usage even in the most difficult environmental situations.
It's also the case that storing heat for heating water--in large sealed water bottles, rocks and even earth walls--is a lot easier to do than storing "energy" in some other form. It's also been done already.
Earlier posts mentioned 'efficiency' being the #1 issue. While that may be true, it begs the question: How do you measure efficiency? In a spacecraft, it's watts per sq in & watts per pound. But for an individual user like me who wants to make electricity for my home & vehicles, that's meaningless. The only thing I care about is watts per dollar. If this tech can reduce environmental costs, materials costs, production costs, and installation costs (all 'per watt'), that's where I'll put my money.
Charlie, you took the words right out of my mouth. As a consumer, I am continually frustrated by the apparent inability of manufacturers to give performance specs about their products in terms that not only make sense to me, but that are actually usable in an on-the-ground kind of way, not abstract numbers. My anti-favorite one is "joule", used by home office UPS makers. I can never, ever remember what it means and when I look it up, it still means nothing in terms of my home office equipment. But the first thing UPS makers ask is "how many joules do you need?" Sure, I'm an electrician and I think in joules every day, uh-huh. No guys--you're supposed to tell me how many I need based on the info I can provide you.
Inspired by the hooks a parasitic worm uses to penetrate its host's intestines, the Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but doesn't cause damage when removed.
Researchers at the Missouri University of Science & Technology have designed a new nanoscale material that can transmit light faster than the 186,000 miles per second it usually takes to travel through air.
It has often been said that as California goes, so goes the nation. This spring, the state's wind power is setting energy generation records and solar energy generation is expected to rise sharply during the second half of 2013.
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is