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Delaware Ph.D. student hopes to solve energy woes with renewable hydrogen production

Zachary Lutz — Thu, 05 Apr 2012 03:10:00 -0400

Hydrogen fuel is a fickle mistress. On one hand, it teases us with the promise of renewable energy and a cleaner tomorrow. On the other hand, it's most often produced with natural gas as the source -- hardly the clean break from fossil fuels that many had envisioned. Fortunately, there are other methods to harness this abundant element, and a doctoral student at the University of Delaware may have created a worthwhile process. Similar to previous research we've seen -- which relies on ceric oxide and energy from the sun -- Eric Koepf has designed a reactor that combines zinc oxide powder, solar rays and water to derive hydrogen as a storable energy source. Most intriguing, it's thought that the zinc oxide byproduct from the reaction will be reusable -- a potential gateway to sustainable energy. Koepf will spend the next six weeks in Zurich at the Swiss Federal Institute of Technology, where his reactor prototype will be put through its paces to determine its efficiency and effectiveness. If successful, his advisors envision that one day, we may see giant versions of Koepf's reactors producing hydrogen on an industrial scale. We certainly won't fault them for dreaming big.

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NASA makes longer, straighter piezoelectric nanowires in microgravity, no flat iron needed

Michael Gorman — Wed, 06 Apr 2011 01:57:00 -0400

Piezoelectric nanowires are the stuff that make power-generating pants a possibility, and that prodigious potential has drawn the attention of NASA. You see, self-powered spacesuits are awfully attractive to our nation's space agency, and a few of its finest student researchers have discovered that the current-creating strands of zinc oxide can be made longer and straighter -- and therefore more powerful -- when freed from gravity's unrelenting pull. That means nanowires grown in microgravity could lead to higher capacity batteries and the aforementioned juice-generating interstellar garb. Of course, there's no such end-products yet, but let's see if NASA can do what others have not: give pants-power to the people.

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Nanogenerators produce electricity by squeezing your fingers together, while you dance

Sam Sheffer — Thu, 31 Mar 2011 20:23:00 -0400

It's been a while since we last heard about nanogenerators -- you know, those insanely tiny fibers that could potentially be woven into your hoodie to juice up your smartphone. Dr. Zhong Lin Wang of the Georgia Institute of Technology has reported that he and his team of Einsteins constructed nanogenerators with enough energy to potentially power LCDs, LEDs and laser diodes by moving your various limbs. These micro-powerhouses -- strands of piezoelectric zinc oxide, 1 / 500 the width of a single hair strand -- can generate electrical charges when flexed or strained. Wang and his team of researchers shoved a collection of their nanogenerators into a chip 1 / 4 the size of a stamp, stacked five of them on top of one another and can pinch the stack between their fingers to generate the output of two standard AA batteries -- around 3 volts. Although it's not much, we're super excited at this point in development -- imagine how convenient to charge your phone in your pocket sans the bulky battery add-ons. And that's only one application of this technology. Yea, we know.

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