Apr 16

Purdue University’s ReadingMate makes the classic reading-running combo a little easier

Posted in: Today's Chili

Purdue University's ReadingMate makes the classic reading-running combo a little easier

Universities aren’t just places for students to cut classes and enjoy themselves before eventually embarking on careers. They are also places where problems get solved, like the one facing runners who find it hard to read on the jog. That bane is the focus of a group of researchers at Purdue University, who are working on a system called ReadingMate, which moves text on a display in reaction to the bobbing head of a runner to stabilize what’s being seen. The screen is sent information from a pair of infrared LED-equipped glasses, but it’s not as simple as shifting text in time with head movement — your eyes are performing corrections of their own, so the words dance slightly out of sync with your noggin to take this into account. It’s performed well in testing, and could have applications beyond the gym, such as in heavy machinery and aircraft, where vibration can hamper reading ability in important situations. Those uses make the most sense — we don’t often find ourselves eager to attack that next Twilight chapter during a near-death treadmill experience.

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Via: Gizmag

Source: Purdue University

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Mar 27

Recyclable organic solar cells: a clean fuel future made possible by trees

Posted in: Today's Chili

Solar cells are made from trees

You don’t have to know Shel Silverstein to know that trees are exceptionally giving. They’re responsible for our homes, paper, air, furniture and, now, energy — the “clean” kind, that is. Researchers from the Georgia Institute of Technology and Purdue University have jointly devised a patent-pending method to build organic solar cells using plant-derived substrates. Known as cellulose nanocrystal substrates (or CNC), these solar cells benefit from being truly disposable, eliminating the waste that results from the use of alternative materials like petroleum or glass. The CNC-made cells are not only transparent enough to allow light to pass into an embedded semiconductor, but they also dissolve when submerged into water, thus earning the esteemed recyclable distinction.

Although this is undoubtedly a breakthrough for clean energy tech, it’s by no means a near-future reality. Apparently, current cells can only yield a 2.7-percent conversion efficiency rate, which falls far below the 10-percent threshold met by rival fabrication methods (i.e., petroleum and glass). So, there’s still significant work to be done before the team can improve production and achieve parity with those less “recyclable” options. Until that time, consider this a comforting reassurance that a clean fuel era is well within reach.

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Via: Forbes

Source: Georgia Tech, Nature

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