We have no real way of verifying whether or not these so-calls crystals were purchased alongside some bizarre time machine on eBay, but we'll take this guy's word for it and assume not for the time being. Reportedly, University of Queensland professor Max Lu has teamed up with researchers in order to grow "the world's first titanium oxide single crystals with large amounts of reactive surfaces." Put simply, these very crystals can "absorb sunlight and convert it into electricity." It's said that Lu has been working on the project for some 15 years, and even now, he doesn't expect the creation to be commercially viable for another decade. Aside from morphing into fairies and making dreams come true, the things could also be used to "purify air and water." Pair this up with an invisibility cloak and we'll really be in business.

[Thanks, Brendan]

While we certainly applaud the designers at Spectrolab for developing a solar cell that's reportedly "twice as efficient as typical rooftop solar panels," we're stifling most of our excitement until it actually leaves the laboratory. Nevertheless, the Boeing subsidiary has apparently cranked out a cell that utilizes metamorphic materials and is "designed for photovoltaic systems that use lenses and mirrors to concentrate the sun's rays onto small, high-efficiency solar cells." The unique semiconductors used are said to resemble ones that adorn satellites and planetary landers, and can capture three layers of the solar spectrum versus the single layer that traditional solar panels collect. Unfortunately, it seems that the eventual goals for this thing are rather ho hum, as the crew only expects the cells to hit 45-percent efficiency within the next six or so years. C'mon folks, you've already got alternatives at 40.

While we wouldn't expect you to create your own city-powering solar tower in just 72 hours, the folks at MAKE have unveiled a sweet weekend project to get the frightened DIY novices in the crowd involved in robotics. The cleverly-dubbed beambot can be created from spare parts junking up your garage (or for the hardcore, your silverware drawer) as well as pre-packaged kits, and best of all, the energy required to bring these machines to life is available for free during standard daylight hours. The solar-powered bots don't do much besides walk around, explore the terrain, and become gradually less active as dawn approaches, but we're sure the more highly trained robotics engineers could bolt on a slingshot and quickly devise an underground beambot fighting championship. Regardless of your plans this weekend, be sure to visit the read link if you're dying for an excuse to cancel 'em.

A solar-powered air conditioner doesn't do one much good during a Vermont winter, but rather than cranking on the heater (or huddling under the heated Hello Kitty mat) just to heat things up in a relatively small garage, a clever DIYer set out to concoct his own solar heater using scrap parts and a bit of free time. The solar wall was primarily built with black-painted soda cans, a wooden wall, plexiglass cover, and an inlet and outlet to channel the air around. The homegrown "solar furnace" captured the sunlight beaming onto the south side of the building, and as cool air found its way into the toasty cans and rose through drilled out portals, it managed to heat up a respectable 15-degrees Fahrenheit before escaping into the garage. The creator did note that his next attempt would sport a relocated inlet and be much larger in size, but if you're interested in putting a few in-the-way parts to good use next winter, be sure to hit the read link for a pictorial how-to.

[Via HackNMod, thanks Joe]

It's not like we had anything personal against the 80s style boomboxes that lasted a good half hour or so on eight D-cell batteries, but tagging one along to a day at the beach wound up getting pretty costly in a hurry. Joining the hordes of other eco-friendly and multi-faceted camping / outdoor gear is the Wireless Outdoor Solar Speaker, which is quite likely to be overlooked as a simple thermos at first glance. Atop the canister sits a solar panel that soaks up energy and uses it to pump out tunes through its (understandably weak) five-watt speaker. Additionally, a complimentary wireless (albeit battery-powered) transceiver allows any music source with a 3.5-millimeter output to be beam music to the solar speaker from "up to 150 feet away." Reportedly, the sun-lovin' device will run UK-based chaps £99.95 ($199), but that's assuming you can actually catch it in stock.

[Via PopGadget]

Being Earth Week and all, it's not too surprising to hear of San Diegans stretching their mental might and figuring out an effective way to convert carbon dioxide to fuel, but according to the University of California, San Diego, that's precisely what they've done. Clifford Kubiak and Aaron Sathrum have reportedly developed a prototype device "that can capture energy from the sun, convert it to electrical energy, and split carbon dioxide into carbon monoxide and oxygen." Interestingly, this concept produces more than just an alternate source of fuel, as CO2 splitting also creates a "useful industrial chemical" in CO, and furthermore, helps reduce a greenhouse gas. Currently, they are building the device using a gallium-phosphide semiconductor, and while the existing rendition still requires "additional energy" outside of sheer sunlight for the process to work, they're hoping that the American Chemical Society will warm up to the idea and give 'em a helping hand.

[Via Physorg, thanks Richard N.]

Although solar panels are becoming more and more efficient, one of the most glaring oversights in solar technology has been the inability for panels to autonomously move along with the sun and maximize the energy it could take in. The Portasol Tracker, however, is aiming to change all that, as a market-ready rendition is finally set after seven years of testing. The Hydrasolar panel utilizes hydraulic motors along with sophisticated "passive solar trackers to affect the thermal expansion and contraction of a contained liquid to make the device rotate." Essentially, the movement of the liquid causes the panel to spin to the west along with the sun as the day passes on, ensuring that the maximum amount of energy is garnered during those precious daylight hours. Currently, a small selection of models and mounting options are becoming available, and while hard pricing doesn't yet seem to be available, feel free to hit the links below for a smattering of pics and even a quick video overview.

[Via MAKE]

There's apparently a good bit of conflict at the University of Edinburgh, as we've got one esteemed fellow claiming that nanotech products are potentially dangerous, and now we've got a professor of chemistry insinuating that his nanomachines can change the world. Regardless of their personal differences, David Leigh has borrowed an idea from 1867 in crafting "a minuscule motor that could lead to the creation of microscopic nanomachines," and while he credits the "Maxwell's Demon" as its inspiration, he hopes these plans will actually lead to something substantial. The bantam motor is entirely solar-powered, and has been "devised to trap molecules as they move in a certain direction under their natural motion." Preliminary tests have shown a nanomachine moving a drop of water uphill by using molecular force, which gives researchers hope that this discovery will allow these diminutive machines to "do things that are much closer to what biological machines do." Of course, even Mr. Leigh admits that predicting just how this can or will effect society is difficult, but considering that he's aiming to to bring things that "could happen in a Harry Potter film" to fruition, we won't count him out just yet.

Considering nobody (well, mostly) likes to be alone in the dark for months on end, a group of Italians have devised a method to brighten everyone's day. Due to their position around numerous mountaintops that cut off direct sunlight and warmth during the winter months, the villagers were previously left to fend off darkness and cold without any external assistance, but thanks to a ridiculously large mirror (and some clever engineering), all that's changed. The sun-challenged hamlet nestled in the Ossola Valley now has a "towering 26- by 16-foot mirror installed on the flank of one bluff," and it utilizes a "computer to follow the sun's path and cast its rays back on Viganella." The project, seven years in the making, was reportedly difficult to construct and fund, but now that they've forked out the €100,000 ($131,260) and rediscovered the sun, we imagine the current population of 185 will likely be on the rise when envious folks from neighboring towns start to move in.

It's hard to think of that cute little Wii box harboring vampiric tendencies, but beyond its Nintendo-confirmed aversion to halogen lights, the Wii sensor bar apparently can't handle your garden variety sunlight either. This little "quirk" was discovered by OMBRENOIR17, an official Warpstar Knight over at the Nintendo NSider Forums, who experienced an hour of downtime at a recent Wii demonstration at Nintendo World when the Sun hit the showroom and shrouded the display units in light. According to trusty ol' Wikipedia, "sunlight" is apparently quite commonly encountered by the Earth's surface dwellers, and might even pose a problem to the console's casual target market, but we don't foresee it posing much of a threat to Engadget HQ bunkers. Threat averted.

[Via digg]