nanocrystals
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ICYMI: Skyjumping science experiments and more
try{document.getElementById("aol-cms-player-1").style.display="none";}catch(e){}Today on In Case You Missed It: University of Melbourne researchers studying non-sized crystals (that might one day be used to store greenhouse gases) needed to know what the nanoparticles would do in low-gravity, so they jumped off a plane while holding them. Scientists from Ohio State developed a bottle coating to let shampoo and soap inside of plastic bottles flow freely, rather than get stuck. This maker got really excited about visualizing what the inside of modern computer looks like, so he built a huge one. As always, please share any interesting tech or science videos you find by using the #ICYMI hashtag on Twitter for @mskerryd.
Everything you know is wrong: lasers are cooling things now
A group of scientists at the University of Washington were able to successfully refrigerate water using an infrared laser. This is a big deal because researchers weren't even sure this was possible as water tends to heat up when illuminated. However, by using an infrared laser and nanocrystal, it surprisingly created the opposite effect, which is a world first. The team of scientists were able to cool liquid water by 36 degrees Fahrenheit (20 degrees Celsius). The crystal absorbed the light's photons and then when the photons were released, they had a higher energy value compared to when they first entered. These photons then scattered and carried away heat, cooling the surrounding water.
Samsung's high-end TVs use nanocrystals for better color, efficiency
Samsung doesn't think your plain old UHD TV will cut it anymore. You know, like the models it debuted last year. Now what's the newest in new? SUHD, with the outfit saying it reserves the "S" designation for its top-tier models we're about to describe. The displays run Tizen and range from 48 inches to 88 inches in size, coming in three different model lines: JS9500, JS9000 and JS8500. Nanocrystal semiconductors are a portion of what sets these apart, with the tech apparently allowing for more accurate colors. The panels offer double the color adjustment points so your calibrator (or perhaps you) can dial the screen in to utmost accuracy and get a better idea of what the filmmaker intended, too.
Researchers develop energy saving smart window that filters out heat and / or light
In the heat of summer, either you shut the windows and crank up the AC, or pull down the blinds and stumble around in the gloom. At least, that was the case. A team at the Lawrence Berkeley National Laboratory has developed a new smart window that lets people choose what they want to let into their home, filtering out visible light, near-infra-red light, or both. Using a thin layer of nanocrystals that change state when electricity is passed through, will enable people to save on home energy bills by keeping the bulk of the Sun's heat out of the home without sacrificing the natural light. Now all we have to do is hook this up with one of Samsung's touchscreen windows and we'll never have to leave home again.
USC develops printable liquid solar cells for flexible, low-cost panels
Solar cells are becoming more viable sources of energy -- and as they become more efficient, they're only getting smaller and cheaper to produce. Liquid nanocrystal cells are traditionally inefficient at converting sunlight into electricity, but by adding a synthetic ligand to help transmit currents, researchers at USC have improved their effectiveness. The advantage of these liquid solar cells? They're cheaper than single-crystal silicon wafer solutions, and they're also a shockingly minuscule four nanometers in size, meaning more than 250 billion could fit on the head of a pin. Moreover, they can be printed onto surfaces -- even plastic -- without melting. Ultimately, the goal of this research is to pave the way for ultra-flexible solar panels. However, the scientists are still experimenting with materials for constructing the nanocrystals, since the semiconductor cadmium selenide they've used thus far is too toxic for commercial use.
5nm crystals could lead to vastly larger optical discs, mighty fine time machines
Blu-ray was already looking mighty fine at 25GB of storage per layer -- and if Sony manages to make the indigo foil sheets hold 33.4GB each, we certainly won't complain -- but Japanese researchers have discovered a compound that could leapfrog Blu-ray entirely. Scientists at the University of Tokyo discovered that by hitting 5-nanometer titanium pentoxide crystals with a laser, they could get the metal to change color and conduct less electricity, leading to what they believe is an effective new medium for optical data storage. At 5nm, the small black crystals could reportedly hold 1,000 times the data of Blu-ray at the same density, and cost less to boot -- the scholars reportedly synthesized the formula simply by adding hydrogen to the common, comparatively cheap titanium dioxide, while heating the compound over a fire. Ahh, nanotechnology -- making our lives easier, one microscopic crystal or tube at a time.
Fujitsu's quantum dot laser fires data at 25Gbps, not just for show
Fujitsu just announced what's reportedly the world's first quantum dot laser capable of 25 gigabits per second of data transmission. Go on -- there's no need to hold your applause. Now, we've seen lasers beam packets at 1.2 terabits per second over miles of open ground, and up to 15.5Tbps through a fat optical pipe, so why would a measly 25Gbps attract our attention? Only because we hear that the IEEE is hoping to create a 100Gbps ethernet standard by 2010 (that's now!) and four of Fujitsu's new nanocrystal lasers bundled together just so happen to fulfill that requirement. It also doesn't hurt that the company's quantum dot solution reportedly uses less electricity than the competition, and that Fujitsu has a spin-off firm -- QD Laser -- champing at the bit to commercialize the technology. All in all, this tech seems like it might actually take off... assuming early adopters are more successful than major corporations at deploying the requisite fiber. Either that, or we'll just enjoy some seriously speedy displays and external drives, both of which sound downright delightful in their own right.
InVisage envisions a world where cell phone cameras don't suck, embraces quantum dots
The invention of nanocrystal semiconductors -- more commonly called quantum dots -- has spurred scientists to create everything from precisely-colored LED lamps to higher-density flash memory. There's also been some talk of applying a solution of the tiny crystals to create higher sensitivity cameras, and according to a company named InVisage, that latter utility is almost ready for commercial production. By smearing light-amplifying quantum dots onto the existing CMOS sensors used in cell phone cameras like so much strawberry jam, InVisage claims it will offer smartphone sensors that have four times the performance and twice the dynamic range of existing chips by the end of the year, and roll out the conveyor belts in late 2011, just in time for the contract to end on your terrible new cameraphone. [Thanks, Matt]
Nanocrystal breakthrough promises more versatile lasers, world peace
For the longest while, scientists have been flummoxed by the incessant coruscating emitted by individual molecules; no matter their methods, they could never quite seem to overcome a troubling optical quirk known sensibly as "blinking." Thanks to a brilliant crew at the University of Rochester, however, we now understand the basic physics behind the phenomenon, and together with a team from Eastman Kodak, a nanocrystal has been created that can constantly emit light. In theory, the discovery could lead to "dramatically less expensive and more versatile lasers, brighter LED lighting, and biological markers that track how a drug interacts with a cell at a level never before possible." Indeed, one could envision that future displays could be crafted by painting a grid of differently sized nanocrystals onto a flat surface, making even OLED TVs look chubby in comparison. Now, if only we had a good feeling that such a device was destined for a CES in our lifetime...
Metal nanocrystals promise to double flash memory capacity
There's certainly no shortage of folks trying to create bigger, better flash memory, but upstart Nanosys seems to think it's found a winning formula, and it's apparently already got some big names on board. Key to its solution are so-called "self-assembled metal nanocrystals" which, when added to the flash manufacturing process, supposedly doubles the capacity of conventional chips. According to MIT's Technology Review, the crystals themselves are "grown" in a liquid solution and then spun onto silicon wafers -- not an entirely new process, but Nanosys has apparently come up with a chemical process that produces crystals that are more uniform in size and spacing than previous attempts by others. That's apparently been enough to attract the interest of Intel and Micron, who Nanosys says could be putting the technology to use as soon as 2009.
