capacitor
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Deep-fried graphene may be the key to long-lasting batteries
The deep frying process isn't just useful for livening up your food -- it might also be the ticket to better batteries in your mobile devices. South Korean researchers have created highly conductive, stable electrode materials by spraying graphene oxide droplets into a very hot blend of acid and organic solvent, much like you'd dip chicken into oil. The resulting "pom-poms" (what you see above) aren't at all tasty, but their open 3D structure makes them far better for transferring electrical charges than plain graphene.
Jon Fingas01.18.2015
EVE Evolved: Fitting battleships for PvP in Odyssey
Tech 1 ships in EVE Online used to be arranged in tiers that determined the cost and power of the ship and what level of the appropriate skill was required to fly it. This gave a sense of progression back in 2004 when all we had was frigates, cruisers, and battleships, but developers have since filled in the gaps between ship classes with destroyers, battlecruisers, strategic cruisers, and tech 2 ships of all shapes and sizes. In a recent game design initiative, CCP has been removing the tiers from within each tech 1 ship class by buffing the lower-tier ships up to the same rough power level as the largest ship in its class. The recent Odyssey expansion saw the humble battleship buffed beyond all recognition. The Megathron, Raven, Tempest, and Apocalypse all became extreme damage-dealing powerhouses, but the Dominix, Scorpion, Typhoon, and Armageddon were buffed the most. Each of them can now fit several monster setups, dealing upward of 1,000 damage per second or completely disabling enemy ships with energy neutralisers and electronic warfare. The build costs of these tier one battleships were more than doubled in the expansion, but prices are only slowly rising due to the existing stock on the market. That makes the tier one battleships incredibly cost-effective PvP powerhouses at the moment, and players are beginning to take advantage of it. In this week's EVE Evolved, I experiment with PvP setups for the newly revamped Typhoon, Armageddon, Scorpion, and Dominix battleships.
Brendan Drain06.16.2013
EVE Evolved: Five awesome carrier tactics
The world of EVE Online's capital warfare is most often a numbers game. Alliances commit forces to a fight knowing that victory is almost assured if they have significantly more ships than the enemy. But not all capital pilots and corporations are created equal; some can pull off incredible tactical plays that act as force multipliers, increasing the effectiveness of every man on the battlefield. Rooks and Kings alliance has a long history of fighting above its weight by employing highly effective cooperative strategies, so it's no surprise that four out of my five top capital tactics come from the alliance's awesome PvP videos. I think it's safe to say that if Rooks and Kings brings fewer capital ships than you to a fight, you're still vastly outnumbered. In this week's EVE Evolved, I showcase videos of five awesome carrier tactics, each with a video of the tactic in action.
Brendan Drain07.01.2012
Light-based 'Metatronics' chip melts minds, not copper
Engineers at the University of Pennsylvania have flipped the switch on a new type of computer circuit. Unlike conventional silicon, the new chip uses light -- not electricity -- to perform its logic. By creating an array of nano-rods, light-flow can be treated like voltage and current. These rods can then be configured to emulate electrical components such as resistors, inductors and capacitors. The benefits of the so-called "metatronic" system would be smaller, faster and more efficient computer chips, which is clearly a welcome prospect. Another curious property the team discovered, is what it calls "stereo-circuitry." Effectively one set of nano-rods can act as two different circuits, depending on the plane of the field. This means your CPU could become a GPU just by changing the signal. We can't speak for the light itself, but our minds are certainly bent.
James Trew02.26.2012
Samsung may cough up millions over kaput TVs
A class action lawsuit filed by owners of faulty Sammy TVs has finally reached a settlement. The manufacturer has promised to foot the bill for new repairs, reimburse for previous repairs and hand out up to $300 to customers who no longer possess their broken TVs but can prove they once did. The fault can affects any of the models listed above -- possibly up to seven million sets in total -- and centers on an errant capacitor in the power circuit that stops the TV turning on, makes it slow to turn on, produces a "clicking sound" or makes it cycle on and off. If you think you're affected then check the source link for details on what to do next. Curious to know how much the lawyers got? A cool half-million for their troubles, which means they'll be upgrading to OLED.Update: A Samsung spokesperson offered up the following response, Approximately 1 percent of Samsung televisions sold in the U.S. from 2006 to 2008 have experienced some performance issues caused by a component called a capacitor. Since originally confirming this issue in early 2010, Samsung has voluntarily provided free repairs for U.S. customers with affected televisions. Recently, a nationwide class settlement covering all affected televisions in the U.S. was reached in Russell, et al. v. Samsung Electronics America, Inc., a lawsuit filed in the District Court of Oklahoma County in the U.S.
Sharif Sakr02.23.2012
Genius DX-ECO wireless mouse has no battery, charges in three minutes anyway
Hip on recharging your wireless rodent every single day? How about if it only takes three minutes? A single day's juice per charge might be unacceptable for most peripherals, but we're ready to make an exception for Genius' DX-ECO wireless mouse. This adjustable 800 / 1600 DPI clicker swaps out a recharge battery for a "gold," or electric double-layer capacitor -- you may know it as a super, or ultracapacitor. A step towards a battery-free existence not enough for you? Fine, bask in the knowledge that the DX-ECO also features a carpet, marble and sofa friendly "BlueEye" sensor. Read on for the official PR. Us? We're off to fantasize about battery free electric vehicles.
Sean Buckley01.19.2012
Mazda's i-ELOOP does regenerative braking with capacitors instead of batteries
Mazda has decided there's simply no reason why hybrid cars and EVs should have all of the regenerative braking fun. Its new system, called i-ELOOP, is aimed at traditional internal combustion vehicles. But, rather than rely on batteries, the company turned to capacitors which can be charged and discharged in just seconds. The electricity generated is then fed to the car's various electronic components after being passed through a converter to step down the voltage to 12v. By alleviating some of the burden to generate power from the engine Mazda claims it can increase fuel efficiency by up to ten percent. You won't have to wait long to see this tech make it into your next ride either, the world's first capacitor-based regenerative braking system should be making its retail debut sometime in 2012. Check out the PR after the break.
Terrence O'Brien11.26.2011
Nissan's new charging technology will juice your EV in ten minutes, ten years from now
Nearly a month after unveiling its revamped quick charger, Nissan has now announced that it's working on new technology that would make EV charging... well, quicker. A lot quicker. Developed alongside researchers from Japan's Kansai University, the manufacturer's approach would allow drivers to fully charge their plug-ins in just ten minutes, without taking any toll on a lithium-ion battery's storage or voltage. Nissan says it could achieve this by tinkering with a charger's capacitor -- more specifically, by replacing its carbon electrode with one based on a composite of tungsten oxide and vanadium oxide. Industry insiders, however, say this technology may not reach the commercial level for another ten years -- substantially longer than ten minutes.
Amar Toor10.11.2011
Ferroelectric transistor memory could run on 99 percent less power than flash
We've been keeping an optimistic eye on the progress of Ferroelectric Random Access Memory (FeRAM) for a few years now, not least because it offers the tantalizing promise of 1.6GB/s read and write speeds and crazy data densities. But researchers at Purdue University reckon we've been looking in the wrong place this whole time: the real action is with their development of FeTRAM, which adds an all-important 'T' for 'Transistor'. Made by combining silicon nanowires with a ferroelectric polymer, Purdue's material holds onto its 0 or 1 polarity even after being read, whereas readouts from capacitor-based FeRAM are destructive. Although still at the experimental stage, this new type of memory could boost speeds while also reducing power consumption by 99 percent. Quick, somebody file a patent. Oh, they already did.
Sharif Sakr09.28.2011
EVE Evolved: Flying the Dominix
Of all the ships I've flown over the years in EVE Online, the Gallente Dominix remains one of my absolute favourites. It's big, it's slow, and it looks like an upside-down mouldy shoe, but it's forever been one of the most versatile battleships in the game. With a massive bonus of 10% to drone damage and hitpoints per level of the Gallente Battleship skill, the Dominix can easily deal around 500 damage per second just with its drones. It can take on targets of any size by switching to medium or light drones and can field a full rack of six railguns or blasters to push its damage even higher. In PvE, the Dominix can be set up as a long-range damage platform for blitzing missions, a salvaging platform relying only on drone damage, or even a heavily tanked ship that will take all the damage while your drones automatically kill everything in sight. For PvP, the Dominix can be used for short-range damage, sniping, remote repair support, electronic warfare support, spider-tanking, capacitor warfare, and other roles. It can shield tank or armour tank and can even be set up with a reasonable hull tank for a surprise factor. In this week's EVE Evolved, I give two viable PvE fittings for the Dominix and two of my favourite PvP setups, along with advice on how to use each setup to its fullest.
Brendan Drain08.14.2011
Tesla CEO Musk says the days of batteries are numbered, ultracapacitors will power us into the future
The upcoming Tesla Model S has a big 'ol slab of batteries that make up the floor of the thing, shown above, but Tesla CEO Elon Musk says that sort of technology just won't do in the long run. He thinks that the days of the battery are numbered, and that it's the humble capacitor that will "supercede" traditional cells and let our future selves roam wild in our Teslas, largely free of range anxiety. Ultracapacitors are basically big, powerful versions of the capacitors that make all electronics work. Like a battery they hold a charge, but unlike a battery they can be juiced up almost instantaneously and suffer virtually no degradation through cycle after cycle. The big problem now is energy density, where batteries still have their capacitive competition beat, but hopefully that'll change soon -- maybe in time for another of Musk's predictions to come true.
Tim Stevens03.22.2011
Diamond shaped supercapacitors could result in faster-charging, higher capacity batteries
Superconductors pass electricity with zero resistance and make stuff float. Superfluids have zero viscosity and can climb vertical walls to escape containers. Supercapacitors? Well, they don't do anything quite so dramatic, but they could result in batteries that charge faster and hold more charge than ever. Capacitors in general have to run a balance between capacity and fast charging, but these fancy ones with diamond-shaped nanopores in zeolite-templated carbon, developed at Tohoku University in Sendai, Japan, are said to offer the best of both worlds. How good? Cellphones that charge in minutes, electric cars with longer lasting batteries, and free Superman Underoos for all. Naturally there's no word on when these things might actually escape the lab and show up in real batteries, but you already knew that, didn't you.
Tim Stevens01.27.2011
Dell responds to latest capacitor-related fallout, ignores the whole lying to consumers part
The "capacitor plague" issue of the early 2000's has started to resurface, not thanks to another batch of bogus orange-hued electrolytes popping free, but this time thanks to the release of documents relating to a three year-old Dell lawsuit. As we reported earlier this week, those docs show that Dell asked customer service reps to deny there was any problem with their motherboards, telling them to pretend they'd never heard about the issue and to "emphasize uncertainty." Now, Dell is responding to the latest flare up -- sort of. A post on the Direct2Dell blog reiterates that this was an industry-wide issue, which it was, but more or less ignores the crux of this latest report: those internal memos telling CSRs to play stupid while corporate IT departments panicked as OptiPlex desktops died left and right. (Boxes manufactured during those troublesome years would ultimately achieve an amazing 97 percent failure rate.) Dell also points out that AIT, the company that raised this particular lawsuit, was improperly using its OptiPlex machines as servers and not as mere desktops. That sounds an awful lot like sour grapes to us -- or should we say sour electrolytes?
Tim Stevens07.02.2010
Documents show that Dell knowingly sold defective computers, misled those needing support
What happens when capacitors go bad, spewing out their tangerine innards like the ones in the photo above? Components die. In the early to mid naughties there was a rash of failures, the so-called "capacitor plague" that affected many manufacturers thanks to millions of bogus units filled with an electrolyte mixture that was a bit off. However, nobody was quite affected like Dell. The company took a $300 million charge in 2005 to cover costs related to the faulty machines that went out with these components, and now we're getting a better picture of just how bad it was -- and continues to be. According to recently released documents stemming from a three year-old lawsuit, Dell not only knew about the bogus components but some of its employees were actively told to play dumb, one memo sent to customer service reps telling them to "avoid all language indicating the boards were bad or had issues." Meanwhile, sales teams were still selling funky OptiPlex machines, which during that period had a 97 percent failure rate according to Dell's own study. (And you thought the Xbox 360 had problems.) With that on the minds of shoppers, plus Throttlegate and some other recent laptop quality issues, we have to think consumer confidence for Dell must be at an all-time low at the moment. [Image courtesy of Bushtails]
Tim Stevens06.30.2010
Exploding Shuffle
Kids, take care of your iPods. They entertain you, keep you company, and act as a status symbol (even though you deny it). And, if one day your shuffle decides to go belly up, lay it to rest peacefully by sending it to the big iPod recycling plant in the sky. What you should by no means do is attempt to repair said shuffle by stabbing it with a large metal knife, lest you end up like this foolish fellow who hit a capacitor and had the iPod explode in his face.In all seriousness though, whenever you are planning to open up any kind of electronic device, think first, and think twice. I've been bit more than a few times by capacitors that I hadn't properly discharged, especially when repairing cameras. Via our sassy sister, Engadget.
Dan Lurie06.19.2006
MIT developing hairy capacitors, Energizer Bunny weeps
Check it grandpa, 'cause your 18th century inventions are set to change modern portable electronics in a big way. Those neomaxizoomdweebies over at MIT have discovered a process whereby capacitors -- those little stored energy devices knocking dim-witted TV tinkerers on their asses for decades -- can be slathered at the electrodes with nanotubes thereby increasing the surface density to store more energy. So just like a thick fuzzy towel soaks up more slop than a bedside sock, these new capacitors can be kept small and store the equivalent energy of today's chemical batteries. Why do you care? Well, the device could potentially be recharged hundreds of thousands of times and in only a matter of seconds saving you time and the environment, heartburn. Prototypes are expected within the next few months with actual product hitting the market in less than five years. Fuel cells, fool cells, bring on the capacitors!
Thomas Ricker06.09.2006