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Friday, March 25, 2011

Samsung starts baking 30nm 4Gb LPDDR2 chips, packaging 2GB mobile RAM in April

Source: http://www.engadget.com/2011/03/25/samsung-starts-baking-30nm-4gb-lpddr2-chips-packaging-2gb-mobil/

When it comes to mobile RAM, capacity is often what pops to mind first while we overlook speed and power consumption, but Samsung's latest delivery is worth the extra attention. Earlier this month, said Korean giant started producing 30nm 4Gb 1066Mbps LPDDR2 (or simply Mobile DDR2) chips, in order to phase out its 40nm ones that topped 2Gb at a 800Mbps transmission rate. To put it in perspective, a 40nm 1GB package consists of four 2Gb chips, whereas the new 30nm one will only need two 4Gb chips, thus reducing the package thickness by 20 percent (down to 0.8mm) and power consumption by 25 percent. It's hard to tell when we'll start seeing these bits of silicon entering the consumer market, but Samsung's already stamping out 1GB modules this month, with a 2GB version to follow next month. Oh yes, we're definitely liking the sound of 2GB RAM for mobile phones.

Samsung starts baking 30nm 4Gb LPDDR2 chips, packaging 2GB mobile RAM in April originally appeared on Engadget on Fri, 25 Mar 2011 11:57:00 EDT. Please see our terms for use of feeds.

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Google Nexus S 4G for Sprint hands-on (video)

Source: http://www.engadget.com/2011/03/24/google-nexus-s-4g-for-sprint-hands-on/

We finally got our hands on the elusive Samsung Nexus S 4G for Sprint at CTIA here today and it's pretty much what you'd expect: a Nexus S with its GSM / HSPA radio swapped for a set of Sprint-compatible CDMA / EV-DO and WiMAX radios. While the Nexus S 4G lacks a SIM slot, it's actually 0.3mm thicker than the Nexus S -- that's the thickness of a business card, and is meaningless for all practical purposes. The phone also features a 4G signal indicator in the status bar, along with a 4G sub-menu in the wireless settings. Our demo unit was running Android 2.3.4 (!) -- a version we have not yet come across -- but we were told that neither the hardware nor the software are final at this point. So don't be surprised if the production model receives a few tweaks before launch. Perhaps a Sprint logo? Enjoy the gallery below, and hop past the break for our hands-on video.

Gallery: Google Nexus S 4G for Sprint hands-on

Continue reading Google Nexus S 4G for Sprint hands-on (video)

Google Nexus S 4G for Sprint hands-on (video) originally appeared on Engadget on Thu, 24 Mar 2011 18:28:00 EDT. Please see our terms for use of feeds.

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Google Voice for Sprint hands-on (video)

Source: http://www.engadget.com/2011/03/24/google-voice-for-sprint-hands-on/

Remember that Google Voice integration for Sprint we mentioned recently? Today at CTIA we got to see it in action, and it promises to take us one step closer to our robot overlords -- well, those of us who are Sprint customers, anyway. The most exciting feature is that the integration works with almost any Sprint number and device, and is not limited to just smartphones or the newly minted Nexus S 4G. Basically, you can pick your Sprint number or your Google Voice number to be your mobile number, and switch between them if necessary. Either way, this is the number that appears on other people's phones when you call them, and you still benefit from all the Google Voice perks. See it for yourself in our video after the break.

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Google Voice for Sprint hands-on (video) originally appeared on Engadget on Thu, 24 Mar 2011 18:49:00 EDT. Please see our terms for use of feeds.

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University of Twente's new lens reveals the sub-100nm level with visible light

Source: http://www.engadget.com/2011/03/24/university-of-twentes-new-lens-reveals-the-sub-100nm-level-with/

Small is beautiful, but only when you can see it. Specifically, we're talking about nanostructures -- including cellular organelles and nanoelectronic circuits -- around the order of 100nm. The problem is with a microscope, visible light only takes us down to a resolution of 200nm at best, and it's not always ideal to use conventional methods to boost the resolution -- you'd either have to dope the subject with fluorescent dye or use highly delicate equipment. Thankfully, the University of Twente has come up with a new type of lens that would solve this problem: in a nutshell, a nanoparticle is placed on one side of the gallium phosphide lens, while the other side -- disorderedly etched with acid -- takes in a precisely modulated laser beam and scatters it into a focal point of your choice. Sure, this sounds bizarre and ironic, but apparently the modulation is controlled in such a way that the scattered beam focuses much tighter than an ordinary beam would using an ordinary lens. Have a look at the comparison shots of some gold nanoparticles after the break -- that's some sweet 97nm resolution right there for ya.

Continue reading University of Twente's new lens reveals the sub-100nm level with visible light

University of Twente's new lens reveals the sub-100nm level with visible light originally appeared on Engadget on Thu, 24 Mar 2011 23:50:00 EDT. Please see our terms for use of feeds.

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Styrofoam touches electrodes to create incredibly fast-charging wonderbatteries

Source: http://www.engadget.com/2011/03/25/styrofoam-touches-electrodes-to-create-incredibly-fast-charging/

Elon Musk's heart may have already given up on the humble battery, lusting after capacitors, but researchers at the University of Illinois have think there's life in the 'ol cells yet, creating batteries that charge and discharge in seconds. They've found a way to create electrodes using polystyrene beads as a sort of substrate, tiny spheres helping to set the porosity of either the nickel-metal hydride or lithium-manganese capacitor material. By adjusting the size and density of the bean bag innards the team was able to create an electrode porosity of 94 percent, which is just a few ticks short of theoretically ideal for exposing the maximum surface area of the electrode to the battery material. This results in extremely fast charges and discharges, the NiMH cell hitting 90 percent capacity in just 20 seconds and discharging in as quickly as 2.7 seconds. While we don't know just what kind of charging system the team was using to achieve this, even assuming a high-amperage stream of electrons this is still a remarkable feat. But, like most major advances there's a drawback: similar to Toshiba's SCiB batts the capacity of these cells is only about three quarters what it would be using normal battery construction, meaning you'd need roughly 25 percent more mass to get the same range in your ultra-fast charging EV of the future. That might just be a worthy trade-off.

Styrofoam touches electrodes to create incredibly fast-charging wonderbatteries originally appeared on Engadget on Fri, 25 Mar 2011 00:29:00 EDT. Please see our terms for use of feeds.

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