Monday, January 30, 2017

Explosions may be the answer to mass-producing graphene

Source: https://www.engadget.com/2017/01/30/explosions-may-be-the-answer-to-mass-producing-graphene/

Graphene is difficult and expensive to mass produce, but while trying to make something else altogether, Kansas State University (KSU) scientists may have lucked into a promising technique. The team was attempting to make carbon soot aerosol gels by detonating acetylene gas and oxygen with a spark plug. That yielded soot resembling "black angel food cake," according to lead researcher Chris Sorensen. It proved to be graphene, a discovery that could pave the way for cheaper manufacturing of lightweight but incredibly strong materials, superconductors, and more.

Graphene consists of bonded carbon that's just one atom thick, making it one of the lightest, strongest materials out there. It also has interesting electrical properties and has shown tons of experimental promise for rapid-charging "supercapacitor" batteries, solar cells and superconductors. However, more widespread use is limited by its cost -- methods like chemical "cooking" and high temperature heating have proven to be low-yield, expensive and even dangerous.

The KSU team's technique simply requires an oxidizing agent like oxygen or air, acetylene or other hydrocarbons and a spark, according to a patent it filed. The resulting detonation creates a 3,000 degree K temperature inside the vessel, enough to create pure graphene stacked in single, double or triple sheets. "What might be the best property of all is that the energy required to make a gram of graphene through our process is much less than other processes because all it takes is a single spark," Sorenson said.

The researchers are now working to improve the quality of the graphene and scale it up to industrial levels. The aim is to get the material out of the chamber several seconds after the detonation, so it doesn't form into an aerogel. However, the technique seems far along along already compared to other types of promising research, which often never leaves the lab. "The real charm of our experiment is that we can produce graphene in the quantity of grams rather than milligrams," says post-doc researcher Arjun Nepal.

Source: Kansas State University

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Thursday, January 26, 2017

LG's G6 reportedly packs Google Assistant instead of Alexa

Source: https://www.engadget.com/2017/01/26/lgs-g6-may-nix-removable-battery-in-favor-of-water-resistance/

LG's G6 smartphone is a leaky flagship: CNET is reporting some good and bad points about the company's incoming G6 we've already heard. It will be water-resistant. Great! But it won't have a removable battery. Not so great. While phones with batteries that can be removed (and often swapped out by power-hungry power users), are increasingly rare, it's recently given LG a notable selling point.

What's more, CNET says the handset will feature Google Assistant as its virtual companion instead of Amazon's Alexa. According to the report, LG planned on using Alexa like it does in a number of other products, but the integration wasn't ready for prime time. If you prefer Amazon's virtual assistant, CNET says LG will still likely ship phones with the feature at some point in 2017.

Now it's appears that the G6 going to be an awful lot like the rest: slender bezels, curved corners, metallic shimmering finish, inside and out. The battery choice was done to ensure that water resistance happened, apparently. Given how its unusual modular experiment didn't set the world on fire, it's hard to blame them... from a business view at least.

Is it a case of can't beat them, join them? LG's smartphone arm still weighs down its financial figures, and it's selling less phones than recent years. The teasers and leaks don't suggest anything game-changing, but it might be the right time for LG to strike with a populist, more normal, smartphone that can draw in anyone still wary of buying a Samsung smartphone upgrade. That said, LG still has to fend of cheaper Chinese rivals, Google's own phones, and of course, the iPhone. With what seems like an unremarkable design and water-resistance be enough cut it? Let's see the full reveal first: perhaps the company has a few more tricks up its sleeve.

Source: CNET

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Facebook offers extra security with USB key support

Source: https://www.engadget.com/2017/01/26/facebook-two-factor-usb-security-keys/

None of us want strangers accessing our accounts online. You might use a password manager, or two-factor authentication via SMS, but there's another way you can stay protected -- physical security keys. Following Google, Dropbox and others, Facebook has added support for these privacy-centric dongles today. When you log into your account, that means you can choose to prove your identity with a special USB stick, rather than a code sent to your phone. Yes, it's another object to keep on your keychain, but in return you'll be getting a superior level of protection.

Physical keys are supposed to be more effective than mobile apps and SMS verification, because there's no chance of phishing or man-in-the-middle attacks. They're also potentially faster -- just a tap on the physical key and you should have access to your Facebook account. It's a welcome move from the company, which is also announcing a redesigned Privacy Basics page today. Neither service is mandatory, but it's good to know they exist for Facebook's more privacy conscious users. Cyberattacks and identity theft are on the rise -- it's never a bad time to strengthen your defences.

Source: Facebook

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Gmail will start blocking JavaScript attachments in February

Source: https://www.engadget.com/2017/01/26/gmail-block-javascript-attachments/

If you want to email a .js file to somebody for any reason, you only have a few more days to do so through Gmail. The service will start blocking JavaScript file attachments starting on February 13th, adding it to its list of restricted file types, which includes .exe, .msc and .bat. If you try to attach a .js file on or after the 13th, you'll get a notification that says it's blocked "because its content presents a potential security issue."

JavaScript files aren't inherently bad, but people could attach them to emails so that when you click on one, it acts as a downloader for a ransomware or other types of malware. Gmail can detect .js files even if they're sent as a .zip, a .tgz, a .gz or a .bz2. In case you really have to send one to a friend or a co-worker, the big G recommends uploading it to Google Drive instead.

Source: G Suite updates

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Wednesday, January 25, 2017

Japan Display battles Samsung's OLED with curved LCD screens

Source: https://www.engadget.com/2017/01/25/japan-display-battles-samsungs-oled-with-curved-lcd-screens/

One of Apple's main screen suppliers, Japan Display Inc. (JDI), has revealed a 5.5-inch LCD smartphone screen that can be bent like OLED displays from Samsung and LG. While not quite as flexible and thin as OLED, the "Full Active Flex" 1080p screen could be used in phones with curved screens like the Galaxy S7 Edge, the company told the Wall Street Journal. LCD is a lot cheaper than OLED, so you could see a lot more curved phone designs when it starts manufacturing the panels in 2018.

Since LCD displays usually have a glass backing, it's been difficult to curve them until now. Japan Display got around that issue by using plastic for both side of the liquid crystal layer. That allows not only a flexible screen, but could also help "prevent cracking from occurring when the display is dropped," the company said. It also hopes to adapt the screens for other products, including car displays and laptops.

Japan Display also told the WSJ that it has launch customers for the screens, though it wouldn't say whether Apple or any other company was among those. Rumors of an OLED iPhone have been bubbling up recently, but some analysts think that all the OLED suppliers combined couldn't meet Apple's needs until at least 2018. If Cook and company decided to try curved screens, however, the LCD models from JDI now give them a future option besides OLED.

Source: Japan Display

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