rtoz writes: The Chinese smartphone company Huawei has unveiled their new quick charging lithium-ion batteries at the 56th Battery Symposium in Japan. Using next generation technology, these new batteries have achieved a charging speed 10 times faster than that of normal batteries, reaching about 50% capacity in mere minutes.
Huawei presented videos of the two types of quick charging lithium-ion batteries: one battery with a 600 mAh capacity that can be charged to 68% capacity in two minutes; and another with a 3000 mAh capacity which can be charged to 48% capacity in five minutes to allow ten hours of phone call on Huawei mobile phones.
According to Huawei, the company bonded heteroatoms to the molecule of graphite in anode, which could be a catalyst for the capture and transmission of lithium through carbon bonds. Huawei stated that the heteroatoms increase the charging speed of batteries without decreasing energy density or battery life.
Huawei is confident that this breakthrough in quick charging batteries will lead to a new revolution in electronic devices, especially with regard to mobile phones, electric vehicles, wearable devices, and mobile power supplies.
rtoz writes: To work with computational models is to work in a world of unknowns: Models that simulate complex physical processes — from Earth’s changing climate to the performance of hypersonic combustion engines — are complex, sometimes incorporating hundreds of parameters, each of which describes a piece of the larger process.
Parameters are often question marks within their models, their contributions to the whole largely unknown. To estimate the value of each unknown parameter requires plugging in hundreds of values, and running the model each time to narrow in on an accurate value. This computation can take days, and sometimes weeks.
Now MIT researchers have developed a new algorithm that vastly reduces the computation of virtually any computational model. The algorithm may be thought of as a shrinking bull’s-eye that, over several runs of a model, and in combination with some relevant data points, incrementally narrows in on its target: a probability distribution of values for each unknown parameter.
With this method, the researchers were able to arrive at the same answer as a classic computational approaches, but 200 times faster.
The researchers have applied the algorithm to a complex model for simulating movement of sea ice in Antarctica, involving 24 unknown parameters, and found that the algorithm is 60 times faster arriving at an estimate than current methods. They plan to test the algorithm next on models of combustion systems for supersonic jets.
rtoz writes: Lumen is a new kind of flashlight that doesn't require any battery. It doesn't need any external energy source except your warm touch. It works by our body heat.
Heat of your body will be converted to Light when touching the keychain-sized lumen.
Lumen has relatively simple work principle. It has TEG (Thermoelectric Generator) — a small ceramic bar that can produce electric current when we provide temperature difference between upper and lower parts of TEG.
As you understand, we can't power really high-output LED just with touching small TEG. However, when your body temperature is 98 F and air temperature is 82 F Lumen produce about 15 mA@3v. i-e a difference of around 16 degrees Fahrenheit is enough to generate the energy required to power a LED light. When the difference in temperature is larger, the excess power is stored in a capacitor for future use.
rtoz writes: A Canadian space company named "Thoth Technology" has been granted the United States patent for a space elevator. The freestanding space tower is pneumatically pressurized and actively-guided over its base. Reaching 20 km above the planet, it would stand more than 20 times the height of current tall structures and be used for wind-energy generation, communications and tourism. The technology offers an exciting new way to access space using completely reusable hardware and saving more than 30% of the fuel of a conventional rocket.
Astronauts would ascend to 20 km by electrical elevator. From the top of the tower, space planes will launch in a single stage to orbit, returning to the top of the tower for refueling and reflight.
Although ascending to an altitude significantly below 35,000 km will not place a payload in Earth orbit, a platform supported by the space elevator tower has significant advantages over a surface-based launch platform. While surface-based rockets must be designed to overcome atmospheric air resistance, launch from a high-altitude platform has no such requirement, and, consequently, existing space equipment such as an orbital transfer stage or conventional upper stage can be used to insert payloads directly into Earth orbit. Ideally, payloads should be raised to the highest feasible altitude before launching in order to maximize the energy advantages; however, the energy advantages for space flight are readily leveraged above 5 km. The space elevator tower has a segmented elevator core structure, each segment being formed of at least one pneumatically pressurized cell. The pressure cells may be filled with air or another gas
Elevator cars may ascend or descend on the outer surface of the elevator core structure or in a shaft on the interior of the elevator core structure. The space elevator tower is stabilized by gyroscopic and active control machinery. The space elevator tower maintains a desired pressure level through gas compressor machinery.
rtoz writes: The world’s first entirely light-based memory chip to store data permanently has been developed by material scientists at Oxford University. The device makes use of materials used in CDs and DVDs, and it could help dramatically improve the speed of modern computing. Today’s computers are held back by the relatively slow transmission of electronic data between the processor and the memory. There’s no point using faster processors if the limiting factor is the shuttling of information to-and-from the memory. The researchers think using light can significantly speed this up.
Simply bridging the processor-memory gap with photons isn’t efficient, though, because of the need to convert them back into electronic signals at each end. Instead, memory and processing capabilities would need be light-based too. Researchers have tried to create this kind of photonic memory before, but the results have always been volatile, requiring power in order to store data. For many applications — such as computer disk drives — it’s essential to be able to store data indefinitely, with or without power. Now, an international team of researchers including researchers from Oxford University has produced the world’s first all-photonic nonvolatile memory chip. The new device uses the phase-change material Ge2Sb2Te5 (GST) — the same as that used in rewritable CDs and DVDs — to store data.
rtoz writes: Today Many people are changing their Facebook profile picture using a Tool provided by Facebook, for supporting Digital India initiative. We can use this tool from https://www.facebook.com/suppo...
But it seems Facebook is actually trying to promote its internet.org in the name of the digital India.
Based on the past business approach of Mark Zuckerberg, any one can easily understand this fact.
Now we can see the proof for this fact, by seeing the source code of the digital India profile setting page. We can see the Internet.org related stuff there. So, we can safely assume that Facebook is treating Internet.org and digital India as one thing. Facebook is facing difficulty in implementing internet.org in India because of the heavy opposition from Net Neutrality supporters. So, it seems Facebook is trying to use Modi's Digital India as shortcut or workaround to forcefully implement its internet.org in India.
rtoz writes: Scientists have devised an ultra-thin invisibility “skin” cloak that can conform to the shape of an object and hide it from detection with visible light. Although this cloak is only microscopic in size, the principles behind the technology should enable it to be scaled-up to conceal macroscopic items as well. Working with brick-like blocks of gold nanoantennas, the Berkeley researchers fashioned a “skin cloak” barely 80 nanometers in thickness, that was wrapped around a three-dimensional object about the size of a few biological cells and arbitrarily shaped with multiple bumps and dents. The surface of the skin cloak was meta-engineered to reroute reflected light waves so that the object was rendered invisible to optical detection when the cloak is activated. This is the first time a 3D object of arbitrary shape has been cloaked from visible light. This short video clip shows how the activation of a metasurface cloak made from an ultrathin layer of nanoantennas can render a 3D object invisible. When the cloak is turned “on,” the bump-shaped object being illuminated in the center white spot disappears from view. The object reappears when the cloak is turned “off.”
rtoz writes: Apple’s Siri interrupts a question about Barack Obama’s Iran policy on Thursday (10th September 2015) during a White House press briefing.
The Apple iPhone's virtual Personal Assistant Siri was saying "Sorry, I'm not sure what you want me to change", when a journalist asked White House spokesman Josh Earnest if Obama is disappointed at not getting Republican backing for the Iran nuclear agreement.
As the assembled journalists burst into laughter, Mr Earnest even cracked a smile on the podium.
rtoz writes: The Taiwanese company Acer has unveiled Revo Build, a modular computer at IFA 2015 Technology show in Berlin, Germany
The new Revo Build Series (M1-601) Mini PC takes a modular approach to allow consumers to customize their computer without opening up the chassis. “Blocks” with different features can be easily stacked on top of the base unit, which makes adding functionality as easy as playing with toy blocks. The “Blocks” are connected through pogo pins with magnetic alignment so that there’s no hassle with wires when swapping out modules. The Blocks can also work independently or with other PCs. The Revo Build M1-601 desktop is packaged in a tiny 1 liter chassis with a 125 x 125 mm footprint that takes up minimal space and can be placed almost anywhere.
“Blocks” such as the 500GB/1TB hot-swappable Portable Hard Drive will be available at launch, while a Wireless Power Bank for wireless charging, an Audio Block with speakers and microphones, and other expansion “Blocks” will be rolled out gradually.
The Acer Revo Build runs Windows 10 and is expected to retail at $300.
rtoz writes: British cell phone retailer Carphone Warehouse says personal details of up to 2.4 million customers may have been accessed after the company was hit by a cyber-attack. This security breach could have included names, addresses, dates of birth and bank details. Up to 90,000 customers may also have had their encrypted credit card information accessed. The affected division operates the OneStopPhoneShop.com, e2save.com and Mobiles.co.uk websites. It also provides services to iD Mobile, TalkTalk Mobile, Talk Mobile and some Carphone Warehouse customers.
Dixons Carphone was formed last year by the merger of Carphone Warehouse and Dixons Retail. Dixons Carphone operates in many European countries including Britain, Ireland and Germany. Carphone Warehouse said it was informing all customers who may have been affected of the breach. It will also advise affected individuals on how to reduce the risk of further consequences arising from the data leak.
According to the Reuters report, the slender WalkCar is made from aluminum and weighs between two and three kilograms , depending on whether it is an indoor or outdoor version.
The developer Saito expects to see many other uses for his transporter, as he says it has enough power to help people push wheelchairs with ease. The lightweight aluminum board is stronger than it looks, and can take loads of up to 120kg .
It reaches top speeds of 10 kilometers per hour, for distances of up to 12 kilometers after three hours of charging. Its developer says it's also extremely simple to ride. Once the rider stands on it the WalkCar starts automatically, while simply stepping off stops the vehicle. To change direction, the user just shifts their weight. Best of all, there is no need to find a parking space, because it fits into a small bag when not in use. Saito says customers will be able to reserve their own WalkCars from autumn 2015 on the crowd-funding website Kickstarter. The futuristic skateboard will have a price-tag of around $800. Shipping is expected to begin by spring 2016.
rtoz writes: Two computer-security researchers demonstrated they could take control of a moving Jeep Cherokee using the vehicle’s wireless communications system, raising new questions about the safety of Internet-connected cars.
Former National Security Agency hacker Charlie Miller, now at Twitter, and IOActive researcher Chris Valasek used a feature in the Fiat Chrysler telematics system Uconnect to break into a car being driven on the highway by a reporter for technology news site Wired.com.
The Hackers were able to get control of air-conditioning, radio, windshield wipers and transmission of the jeep remotely by sitting many miles away from the jeep.
Even they were able to disable the Brake of the jeep remotely.
Fiat Chrysler said it had issued a fix for the most serious vulnerability involved. The software patch is available for free on the company’s website and at dealerships.
Miller and Valasek have been probing car safety for years and have been among those warning that remote hacking was inevitable.
rtoz writes: Wearable electronic devices for health and fitness monitoring are a rapidly growing area of consumer electronics; one of their biggest limitations is the capacity of their tiny batteries to deliver enough power to transmit data. Now, researchers at MIT have found a promising new approach to delivering the short but intense bursts of power needed by such small devices.
The key is a new approach to making supercapacitors — devices that can store and release electrical power in such bursts, which are needed for brief transmissions of data from wearable devices such as heart-rate monitors, computers, or smartphones. They may also be useful for other applications where high power is needed in small volumes, such as autonomous microrobots.
The new approach uses yarns, made from nanowires of the element niobium, as the electrodes in tiny supercapacitors
Nanotechnology researchers have been working to increase the performance of supercapacitors for the past decade. Among nanomaterials, carbon-based nanoparticles — such as carbon nanotubes and graphene — have shown promising results, but they suffer from relatively low electrical conductivity
In this new work, the researchers have shown that desirable characteristics for such devices, such as high power density, are not unique to carbon-based nanoparticles, and that niobium nanowire yarn is a promising alternative.
rtoz writes: The 3D printing R&D company MX3D is planning to print a bridge across a canal in Amsterdam, Netherlands. It is hoped that the robots used will print their own supports and gradually move across the water, creating the bridge as they go. MX3D teams up with AutoDesk and few other companies to do this amazing work.
MX3D says the project is made feasible by its robotic 3D printing technology that effectively makes it possible to draw in mid-air. The multi-axis industrial robots to be used can print metals, plastics and combinations of materials.
For the bridge project, the robots will be printing in steel. They will use specially-designed arms that heat up the metal to 1,500 C before welding the structure. This approach means structures can be created that are strong, durable and complex. It will be as strong and as any other bridge. People will be able to walk back and forth over it for decades.
It is hoped that the entire process will take place on-site. And, it will be built over the course of two months in fall of 2017.
The researchers report that they have devised optical memory integrated into an optical fiber. The team created a way to stop and store the light that usually propagates in a fiber at a speed as fast as 200,000 km/sec. This capability represents an important advance in optical communications, as fibers are at the heart of our worldwide telecommunication system, but also for a future quantum Internet, in which quantum information can be transported and synchronized between interconnected nodes.
This work provides a demonstration of an all-fibered memory for light. The researchers have been able to store the light and release it later into the fiber
At the core of the device is a commercial fiber with a short section elongated to 400 nm in diameter where the light can efficiently interact with a cloud of laser-cooled atoms. Using the so-called electromagnetically induced transparency technique, which is well-known in free space but combined here for the first time with a fiber, the researchers slowed down the light pulse by 3,000-fold and then halted it completely.The information conveyed by the laser light is transferred to the atoms in the form of a collective excitation, a large quantum superposition. Around 2,000 cesium atoms very close to the fiber were involved in the process. Later, after a programmable period, the light was released into the fiber, reconstituting the initial encoded information that can once again travel. Storage times of up to 5 micro seconds were demonstrated, corresponding to a traveling distance of 1 km if the light had not been halted.
The experiment by the Paris team also showed that even light pulses containing only one photon can be stored, with a very large signal-to-noise ratio. This feature will enable the use of this device as a quantum memory, an essential ingredient for the creation of future quantum networks.