Microsoft’s unusual experiment in the sea off Orkney seems to have provided some valuable lessons.
Category: computing – Page 573
Physicists from MIPT and the Russian Quantum Center, joined by colleagues from Saratov State University and Michigan Technological University, have demonstrated new methods for controlling spin waves in nanostructured bismuth iron garnet films via short laser pulses. Presented in Nano Letters, the solution has potential for applications in energy-efficient information transfer and spin-based quantum computing.
A particle’s spin is its intrinsic angular momentum, which always has a direction. In magnetized materials, the spins all point in one direction. A local disruption of this magnetic order is accompanied by the propagation of spin waves, whose quanta are known as magnons.
Unlike the electrical current, spin wave propagation does not involve a transfer of matter. As a result, using magnons rather than electrons to transmit information leads to much smaller thermal losses. Data can be encoded in the phase or amplitude of a spin wave and processed via wave interference or nonlinear effects.
The FCC authorized Microsoft to perform proof-of-concept demonstrations of a service that would connect its cloud computing service Azure with a ground station the company proposed to build.
“If the demonstrations result in significant market interest, Microsoft will file an application for regular earth station authority with the International Bureau (IB) to support future commercial operations,” the company wrote in the filings.
The company’s strategy will put it in competition with Amazon, which in November 2018 launched its similar AWS Ground Station service.
Microsoft is looking to compete with Amazon with a service that connects satellites directly to a cloud computing network.
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Magnetism offers new ways to create more powerful and energy-efficient computers, but the realization of magnetic computing on the nanoscale is a challenging task. A critical advancement in the field of ultralow power computation using magnetic waves is reported by a joint team from Kaiserslautern, Jena and Vienna in the journal Nano Letters.
A local disturbance in the magnetic order of a magnet can propagate across a material in the form of a wave. These waves are known as spin waves and their associated quasi-particles are called magnons. Scientists from the Technische Universität Kaiserslautern, Innovent e. V. Jena and the University of Vienna are known for their expertise in the research field called ‘magnonics,’ which utilizes magnons for the development of novel types of computers, potentially complementing the conventional electron-based processors used nowadays.
“A new generation of computers using magnons could be more powerful and, above all, consume less energy. One major prerequisite is that we are able to fabricate, so-called single-mode waveguides, which enable us to use advanced wave-based signal processing schemes,” says Junior Professor Philipp Pirro, one of the leading scientists of the project. “This requires pushing the sizes of our structures into the nanometer range. The development of such conduits opens, for example, an access to the development of neuromorphic computing systems inspired by the functionalities of the human brain.”
Materials scientists at Duke University have uncovered an atomic mechanism that makes certain thermoelectric materials incredibly efficient near high-temperature phase transitions. The information will help fill critical knowledge gaps in the computational modeling of such materials, potentially allowing researchers to discover new and better options for technologies that rely on transforming heat into electricity.
The results appear online on September 4 in the journal Nature Communications.
Thermoelectric materials convert heat into electricity when electrons migrate from the hot side of the material to the cold side. Because providing a temperature difference between its two sides is required, researchers are interested in trying to use these materials to generate electricity from the heat of a car’s tailpipe or recovering energy lost as heat in power plants.
In time for Nvidia’s Ampere RTX 30-series launch, graphics cards makers slash prices of existing boards.
After an internal investigation, the US Department of Defense (DoD) announced that is standing by its decision to award the $10 billion JEDI cloud computing contract to Microsoft and not Amazon. The probe was triggered after Amazon complained that the integrity of the bidding process was cast into doubt because of statements by President Trump.
The Pentagon affirmed its initial decision awarding the contract to Microsoft, but acknowledged that the legal battle isn’t over. In a press release, it said it “determined that Microsoft’s proposal continues to represent the best value to the government” but added that the contract “will not begin immediately.” That’s because of a temporary injunction issued over an Amazon lawsuit arguing that the contract had “clear deficiencies, errors and unmistakable bias.”
Quantum technologies, such as quantum computers, quantum sensing devices and quantum memory, have often been found to outperform traditional electronics in speed and performance, and could thus soon help humans to tackle a variety of problems more efficiently. Despite their huge potential, most quantum systems are inherently susceptible to errors and noise, which poses a serious challenge to implementing and using them in real-world settings.
If Mad Max bikes were electric they would probably look like this design rendering from Shane Baxley. An electric power unit, orbital wheels, two-sided swingarm, manual transmission and a raw minimalistic bodywork complete the package.
Hollywood-based concept artist and vehicle designer Shane Baxley created this motorcycle design rendering on his computer. And it looks mind-boggling. The electric motorcycle design features cyberpunk lines and wheels without hubs. The idea of a hubless wheel bike is not new as it was conceived by an Italian designer, Franco Sbarro, in the 1980s.
To create a striking visual effect, the electric motorcycle is fitted with spokeless wheels equipped with knobby tires. As we said before, the wheels are hubless and the functionality of the wheel hub is taken over by the rim while the two-sided swingarm is connected to the inside of the bike at three points at the front and rear.
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Massive multi-gigapixel images are starting to become a little more common now, with today’s computing power being what it is. But they still rarely fail to impress. Especially when they cover vast distances and include a lot of detail to zoom in on. This massive 195-Gigapixel image comes from Shanghai, shot from the top of Shanghai’s Oriental Pearl Tower.