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Scientists have created, synthesized, and analyzed a new class of fluorophores, which are luminous chemical compounds. These are the new bullet systems based on cyanopyrazine. According to research, the inclusion of cyanogroup compounds in fluorophores considerably boosts the efficiency of organic light-emitting diodes (OLED). This indicates they can be utilized to develop new materials to improve the brightness of smartphone, computer, and television screens. The researchers’ findings were recently published in the journal Dyes and Pigments.

The research was led by Egor Verbitskiy, the director of the Postovsky Institute of Organic Synthesis Ural Branch of RAS and a member of the Laboratory of Medical Chemistry and Advanced Organic Materials at the Ural Federal University. He states that physicists were aware that introducing cyanogroups to fluorophores can enhance the OLEDs’ properties and overall efficiency.

A team of quantum engineers at UNSW Sydney has developed a method to reset a quantum computer—that is, to prepare a quantum bit in the ‘0’ state—with very high confidence, as needed for reliable quantum computations. The method is surprisingly simple: it is related to the old concept of ‘Maxwell’s demon’, an omniscient being that can separate a gas into hot and cold by watching the speed of the individual molecules.

“Here we used a much more modern ‘demon’—a fast digital voltmeter—to watch the temperature of an electron drawn at random from a warm pool of electrons. In doing so, we made it much colder than the pool it came from, and this corresponds to a high certainty of it being in the ‘0’ computational state,” says Professor Andrea Morello of UNSW, who led the team.

Continue reading “New quantum computing feat is a modern twist on a 150-year-old thought experiment” »

Cooling accounts for about 15 percent of global energy consumption. Conventional clear windows allow the sun to heat up interior spaces, which energy-guzzling air-conditioners must then cool down. But what if a window could help cool the room, use no energy and preserve the view?

Tengfei Luo, the Dorini Family Professor of Energy Studies at the University of Notre Dame, and postdoctoral associate Seongmin Kim have devised a transparent coating for windows that does just that (ACS Energy Letters, “High-Performance Transparent Radiative Cooler Designed by Quantum Computing”).

The coating, or transparent radiative cooler (TRC), allows visible light to come in and keeps other heat-producing light out. The researchers estimate that this invention can reduce electric cooling costs by one-third in hot climates compared to conventional glass windows.

Researchers have reported a new vulnerability in Acer laptops that could be potentially weaponized to disable UEFI Secure Boot protection.

Ideas for quantum computing change the way we think about space and time.

November 28th, 2022 – GIGABYTE TECHNOLOGY Co. Ltd, a leading manufacturer of motherboards, graphics cards, and hardware solutions, today announced to extend the instant 6GHz technology designed for Intel® Core™ i9-13900K and Core™ i7-13700K processors to the Z690 platform. By simply upgrading the latest BIOS of Z690 motherboards and activating the relevant settings, users can optimize their Intel® Core™ i9-13900K and Core™ i7-13700K processors to 6GHz for the performance boost on single-core up to 3%. This enables users who stay with the existing Z690 platform can enjoy the performance enhancement of the new CPU as well.

The latest Intel® 13th gen processor has impressed users with its class-leading performance. GIGABYTE’s Instant 6GHz on the Z790 platform was renowned for unleashing the performance of Intel® Core™ i9-13900K and Core™ i7-13700K processors for users in an easier way and is now employed on the Z690 platform. By simply upgrading the latest BIOS with Instant 6GHz activated, the system can automatically tweak CPU voltage and Vcore Load Line Calibration of Intel® Core™ i9-13900K and Core™ i7-13700K processors to detect the most two optimized cores running at 6GHz frequency. This further delivers a 3% performance boost on one single core like the Z790 platform.

GIGABYTE motherboards are notable for their exclusive VRM design, thermal design, and fine-tuning for convenience. To provide a superior user experience and maximum benefits to users, GIGABYTE brings Instant 6GHz technology to the Z690 platform for those who use Intel® 13th gen processor without upgrading to Z790 motherboards can also get a performance boost with ease.

Samsung has introduced (opens in new tab) its all-new type of GDDR6 memory that doubles the DRAM package’s capacity and increases interface width to double its peak bandwidth. Samsung’s GDDR6W chips use traditional BGA packaging and can be used for mainstream applications like the best graphics cards.

Contemporary GDDR6 and GDDR6X chips integrate one DRAM device with a 32-bit interface. By contrast, a GDDR6W chip packs two DRAM devices featuring and therefore features two 32-bit interfaces, thus doubling capacity (from 16Gb to 32Gb per chip) as well as interface width (from 32-bits to 64 bits). To do so, Samsung’s GDDR6W chips use the company’s Fan-Out Wafer-Level Packaging (FOWLP) technology that replaces traditional printed circuit board with a redistribution layer (RDL) that is thinner and has significantly finer wiring patterns.

Samsung’s GDDR6W devices generally use the same protocols as GDDR6 but offer higher performance and capacity. For example, a 32Gb GDDR6W memory chip could deliver a peak bandwidth of 176 GBps, up from 88 GBps in the case of a regular GDDR6 SGRAM chip. Meanwhile, building a 32Gb memory chip using two 16Gb memory devices might be cheaper than building a 32Gb monolithic memory device.

D-Wave Systems, a pioneer in quantum annealing-based computing, today announced significant upgrades to its constrained quadratic model (CQM) hybrid solver that should make it easier to use and able to tackle much larger problems, said the company. The model can now handle optimization problems with up to 1 million variables (including continuous variables) and 100,000 constraints. In addition, D-Wave has introduced a “new [pre-solver] set of fast classical algorithms that reduces the size of the problem and allows for larger models to be submitted to the hybrid solver.”

While talk of using hybrid quantum-classical solutions has intensified recently among the gate-based quantum computer developer community, D-Wave has actively explored hybrid approaches for use with its quantum annealing computers for some time. It introduced a hybrid solver service (HSS) as part its Leap web access portal and Ocean SDK development kit that D-Wave in 2020. The broad hybrid idea is to use classical compute resources where they make sense – for example, GPUs perform matrix multiplication faster – and use quantum resources where they add benefit.

Continue reading “Quantum Annealing Pioneer D-Wave Introduces Expanded Hybrid Solver” »

Chipmakers are looking for ways to boost speed as the end of Moore’s Law looms. Do silicon photonic chips hold the key?