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Category: computing – Page 5

New organic thin-film tunnel transistors for wearable and other small electronics

To meet the growing demands of flexible and wearable electronic systems, such as smart watches and biomedical sensors, electronics engineers are seeking high-performance transistors that can efficiently modulate electrical current while maintaining mechanical flexibility.

Thin-film transistors (TFTs), which are comprised of thin layers of conducting, semiconducting and insulating materials, have proved to be particularly promising for large-area flexible and wearable electronics, while also enabling the creation of thinner displays and advanced sensors.

Despite their potential, the energy-efficiency with which these transistors can switch has proved difficult to improve. This is due to the so-called thermionic limit, a theoretical threshold that delineates the lowest possible voltage required for a transistor to boost electrical current by a factor of 10 at room temperature when switching between “off” and “on” states.

Quantum theory faces ‘cultural gaps’ as computational limits reshape entanglement understanding

Quantum researchers in the twenty-first century are part of an international network that requires a great deal of interaction and communication. Around one hundred publications on the topic are produced every day, often by authors who work in close collaboration with one another. New developments and discoveries are quickly integrated into the field, usually within a matter of just a few weeks. Researchers immediately proceed to build on these findings with innovative ideas. That is what the day-to-day life in the field of quantum theory looks like as it celebrates the one-hundredth anniversary of the initial development of quantum mechanics.

In honor of this milestone, UNESCO has declared 2025 the International Year of Quantum Science and Technology. One of the latest discoveries in this special year comes from an international research group led by quantum physicist Jens Eisert, professor at Freie Universität Berlin. The group’s surprising findings have made a significant contribution to scientists’ understanding of .

Their study, “Entanglement Theory with Limited Computational Resources,” was recently published in the journal Nature Physics. The article shows that, in practice, the established method used to measure correlations in quantum mechanics might not function exactly as was previously assumed.

[News] Chinese Scientists Developed a Novel Chip, Crossing a Century-Old Hurdle

According to the Institute for Artificial Intelligence at Peking University, a research team led by Researcher Sun Zhong and his collaborators has recently published a paper in the international journal Nature Electronics, reporting a major breakthrough in novel computing architectures.

The team successfully developed a high-precision and scalable analog matrix computing chip based on resistive random-access memory (RRAM). For the first time, the chip achieves analog computation accuracy rival to that of digital systems, improving the precision of traditional analog computing by an astonishing five orders of magnitude.

Performance evaluations show that when solving large-scale MIMO signal detection and other key scientific problems, the chip’s computational throughput and energy efficiency are hundreds to thousands of times higher than those of today’s top-tier digital processors (GPU).

Dual torque from electron spins drives magnetic domain wall displacement

A research team has taken a major step forward in the field of spintronics, a technology that uses not only the charge but also the spin of electrons to create faster, smarter, and more energy-efficient electronic devices. Their discovery could pave the way for the next generation of memory chips that combine high speed with low power consumption.

In spintronic memory, information is stored using tiny magnetic regions called . A magnetic domain with its magnetic moments pointing upward represents a “1,” while one pointing downward represents a “0.” Data can be read or written by shifting these domains with an .

The boundaries between them, known as domain walls, play a crucial role, as moving domains means moving these walls. Achieving fast and efficient domain wall motion is essential for developing advanced memories such as magnetic shift registers and three-terminal magnetic random access memories (MRAM).

Oxford Physicists Simulate Quantum “Light from Darkness” for the First Time

Scientists have created the first real-time 3D simulations of how lasers alter the quantum vacuum. Using cutting-edge computational modeling, scientists from the University of Oxford, in collaboration with the Instituto Superior Técnico at the University of Lisbon, have successfully produced the fi

Revolutionary Prosthetic Eye Chip Restores Sight in Medical First

A tiny chip implanted into the eyes of people suffering vision loss from irreversible age-related macular degeneration has restored central sight in a dazzling first.

It’s called the PRIMA system, tested across 17 European hospitals, and it restored central vision in 26 of 32 patients who used it for 12 months – many of whom could even read again. The result, developed by a large international team of doctors and scientists over many years, represents a massive breakthrough in treatments for vision loss.

“It’s the first time that any attempt at vision restoration has achieved such results in a large number of patients,” says ophthamologist José-Alain Sahel of the University of Pittsburgh School of Medicine, co-senior author on a paper describing the results.

Netherlands tightens export restrictions on microchip machines, mainly targeting ASML

The Dutch government is tightening its export restrictions on microchip-making machines, specifically deep ultraviolet (DUV) lithographic machines. A licensing requirement will apply to the export of older types of DUV machinery beginning on Saturday, a decision which primarily impacts Dutch business ASML. Foreign Trade Minister Reinett Klever cited national security concerns when announcing the measure on Friday.

According to ASML, the licensing requirement update is a technical change that mainly means that the company will apply for export licenses from the government of the Netherlands, not the United States, for two older types of DUV immersion lithography systems (1970i and 1980i). The Dutch government already implemented a licensing requirement for the newer generations of DUV machines (2000i and later) in September last year.

DUV lithography machines are the second-most advanced microchip-making machines, after extreme ultraviolet (EUV) lithography machines. Dutch company ASML is the world’s only manufacturer of EUV lithography machines and is also a global leader in the production, refurbishment, and repair of DUV lithography machines. DUV machines can still be used to make highly sophisticated microchips, and some of China’s leading tech companies, like Huawei, are actively pushing the limits of the older technology.

Investigating the Individual Performances of Coupled Superconducting Transmon Qubits

The strong requirement for high-performing quantum computing led to intensive research on novel quantum platforms in the last decades. The circuital nature of Josephson-based quantum superconducting systems powerfully supports massive circuital freedom, which allowed for the implementation of a wide range of qubit designs, and an easy interface with the quantum processing unit. However, this unavoidably introduces a coupling with the environment, and thus to extra decoherence sources. Moreover, at the time of writing, control and readout protocols mainly use analogue microwave electronics, which limit the otherwise reasonable scalability in superconducting quantum circuits.

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