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Category: computing – Page 190

2D layer of phosphorus pentamers shows semiconductor properties on silver surface

Phosphorus is an exciting element: It is essential for the survival of organisms and promises numerous electronic applications. With this in mind, researchers at the University of Basel have synthesized two-dimensional layers containing rings of five phosphorus atoms (phosphorus pentamers (cyclo-P5)) on a silver surface.

For the first time, they have been able to investigate their electronic properties using combined atomic force and scanning tunneling spectroscopy. They found that the atomic phosphorus pentamer layer retains its semiconductor properties and forms a special electronic interface where the layer joins the silver surface (p-type semiconductor-metal Schottky junction).

This shows that phosphorus pentamers on the silver surface fulfill a basic requirement for applications in field-effect transistors, diodes or solar cells, as recently reported by the research team in the scientific journal Nature Communications (“Probing charge redistribution at the interface of self-assembled cyclo-P5 pentamers on Ag(111)”).

New 2D quantum sensing chip detects temperature and magnetic fields

Researchers at TMOS, the ARC Centre of Excellence for Transformative Meta-Optical Systems, and their collaborators at RMIT University have developed a new 2D quantum sensing chip using hexagonal boron nitride (hBN) that can simultaneously detect temperature anomalies and magnetic field in any direction in a new, groundbreaking thin-film format.

In a paper released in Nature Communications (“Multi-species optically addressable spin defects in a van der Waals material”), they detail a sensor that is significantly thinner than current quantum technology for magnetometry, paving the way for cheaper, more versatile quantum sensors.

Experimental set-up of hBN quantum sennsor. (Image: RMIT University)

Missing Link Discovered: New Research Paves the Way for Charging Phones in Under a Minute

CU Boulder scientists have found how ions move in tiny pores, potentially improving energy storage in devices like supercapacitors. Their research updates Kirchhoff’s law, with significant implications for energy storage in vehicles and power grids.

Imagine if your dead laptop or phone could be charged in a minute, or if an electric car could be fully powered in just 10 minutes. While this isn’t possible yet, new research by a team of scientists at CU Boulder could potentially make these advances a reality.

Published in the Proceedings of the National Academy of Sciences, researchers in Ankur Gupta’s lab discovered how tiny charged particles, called ions, move within a complex network of minuscule pores. The breakthrough could lead to the development of more efficient energy storage devices, such as supercapacitors, said Gupta, an assistant professor of chemical and biological engineering.

Quantum Computing’s Holy Grail: Realizing Topologically Protected Qubits

A team of physicists has successfully created superconducting properties in materials known for conducting electricity only at their edges, marking a potential leap forward in quantum computing technology.

This achievement, which has eluded researchers for over a decade, was made possible through meticulous control of the experimental conditions.

Quantum Breakthroughs

Physicists Pinpoint the Quantum Origin of the Greenhouse Effect

“The moment when we wrote down the terms of this equation and saw that it all clicked together, it felt pretty incredible,” Wordsworth said. “It’s a result that finally shows us how directly the quantum mechanics links to the bigger picture.”

In some ways, he said, the calculation helps us understand climate change better than any computer model. “It just seems to be a fundamentally important thing to be able to say in a field that we can show from basic principles where everything comes from.”

Japan on edge of EUV lithography chip-making revolution

The Okinawa Institute of Science and Technology (OIST) has designed a new type of extreme ultraviolet (EUV) lithography equipment that could significantly reduce the cost to produce 7nm and smaller semiconductors, and thus revolutionize the chip manufacturing supply chain.

According to reports, the EUV equipment’s optical system is greatly simplified while power consumption is reduced by a factor of ten, raising the prospect of much cheaper advanced chip-making machines.

If so, it could mark the end of ASML’s monopoly on EUV lithography, which would have serious implications for semiconductor manufacturers, investors and governments.

Riverlane Locks Up $75M As Quantum Funding Continues Strong Year

Startup Riverlane helped continue what has been a strong year for venture funding in the quantum computing industry.

The U.K.-based firm — which specializes in quantum error correction technology — raised a $75 million Series C led by Planet First Partners. The round also includes participation from ETF Partners, EDBI, Cambridge Innovation Capital, Amadeus Capital Partners, the National Security Strategic Investment Fund and Altair

The company’s tech helps quantum computers perform without succumbing to eventual errors. Such computers typically can only perform a few hundred quantum operations before failure.

New X-ray world record: Looking inside a microchip with 4 nanometer precision

In a collaboration with EPFL Lausanne, ETH Zurich and the University of Southern California researchers at the Paul Scherrer Institute PSI have used X-rays to look inside a microchip with higher precision than ever before. The image resolution of 4 nanometers marks a new world record. The high-resolution three-dimensional images of the type they produced will enable advances in both information technology and the life sciences.

The researchers are reporting their findings in the current issue of the journal Nature (“High-performance 4 nm resolution X-ray tomography using burst ptychography”).

View inside a state-of-the-art computer chip. Their newly developed ptychographic technique allowed the researchers to map the three-dimensional structure of this engineering marvel. The picture shows the different layers that make up the microchip. The coarser structures can be seen at the top. The microchip becomes increasingly complex as you move down through the layers – making the connections there visible requires a resolution of just a few nanometers. (Image: Tomas Aidukas, Paul Scherrer Institute)

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