Category Technology/Electronics

New light-based switch could cut chip energy use and speed future AI photonics

2D nanocavity exciton polaritons. (a) Schematic of the coupled TMD-PhC nanocavity. (b) Schematic of the gate-tunable TMD stack. (c) Scanning electron microscope image of the suspended Si3N4 nanobeam cavity, with the inset showing the simulated cavity mode profile. The dark area is suspended from the SiO2 substrate. Scale bar, 500 nm. Credit: Physical Review Letters (2026). DOI: 10.1103/gc15-qsvf

2D nanocavity exciton polaritons. (a) Schematic of the coupled TMD-PhC nanocavity. (b) Schematic of the gate-tunable TMD stack. (c) Scanning electron microscope image of the suspended Si3N4 nanobeam cavity, with the inset showing the simulated cavity mode profile. The dark area is suspended from the SiO2 substrate. Scale bar, 500 nm. Credit: Physical Review Letters (2026). DOI: 10...

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New semiconductor building blocks make power converters smaller, more affordable

New semiconductor building blocks make power converters smaller, more affordable
ORNL researcher Rahul Biswash tests a converter built in the Grid Research Innovation and Development Center, or GRID-C, to measure the operating efficiency of incorporating a gallium nitride semiconductor. Credit: Alonda Hines/ORNL, U.S. Dept. of Energy

Researchers at the Department of Energy’s Oak Ridge National Laboratory incorporated gallium nitride semiconductors to create a high-efficiency power converter that is more compact, affordable, and efficient.

A power converter is a type of device that manages semiconductor switching and transforms current or voltage, so electricity flows smoothly and safely among equipment, power sources, and users.

Silicon semiconductors are the fundamental building blocks of conventional converters...

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AI system automates scientific software design, outperforming human-written code in key benchmarks

A research team at Google co-led by Michael Brenner, Catalyst Professor of Applied Mathematics and Physics at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and Google research scientist, has produced a new artificial intelligence system that can automatically write scientific software programs that surpass the performance of human-written programs. The paper is published in the journal Nature.

How the ERA system came together
The system is called Empirical Research Assistance (ERA), and the project was co-led by Brenner and Shibl Mourad from Google DeepMind. Harvard Ph.D. students Qian-Ze Zhu, Ryan Krueger, and Sarah Martinson contributed as Google student researchers while working in Brenner’s group...

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Microcombs unlock 112Gbps wireless link at 560GHz for 6G

Photonic wireless transmission reaches 112 Gbps at 560 GHz using soliton microcombs
Conceptual illustration of microcomb-driven terahertz wireless communication. Optical frequency combs generated in a microresonator are used to produce low-noise terahertz signals via photomixing, enabling high-speed wireless transmission at 112 Gbps in the 560 GHz band for future 6G systems. Credit: Tokushima University

Researchers at Tokushima University have demonstrated single-channel wireless transmission at 112 Gbps in the 560 GHz band using soliton microcombs, marking a significant step toward next-generation 6G communications.

Conventional electronic technologies face fundamental limitations in generating stable high-frequency signals beyond 350 GHz, including reduced output power and increased phase noise...

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