Light-based chip can boost power efficiency of AI tasks up to 100-fold

New light-based chip boosts power efficiency of AI tasks 100 fold
A newly developed silicon photonic chip turns light-encoded data into instant convolution results. Credit: H. Yang (University of Florida)

A team at the University of Florida has developed a new kind of computer chip that uses light with electricity to perform one of the most power-intensive parts of artificial intelligence—image recognition and similar pattern-finding tasks. Using light dramatically cuts the power needed to perform these tasks, with efficiency 10 or even 100 times that of current chips performing the same calculations. Using this approach could help rein in the enormous demand for electricity that is straining power grids while enabling higher performance AI models and systems.

Artificial intelligence (AI) systems are increasingly central to technology, powering ...

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TRAPPIST-1e observations narrow down possibilities for atmosphere and surface water on elusive exoplanet

Transmission spectroscopy of the habitable zone planet TRAPPIST-1 e
Scientists call this event a transit, when valuable data can be gathered as the exoplanet passes between the star and the telescope and starlight illuminates the atmosphere, if one is present. NASA’s James Webb Space Telescope has made initial observations of planets b, c, d, and e during their transits, with additional observations of planet e underway. While the star’s frequent flares make it difficult to detect an atmosphere, each transit builds up more and more information for scientists to get a more complete picture of these distant worlds. Credit: NASA, ESA, CSA, J. Olmsted (STScI)

University of Bristol astrophysicists are helping shed new light on an Earth-sized exoplanet 40 light years away where liquid water in the form of a global ocean or icy expanse might exist on its surf...

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Human brains explore more to avoid losses than to seek gains

Human brains explore more to avoid losses than to seek gains
Paradigm and learning behavior in loss versus gain conditions. Credit: Nature (2025). DOI: 10.1038/s41586-025-09466-1

Researchers at the Weizmann Institute of Science traced a neural mechanism that explains why humans explore more aggressively when avoiding losses than when pursuing gains. Their work reveals how neuronal firing and noise in the amygdala shape exploratory decision-making.

Human survival has its origins in a delicate balance of exploration versus exploitation. There is safety in exploiting what is known, the local hunting grounds, the favorite foraging location, the go-to deli with the familiar menu...

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Solar breakthrough — hotter panels mean better storage

Solar breakthrough—hotter panels mean better storage
Schematic of PEC cell setup composed of a c-Si device based on a pn+-junction and coated with a 10 nm Pt layer as a photocathode, a Hg/HgSO4 electrode as a reference electrode, and a carbon rod as the counter electrode. Credit: The Journal of Chemical Physics (2025). DOI: 10.1063/5.0283536

Scientists have uncovered a surprising advantage in next-generation solar technology—the hotter it gets, the better it can store energy. Traditionally, heat has been seen as the enemy of solar power. Standard solar panels lose efficiency as temperatures rise.

But a new study, published in The Journal of Chemical Physics, shows that in special “solar-plus-storage” devices, heat can actually boost performance by speeding up the internal chemical reactions that store energy.

The team studied ...

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