Tiny polymer devices mimic neuron firing, pointing toward energy-efficient edge computing

Nanoscale mechanics could enable brain-inspired computing
This illustration shows the nano-mechanical devices the researchers developed. Inspired by neurons, they can perform computing tasks with high energy efficiency. Credit: Emily Theobald

MIT researchers have created a computing platform that could be used to develop intelligent and adaptive next-generation electronics that can perform multiple functions, like computing and memory, within one extremely compact, energy-efficient device.

Such a platform opens opportunities for low-power edge computing applications, interactive medical and environmental monitoring systems, and smart robots.

The researchers accomplished this by leveraging the unique mechanical response of soft polymers at the nanoscale. A mechanical response is how a structure changes when a force is applied to it.

T...

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‘Born-again’ star offers rare chance to watch stellar evolution in real time

'Born-again' star offers rare chance to watch stellar evolution in real time
The rapid brightening of Sakurai’s object (green circle) allows astronomers to study the final phases of the stellar evolution in only a few decades. The left and right panels show the brightening. The middle panel is an image obtained with the radio telescope ALMA, showing the material ejected after the star re-ignited. The material currently extends over a size similar to our entire solar system. Credit: Stefan Kimeswenger, University of Innsbruck; Peter van Hoof, Royal Observatory Belgium.

Astronomers have confirmed that one of the fastest-changing stars ever observed has entered a new stage of its evolution, offering a rare opportunity to watch a star’s life unfold on human timescales.

Using the European Southern Observatory’s Very Large Telescope (VLT) in Chile, researchers inc...

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Experimental cancer vaccine makes its own oxygen and gives T cells a boost

This cancer vaccine makes its own oxygen and gives T-cells a boost
This sponge-like cryogel cancer vaccine does double duty: training immune cells while generating oxygen to help them fight tumors. Credit: Matthew Modoono/Northeastern University

When it comes to priorities in life, oxygen tops the list. Humans can go weeks without food and days without water. Take away the ability to breathe, however, and the clock starts ticking within minutes as the brain begins shutting down. But the life-giving gas does even more heavy lifting than you might think.

The immune system, which battles cancer with the help of specialized fighters, such as T cells, relies on oxygen to mount its attack.

Now, Bouvé College of Health Sciences professor and director of the pharmaceutical and biomedical sciences graduate program Stephen Hatfield and his colleagues are ...

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A blueprint for keeping humans in control of AI

ai
Credit: Pixabay/CC0 Public Domain

William Overman began his Ph.D. program at Stanford Graduate School of Business at an auspicious moment: just two months before ChatGPT launched publicly in November 2022, exploding the widely held understanding of what machines are capable of.

Even as Overman began enlisting AI for his research, he grew wary of where the technology was headed. “This isn’t only about the apocalyptic potential of what could happen; I’m also thinking a lot about the future of human flourishing,” Overman says. He fears that misaligned AI could overstep its bounds—not necessarily maliciously—and inflict subtle yet real harms on people.

“To prevent that, we need to get this right,” Overman says.

“We must set up the proper interactions and training and incentive...

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