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Video: Glitter-sized ‘metalenses’ may soon power your smartphone camera

Glass lenses, used in everything from smartphone cameras to microscopes, are bulky, heavy, and expensive. Now, a team of U.S. researchers has created high-power lenses from thin, flat arrays of nanosized towers of titanium dioxide that are thinner than a sheet of paper. The novel lenses are made from so-called metamaterials, engineered to control the way in which light waves interact (above). In this case, they are able to focus light across the visible spectrum. The setup allows them to magnify images up to 170 times with high resolution, as good as conventional state-of-the-art optics, the researchers report today in. The new lenses also have the potential to be fabricated—at much lower cost—with standard computer chip–making techniques. As a result, devices such as phones, tablets, and microscopes may soon be built with smaller, and cheaper, metalenses.

Watch Samsung unveil the Galaxy Fold

Samsung’s first foldable phone costs $1,980 and goes on sale April 26. Here is the announcement at the company’s event in San Francisco.

Samsung’s foldable phone is here!

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How to use Twitter to further your research career

Taking regular breaks to refresh the mind is important during tough working days. Although surfing the web and swiping your phone to check updates on social media might be frowned upon, it could be more productive than you think.

The popularity of social media has exploded since Twitter launched just over a decade ago, and the platform has distinguished itself as the place to disseminate tightly packed information with immediacy. Academics have jumped on the bandwagon for a range of practical purposes.


The social-media platform is often a tool for procrastination, says Jet-Sing M. Lee. But what else can it be? The social-media platform is often a tool for procrastination, says Jet-Sing M. Lee. But what else can it be?