Tapping the Power of 100 Suns

Concentrated solar power will keep future armies on the march

12 min read
Illustration: Daniel Hertzberg
Illustration: Daniel Hertzberg

Napoleon’s dictum no longer applies: These days, an army marches not so much on its stomach as on its batteries. Without them, soldiers can’t see in the dark, work their radios, or determine their positions. But even the best storage batteries—accounting for one-fifth of the load in a typical infantryman’s 45-kilogram pack—can’t last the week or so that field soldiers require. The same problem is coming to afflict the rest of us, as we become ever more dependent on our smartphones and GPS navigation.

While we wait for better batteries we must find new ways to recharge the ones we have when we’re far from a wall socket. What we need is a really good, portable photovoltaic system, one that can take in a huge gulp of sunlight and convert most of it into electricity. Such an advance could also help drive down the cost of solar electricity in sunny climes around the world and prevent great quantities of carbon emissions.

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Engineers Are Working on a Solar Microgrid to Outlast Lunar Nights

Future lunar bases will need power for mining and astronaut survival

4 min read
A rendering of a lunar base. In the foreground are rows of solar panels and behind them are two astronauts standing in front of a glass dome with plants inside.
P. Carril/ESA

The next time humans land on the moon, they intend to stay awhile. For the Artemis program, NASA and its collaborators want to build a sustained presence on the moon, which includes setting up a base where astronauts can live and work.

One of the crucial elements for a functioning lunar base is a power supply. Sandia National Laboratories, a research and development lab that specializes in building microgrids for military bases, is teaming up with NASA to design one that will work on the moon.

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Trilobite-Inspired Camera Boasts Huge Depth of Field

New camera relies on “metalenses” that could be fabricated using a standard CMOS foundry

3 min read
Black and white image showing different white box shapes in rows

Scanning electron microscope image of the titanium oxide nanopillars that make up the metalens. The scale is 500 nanometers (nm).

NIST

Inspired by the eyes of extinct trilobites, researchers have created a miniature camera with a record-setting depth of field—the distance over which a camera can produce sharp images in a single photo. Their new study reveals that with the aid of artificial intelligence, their device can simultaneously image objects as near as 3 centimeters and as far away as 1.7 kilometers.

Five hundred million years ago, the oceans teemed with horseshoe-crab-like trilobites. Among the most successful of all early animals, these armored invertebrates lived on Earth for roughly 270 million years before going extinct.

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Why Battery Energy Storage Is Moving to Higher DC Voltages

Download this free whitepaper to learn how battery energy storage up to 1500 VDC can deliver power efficiencies and cost reductions

1 min read

The explosive growth of the battery energy storage industry has created a need for higher DC voltages in utility-scale applications.

Download this free whitepaper and learn how you can achieve a smooth transfer of power, efficiencies and cost reductions with battery energy storage system components up to1500 VDC.