Engineering

Black silicon UV responses exceed 130% efficiency

"For the first time ever, we have direct experimental evidence that an external quantum efficiency above 100% is possible in a single photodiode without any external antireflection," says Hele Savin, associate professor of ...

Computer Sciences

A neural network that operates at the speed of light

A team of researchers at the University of California has developed a novel kind of neural network—one that uses light instead of electricity to arrive at results. In their paper published in the journal Science, the group ...

Electronics & Semiconductors

Thin and ultra-fast photodetector sees the full spectrum

Researchers have developed the world's first photodetector that can see all shades of light, in a prototype device that radically shrinks one of the most fundamental elements of modern technology.

Telecom

Using optical beaming to power a portable 5G base station

Telecommunications company Ericsson has teamed up with a company called PowerLight Technologies to send power through the air to run a 5G base station. Both companies have posted the details on their respective websites.

Energy & Green Tech

Shedding new light on the charging of lithium-ion batteries

Researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory have reported a new mechanism to speed up the charging of lithium-ion batteries for electric vehicles. Simply exposing the cathode to a beam ...

Energy & Green Tech

Oxygen breathes new life into solar cell research

Scientists in Australia and the United States have been able to 'upconvert' low energy light into high energy light, which can be captured by solar cells, in a new way, with oxygen the surprise secret ingredient. The results ...

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