Related topics: power consumption

Scientists invent topological-cavity surface-emitting laser

Semiconductor lasers are the most widely used lasers due to their compact size, high efficiency, low cost and wide spectra. But they suffer low output power and low beam quality—two specifications difficult to improve simultaneously. ...

Solar beats nuclear at many potential settlement sites on Mars

The high efficiency, light weight and flexibility of the latest solar cell technology means photovoltaics could provide all the power needed for an extended mission to Mars, or even a permanent settlement there, according ...

What is decarbonization, and how do we make it happen?

To keep the planet from warming more than 1.5°C above pre-industrial levels, most countries, including the U.S., have goals to reach net zero by 2050. Net zero means that all greenhouse gas emissions produced are counterbalanced ...

China backpedals on climate promises as economy slows

When China's President Xi Jinping issued his traditional Lunar New Year wishes from the country's coal heartland in January, the subtext was clear: Beijing is not ready to kick its coal addiction, despite promises to slash ...

Making equal-size colloidal quantum dots

Quantum dots (QDs) are semiconductor particles only a few nanometers across that, thanks to their small size, exhibit peculiar optical and electronic properties due to quantum mechanics. With existing and foreseen applications ...

Carbon dots from human hair boost solar cells

QUT researchers have used carbon dots, created from human hair waste sourced from a Brisbane barbershop, to create a kind of "armor" to improve the performance of cutting-edge solar technology.

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