Staff at the Osaka World Expo are wearing neck fans powered by next-generation perovskite solar cells that weigh less than a ...

But metalenses—a new class of ultra-thin lenses built from nanoscale structures—are now changing the rules. Metalenses use nanostructures, often smaller than the wavelength of light, to steer ...

Ultra-thin, it can transform infrared light into visible light by halving the wavelength of incident light. Skip to main content. Your source for the latest research news.

Ultra-thin lithium niobate metalenses with engineered nanostructures can halve the wavelength of incident light, converting infrared (800 nm) to visible (400 nm) while focusing it.

Physicists at ETH Zurich have developed a lens that can transform infrared light into visible light by halving the wavelength of incident light. The study is published in Advanced Materials.