Search results for metasurface

Nanophysics Jun 30, 2025

Engineering nano-clouds that can change color, temperature and outwit heat sensors

How does a cloud stay cool under direct sunlight—or seem to vanish in infrared? In nature, phenomena like white cumulus clouds, gray storm systems, and even the hollow hairs of polar bears offer remarkable lessons in balancing ...

Quantum Physics Jun 26, 2025

Researcher discusses trapping single atoms and putting them to work in emerging quantum technologies

Blink and you might miss it, but if you keep your eye on the monitors in professor Sebastian Will's lab, you'll catch a series of single-second flashes that light up the screen. Each flash is an atom of strontium, a naturally ...

Optics & Photonics Jun 26, 2025

Scientists build first self-illuminating biosensor

Optical biosensors use light waves as a probe to detect molecules, and are essential for precise medical diagnostics, personalized medicine, and environmental monitoring.

Optics & Photonics Jun 16, 2025

New nano-based filter for infrared light promises cheap, robust spectrometers

A new filter for infrared light could see scanning and screening technology tumble in price and size. Built on nanotechnology, the new heat-tunable filter promises hand-held, robust technology to replace current desktop infrared ...

Optics & Photonics Jun 13, 2025

A high-resolution spectrometer that fits into smartphones

Color, as the way light's wavelength is perceived by the human eye, goes beyond a simple aesthetic element, containing important scientific information like a substance's composition or state.

Optics & Photonics Jun 2, 2025

Ultra-thin lenses halve incident wavelength to make infrared light visible

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.

Nanophysics May 29, 2025

Ultrathin resonators set new standard for efficient light manipulation

In the nanometer range (billionth of a meter), interactions occur between light and matter that do not happen on larger scales. As such, so-called nanophotonic materials have unique optical properties that open up a whole ...

Optics & Photonics May 28, 2025

High-resolution metalens doublet microscope enables compact biomedical imaging

Metalenses represent a revolutionary advancement in optical technology. Unlike conventional microscope objectives that rely on curved glass surfaces, metalenses employ nanoscale structures to manipulate light at the subwavelength ...

Nanophysics May 28, 2025

Single-layer waveguide display uses achromatic metagratings for more compact augmented reality eyewear

Augmented reality (AR), the technology that overlays digital content onto what users see around them in real-time, is now widely used in the retail, gaming and entertainment industries, as well as in some educational settings ...

Nanophysics May 21, 2025

Flat optical metasurfaces in conductive plastics achieve 10-fold performance boost

By carefully placing nanostructures on a flat surface, researchers at Linköping University, Sweden, have significantly improved the performance of so-called optical metasurfaces in conductive plastics. This is a major step ...

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