Search results for metasurface

Nanophysics Apr 1, 2025

Doubling down on metasurfaces: Bilayer device can control many forms of polarized light

Almost a decade ago, Harvard engineers unveiled the world's first visible-spectrum metasurfaces—ultra-thin, flat devices patterned with nanoscale structures that could precisely control the behavior of light. A powerful ...

Optics & Photonics Apr 1, 2025

Revolutionizing 3D vision: How miniaturized snapshot polarization imaging is transforming depth sensing

Capturing precise 3D details with a single camera has long been a challenge. Traditional methods often require complex dual-camera setups or specialized lighting conditions that are impractical for real-world applications. ...

Optics & Photonics Mar 28, 2025

Efficient light control: Meta-optics replace conventional lenses

Conventional curved lenses, which direct light by refraction in glass or plastic, are often bulky and heavy, offering only limited control of light waves. Metasurfaces, in contrast, are flat and consist of an array of tiny ...

Optics & Photonics Mar 27, 2025

Liquid-crystal platform overcomes optical losses in photonic circuits

Photonic circuits, which manipulate light to perform various computational tasks, have become essential tools for a range of advanced technologies—from quantum simulations to artificial intelligence. These circuits offer ...

Nanophysics Mar 25, 2025

Magnetic 'microflowers' enhance local magnetic fields

A flower-shaped structure only a few micrometers in size made of a nickel-iron alloy can concentrate and locally enhance magnetic fields. The size of the effect can be controlled by varying the geometry and number of "petals."

Optics & Photonics Mar 12, 2025

Quantum holograms: Metasurfaces entangle light and information in new study

Quantum entanglement is a fundamental phenomenon in nature and one of the most intriguing aspects of quantum mechanics. It describes a correlation between two particles, such that measuring the properties of one instantly ...

Optics & Photonics Mar 10, 2025

Metasurface technology offers a compact way to generate multiphoton entanglement

Quantum information processing is a field that relies on the entanglement of multiple photons to process vast amounts of information. However, creating multiphoton entanglement is a challenging task. Traditional methods either ...

Nanophysics Feb 20, 2025

Collection of tiny antennas can amplify and control light polarized in any direction

Antennas receive and transmit electromagnetic waves, delivering information to our radios, televisions, cellphones and more. Researchers in the McKelvey School of Engineering at Washington University in St. Louis imagines ...

Optics & Photonics Feb 5, 2025

Compact camera can identify objects at the speed of light

Collaboration can be a beautiful thing, especially when people work together to create something new. Take, for example, a longstanding collaboration between Arka Majumdar, a University of Washington (UW) professor of electrical ...

Optics & Photonics Feb 4, 2025

Multidimensional sampling theory reduces noise to push flat optics boundaries

A research team at POSTECH has developed a novel multidimensional sampling theory to overcome the limitations of flat optics. Their study not only identifies the constraints of conventional sampling theories in metasurface ...

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