Search results for metasurface

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 ...

Nanophysics Jan 21, 2025

Novel perovskite growth method leads to ultrahigh-resolution micro-LED displays

Microscale light-emitting diodes (micro-LEDs) are emerging as a next-generation display technology for optical communications, augmented and virtual reality, and wearable devices. Metal-halide perovskites show great potential ...

Optics & Photonics Jan 17, 2025

Twisting light: Novel metasurface offers compact solution for circularly polarized light

Left and right circularly polarized light, where the electromagnetic waves spiral in a clockwise and counterclockwise manner as they travel, plays a crucial role in a wide range of applications, from enhancing medical imaging ...

Nanophysics Dec 20, 2024

Advancing light control: New opportunities for metasurfaces in optoelectronics

A global review of advancements in integrating metasurfaces—thin planar arrays of nanostructures—into optoelectronic devices highlights their potential to transform technologies such as light emitting diodes (LEDs), lasers, ...

Optics & Photonics Dec 20, 2024

Compact on-chip polarimeter measures light polarization with high accuracy

Reliably measuring the polarization state of light is crucial for various technological applications, ranging from optical communication to biomedical imaging. Yet conventional polarimeters are made of bulky components, which ...

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