#metasurface — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #metasurface, aggregated by home.social.
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A group of Chinese researchers has developed a unique technology that enables complex mathematical calculations to be performed directly on radio waves as they interact with a specially programmed surface.
They created a reprogrammable metasurface—an ultrathin structure coated with microscopic elements capable of dynamically changing the direction, phase, and amplitude of waves.
Using a digital time-domain encoding concept, the metasurface becomes a true "electromagnetic spatial computer," processing information as the waves propagate.
During their experiments, the scientists configured the system to perform two basic signal processing operations—Fourier transform and convolution.
https://www.nature.com/articles/s41467-026-76229-5
#technology #science_news #science #metasurface -
#Italy: #Today in #Italy: A roundup of the late https://kensbookinfo.blogspot.com/p/etc.html#Italy
#Science And #Research: #Artificial Intelligence for Optical #Metasurface De https://kensbookinfo.blogspot.com/p/24-7-pr.html#238
#Bristol #News: Hartcliffe Way crash leaves Harley-Davidson rider https://kensbookinfo.blogspot.com/p/cities.html#22a
#Agriland: Beef kill: 2025 supply now down by over 180,000 he https://kensbookinfo.blogspot.com/p/ireland.html#Agriland
#Vancouver #News: Ballfield renaming for the original owner https://kensbookinfo.blogspot.com/p/cities.html#114a
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https://phys.org/news/2025-07-asymmetric-metasurface-precise-photon-entanglement.html
created by a #metasurface made of indium gallium phosphide (InGaP), which has a nonlinear response that can split a classical photon into two #quantumphotons. By tuning the wavelength of the initial photon, the two new photons can be generated as fully entangled through their polarization, not entangled at all, or any value in between, with picosecond control.
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🌟 New selected research highlight 🌟
Tunable highly reflective metasurfaces – International team led by @unihannover researchers demonstrate wavelength-selective metamirrors based on sapphire and silicon nanoparticles
Metasurfaces are sheet materials with artificial structures smaller than the electromagnetic wavelength with which they interact. A new study led by researchers at the Institute for Gravitational Physics at @unihannover, Germany, presents the first experimental validation of the feasibility of realizing a reflective metasurface at selected wavelengths. The metasurface presented in this study is based on a single-layer nanoparticle array consisting of silicon cylinders on a sapphire substrate. The fabricated structures have a reflectivity of about 95% (at 1064 nm or 1550 nm), which can be improved by further optimization of the fabrication and characterization processes. This technology has the potential to be used in future gravitational-wave detectors. There, single-layer reflective surfaces mitigate coating thermal noise, an important source of instrumental disturbance.
ℹ️ https://www.aei.mpg.de/1202212/tunable-highly-reflective-metasurfaces
📄 https://onlinelibrary.wiley.com/doi/10.1002/adpr.202400116 (Open Access)#metasurface #photonics #metamirrors #GravitationalWaveDetectors #research
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🌟 Neues Forschungshighlight 🌟
Tunable highly reflective metasurfaces – International team led by @unihannover researchers demonstrate wavelength-selective metamirrors based on sapphire and silicon nanoparticles
Metasurfaces are sheet materials with artificial structures smaller than the electromagnetic wavelength with which they interact. A new study led by researchers at the Institute for Gravitational Physics at @unihannover, Germany, presents the first experimental validation of the feasibility of realizing a reflective metasurface at selected wavelengths. The metasurface presented in this study is based on a single-layer nanoparticle array consisting of silicon cylinders on a sapphire substrate. The fabricated structures have a reflectivity of about 95% (at 1064 nm or 1550 nm), which can be improved by further optimization of the fabrication and characterization processes. This technology has the potential to be used in future gravitational-wave detectors. There, single-layer reflective surfaces mitigate coating thermal noise, an important source of instrumental disturbance.
ℹ️ https://www.aei.mpg.de/1202729/tunable-highly-reflective-metasurfaces (englisch)
📄 https://onlinelibrary.wiley.com/doi/10.1002/adpr.202400116 (Open Access)#metasurface #photonics #metamirrors #GravitationalWaveDetectors #research
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Augmented reality slims down with #AI and #holograms https://spectrum.ieee.org/augmented-reality-glasses-metasurface "New #AR eyeglasses provide trim, wearable displays that don't cause headaches"; #metasurface #glasses
Full-colour 3D holographic augmented-reality displays with metasurface waveguides https://www.nature.com/articles/s41586-024-07386-0
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New selected research highlight: Silicon nanospheres for improved gravitational-wave detection – Important first steps towards a novel mirror coating for precision metrology applications
➡️ https://www.aei.mpg.de/1009039/silicon-nanospheres-for-improved-gravitational-wave-detection
📄 https://www.sciencedirect.com/science/article/pii/S0925346723001908
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New selected research highlight: Silicon nanospheres for improved gravitational-wave detection – Important first steps towards a novel mirror coating for precision metrology applications
➡️ https://www.aei.mpg.de/1009039/silicon-nanospheres-for-improved-gravitational-wave-detection
📄 https://www.sciencedirect.com/science/article/pii/S0925346723001908
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#Metamaterials use 3d structure to give materials special and exotic properties that do not exist in the constituent materials.
Of all their important applications, the creation of artificial tongues is a particularly eye-catching breakthrough.
📽️ https://www.youtube.com/watch?v=ELhGIymUQnw
#metasurface #sensors
