Tag

Metasurface

All articles tagged with #metasurface

technology1 month ago•20 min saved

Polarization-tuned metasurface lens enables switchable 2D–3D displays

A full-color 2D–3D switchable light-field display powered by a polarization-dependent metasurface lenticular lens (MLL) switches between 2D and 3D modes by changing the polarization of incident light. The ultrathin device (1.2 mm) achieves a wide 100° field of view and a 25 cm² active area, can be mounted onto an OLED panel, and demonstrates active switching via applied voltage, indicating scalability for wide-area display applications in consumer electronics.

via Nature|

#2d-3d-display #lenticular-lens #light-field

technology10 months ago•4 min saved

Harvard's Ultra-Thin Chip and Quantum Breakthroughs Accelerate Global Military Tech Race

Harvard researchers have developed a novel ultra-thin metasurface that simplifies quantum operations by replacing multiple optical components, potentially revolutionizing quantum computing, sensing, and networking with more scalable, stable, and cost-effective devices.

via Rude Baguette|

#harvard #metasurface #photon-based-technology

science-and-technology2 years ago•1 min saved

"Light-Powered Nanoscale Control of Electrical Currents for Next-Gen Tech"

Researchers have developed an innovative class of optoelectronic metasurface that allows for precise control of electrical currents at the nanoscale using light. This breakthrough could lead to applications in terahertz science, information processing, and other fields, offering opportunities for ultrafast light-controlled charge flows.

via Nature.com|

#light-driven-currents #metasurface #nanoscale-control

technology2 years ago•3 min saved

"Revolutionary Optical Invention Mimics Human Eye's Image Processing Power"

Researchers at Penn State have developed a metasurface, an optical element that mimics the image processing capabilities of the human eye, allowing for instantaneous image transformation before digitalization by a camera. This innovation has the potential to significantly reduce the computing power and energy required for artificial intelligence systems to process images and identify objects, making it easier to recognize objects across different scales and orientations. The metasurface works using nanostructures to bend light and can be applied in various fields, including target tracking, surveillance, and satellite imaging.

via Phys.org|

#artificial-intelligence #image-processing #metasurface

physics3 years ago•2 min saved

Metasurface Generates Time-Varying Orbital Angular Momentum

Researchers from The Hong Kong University of Science and Technology and City University of Hong Kong have developed time-varying orbital angular momentum (OAM) beams using a space-time encoded digital metasurface. By exploiting the flexible programmability of the metasurface, they construct different modes of the time-varying OAM beams having a time-dependent phase profile in each time layer, allowing not only a time-varying topological charge but also a higher-order twist in the envelope wavefront structure of the OAM beam. The proposed time-varying OAM beams have application potential for dynamic particle trapping, time-division multiplexing, information encryption, and beyond.

via Phys.org|

#information-encryption #metasurface #oam

science-and-technology3 years ago•3 min saved

"Physicists Develop Photonic Time Crystal to Enhance Light"

Researchers have created photonic time crystals that operate at microwave frequencies, which can amplify electromagnetic waves. The two-dimensional photonic time crystals have potential applications in wireless communication, integrated circuits, and lasers. The periodic arrangement of photons in the crystal leads to constructive interference and amplification of light, which can boost the efficiency of wireless transmitters and receivers. Coating surfaces with 2D photonic time crystals could also help with signal decay, and the crystals could simplify laser designs by removing the need for bulk mirrors.

via Phys.org|

#electromagnetic-waves #lasers #metasurface