Results 91 to 100 of about 20,833 (309)

Revealing the Transmission Hologram's Refractive Index Profile Stored in a Photohydrogel: A Structural Characterization

Advanced Optical Materials, EarlyView.
A theoretical model is developed to visualize three‐dimensional refractive index profiles in transmission holographic gratings. In this work, it is applied to photopolymerizable hydrogels, enabling detailed analysis of the internal structure of recorded holograms and their evolution under different degradation conditions.
Belén Nieto‐Rodríguez, Manuel G. Ramírez, José Carlos García‐Vázquez, Tomás Lloret, Inmaculada Pascual   +4 more
wiley   +1 more source

Liquid crystal-integrated metasurfaces for an active photonic platform

Opto-Electronic Advances
Metasurfaces have opened the door to next-generation optical devices due to their ability to dramatically modulate electromagnetic waves at will using periodically arranged nanostructures.
Dohyun Kang, Hyeonsu Heo, Younghwan Yang, Junhwa Seong, Hongyoon Kim, Joohoon Kim, Junsuk Rho   +6 more
doaj   +1 more source

Metasurfaces: Physics and Applications [PDF]

, 2018
Metasurfaces, the two-dimensional analog of metamaterials, have attracted progressively increasing attention in recent years due to their planar configurations and, thus, ease of fabrication, while enabling an unprecedented control over optical fields ...
Sergey I. Bozhevolnyi (Ed.), Patrice Genevet (Ed.), Fei Ding (Ed.)   +2 more
core   +1 more source

Chip‐Integrated Metasurface‐GaAsSb Nanowire Array Photodetectors for Single‐Pixel Polarimetric Imaging

Advanced Optical Materials, EarlyView.
A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang, Ziyuan Li, Yitao Yang, Yang Yu, Lei Xu, Li Li, Songqin Zhang, Han Wang, Wenwu Pan, Chaohao Chen, Weiqi Jin, Wen Lei, Lorenzo Faraone, Chennupati Jagadish, Lan Fu   +14 more
wiley   +1 more source

Machine Learning Enables Inverse Design of Optically Driven Microscopic Metavehicles

Advanced Optical Materials, EarlyView.
Machine‐learning‐based inverse design is used optimize “metavehicles” — flat microparticles based on metagratings that generate a strong lateral optical force from normally incident light. The optimized design exhibits a force efficiency of ∼88% and a measured propulsion speed in water much higher than previously reported, demonstrating that inverse ...
Vasilii Mylnikov, Mahdi Shanei, Mikael Käll   +2 more
wiley   +1 more source

Low-loss metasurfaces based on discretized meta-atoms

Communications Physics
Metasurfaces are established tools for manipulating light and enhancing light-matter interactions. However, the loss of conventional meta-atoms usually limits the performance potential of metasurfaces.
Yisheng Gao
doaj   +1 more source

Broadband light structuring through all-dielectric metasurfaces for imaging applications

The achievement of a wide-ranging and versatile response from a single optical device holds significant relevance in microscopy and bio-medical imaging techniques. These imaging methods help us find the building blocks of a targeted object.
Mahmood, Nasir
core   +1 more source

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

High efficiency focusing vortex generation and multichannel multiplexing based on terahertz metasurfaces

Scientific Reports
Single-function metasurfaces can only perform one task and thus cannot satisfy the demands of many advanced applications. Employing multifunctional and multiplexing metasurfaces considerably increases the integration density of functional devices ...
Wenyu Li, Tianhua Meng, Lijuan Dong, Lixiang Liu, Jingyu Liu, Guozhong Zhao   +5 more
doaj   +1 more source