Results 111 to 120 of about 9,186 (292)

Hyperbolic Shear Metasurfaces

Physical Review Letters
Polar dielectrics with low crystal symmetry and sharp phonon resonances can support hyperbolic shear polaritons - highly confined surface modes with frequency-dependent optical axes and asymmetric dissipation features. So far, these modes have been observed only in bulk natural materials at mid-infrared frequencies, with properties limited by available
Enrico M. Renzi, Emanuele Galiffi, Xiang Ni, Andrea Alù   +3 more
openaire   +3 more sources

Bridging Optical and Mechanical Metamaterial/Metasurface Realms Toward Integrated Meta‐Systems

Advanced Optical Materials, EarlyView.
This perspective describes the rise of metamaterials in the field of materials science, specifically with optical and mechanical functionality. Fundamentals of both optical and mechanical metamaterials are discussed with a review of state‐of‐the‐art metamaterial science.
Justin Brackenridge, Jaejun Lee, Vladimir V. Tsukruk   +2 more
wiley   +1 more source

High-Q Quasibound States in the Continuum for Nonlinear Metasurfaces.

Physical Review Letters, 2019
Sharp electromagnetic resonances play an essential role in physics in general and optics in particular. The last decades have witnessed the successful developments of high-quality (Q) resonances in microcavities operating below the light line, which ...
Zhuojun Liu, Yi Xu, Ye Lin, J. Xiang, Tianhua Feng, Qi-Tao Cao, Juntao Li, S. Lan, Jin Liu   +8 more
semanticscholar   +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

Directional Janus Metasurface

Advanced Materials, 2019
AbstractJanus monolayers, a class of two‐faced 2D materials, have received significant attention in electronics, due to their unusual conduction properties stemming from their inherent out‐of‐plane asymmetry. Their photonic counterparts recently allowed for the control of hydrogenation/dehydrogenation processes, yielding drastically different responses
Ke Chen, Guowen Ding, Guangwei Hu, Zhongwei Jin, Junming Zhao, Yijun Feng, Tian Jiang, Andrea Alù, Cheng‐Wei Qiu   +8 more
openaire   +3 more sources

Observation of the Differential Goos‐Hänchen Shifts in Wavelength Domain Using a Helical Fiber Grating

Advanced Optical Materials, EarlyView.
Goos‐Hänchen shift (GHS) is a phenomenon in which an optical beam experiences a longitudinal displacement upon total internal reflection. In this work, we experimentally demonstrate an enhanced GHS in the wavelength domain using a helical fiber grating (HFG).
Zhang Meng, Yuto Kotani, Naoto Murata, Pawel Pogorzelski, Reza Abdi‐Ghaleh, Peng Wang, Hua Zhao, Hongpu Li   +7 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

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

Angle-multiplexed all-dielectric metasurfaces for broadband molecular fingerprint retrieval

Science Advances, 2019
Angle-multiplexed dielectric metasurfaces enable sensitive molecular fingerprint detection without the need for spectrometry. Infrared spectroscopy resolves the structure of molecules by detecting their characteristic vibrational fingerprints ...
A. Leitis, Andreas Tittl, Mingkai Liu, Bang Hyun Lee, M. Gu, Y. Kivshar, H. Altug   +6 more
semanticscholar   +1 more source

Metasurface-enhanced transparency

Journal of the Optical Society of America B, 2017
We consider the problem of light transmission from a high refractive index medium into a low index environment. While total internal reflection severely limits such transmission in systems with smooth interfaces, diffractive metasurfaces may help out-couple light that enters an interface at blazing angles.
Christopher M. Roberts, Timothy A. Cook, Viktor A. Podolskiy   +2 more
openaire   +2 more sources