Results 21 to 30 of about 24,953 (116)

Tunable bound states in the continuum in active metasurfaces of graphene disk dimers

Nanophotonics, 2023
Bound states in the continuum (BICs) in metasurfaces have lately attracted a great deal of attention stemming from their inherent (formally) divergent Q factors, which lead to an enhancement of light–matter interaction in two-dimensional geometries ...
Pura Jose Luis, Deop-Ruano Juan R., Abujetas Diego R., Giannini Vincenzo, Manjavacas Alejandro, Sánchez-Gil José A.   +5 more
doaj   +1 more source

Double-Strip Array-Based Metasurfaces with BICs for Terahertz Thin Membrane Detection

Micromachines, 2023
A double-strip array-based metasurface that supports the sharp quasi-bound states in the continuum (quasi-BICs) is demonstrated in terahertz regions.
Yanchun Shen, Jinlan Wang, Hongyu Sheng, Xiaoming Li, Jing Yang, Hongmei Liu, Dejun Liu   +6 more
doaj   +1 more source

Asymmetric tetramer metasurface sensor governed by quasi-bound states in the continuum

Nanophotonics, 2023
Asymmetric metasurfaces supporting quasi-bound states in the continuum (BICs) with high Q-factors and strong light–matter interaction properties are attractive platforms for label-free biosensing applications.
Zhou Yi, Luo Man, Zhao Xuyang, Li Yuxiang, Wang Qi, Liu Zhiran, Guo Junhong, Guo Zhihe, Liu Junjie, Wu Xiang   +9 more
doaj   +1 more source

Simulation Analysis of Microwave Metasurface Sensing Based on Bound States in the Continuum

Photonics
High-sensitivity microwave sensing plays a vital role in material characterization and nondestructive testing, with its performance being largely determined by the quality factor (Q factor) of the sensing structure.
Fanghao Li, Zhibao Huang, Tingting Lang
doaj   +1 more source

Active quasi-BIC optical vortex generators for ultrafast switching

New Journal of Physics, 2022
The Pancharatnam–Berry phase induced by the winding topology of polarization around a vortex singularity at bound states in the continuum (BIC) provides a unique approach to optical vortex (OV) generation.
Yuhao Wu, Lei Kang, Douglas H Werner
doaj   +1 more source

Delocalized Electric Field Enhancement through Near-Infrared Quasi-BIC Modes in a Hollow Cuboid Metasurface

Nanomaterials, 2023
The two main problems of dielectric metasurfaces for sensing and spectroscopy based on electromagnetic field enhancement are that resonances are mainly localized inside the resonator volume and that experimental Q-factors are very limited.
José Francisco Algorri, Victor Dmitriev, José Miguel López-Higuera, Dimitrios C. Zografopoulos   +3 more
doaj   +1 more source

Theoretical Enhancement of the Goos–Hänchen Shift with a Metasurface Based on Bound States in the Continuum

Micromachines, 2023
The enhancement of the Goos–Hänchen (GH) shift has become a research hotspot due to its promoted application of the GH effect in various fields. However, currently, the maximum GH shift is located at the reflectance dip, making it difficult to detect GH ...
Xiaowei Jiang, Bin Fang, Chunlian Zhan
doaj   +1 more source

Bound states in the continuum in periodic structures with structural disorder

Nanophotonics, 2021
We study the effect of structural disorder on the transition from the bound states in the continuum (BICs) to quasi-BICs by the example of the periodic photonic structure composed of two layers of parallel dielectric rods.
Maslova Ekaterina E., Rybin Mikhail V., Bogdanov Andrey A., Sadrieva Zarina F.   +3 more
doaj   +1 more source

Active angular tuning and switching of Brewster quasi bound states in the continuum in magneto-optic metasurfaces

Nanophotonics, 2021
Bound states in the continuum (BICs) emerge throughout physics as leaky/resonant modes that remain, however, highly localized. They have attracted much attention in photonics, and especially in metasurfaces.
Abujetas Diego R., de Sousa Nuno, García-Martín Antonio, Llorens José M., Sánchez-Gil José A.   +4 more
doaj   +1 more source

Nonradiating photonics with resonant dielectric nanostructures

Nanophotonics, 2019
Nonradiating sources of energy have traditionally been studied in quantum mechanics and astrophysics but have received very little attention in the photonics community. This situation has changed recently due to a number of pioneering theoretical studies
Koshelev Kirill, Favraud Gael, Bogdanov Andrey, Kivshar Yuri, Fratalocchi Andrea   +4 more
doaj   +1 more source