Chirality metasurface

Author: xefm

August undefined, 2024

WebMar 23, 2024 · Switching from structural to superstructural chirality, this work reports high CD of 6350 mdeg and large gCD of 0.49 in a perovskite chiral metasurface obtained by nanostructure engineering. WebJan 29, 2024 · In particular, the chiral metasurface supports two chiral quasi-BIC resonances, which exhibit distinguished different properties. For example, the Q-factor of “mode 1” (Q ≈ 938.2) is more than an order of magnitude higher than that …

Asymmetrical Chirality in 3D Bended Metasurface

WebApr 8, 2024 · Here, we propose a twisted Moiré metasurface which can support three chiral bands with near-unity circular dichroism. The Moiré metasurface can remove the … WebJun 18, 2024 · Interestingly, an adapted out-of-plane chiral metasurface enables three key functionalities of the hyperbolic metamaterial sensor. Computational effort reveals that … danita potter phd

Perovskite metasurfaces with large superstructural chirality

WebDec 8, 2024 · Without using intrinsic chiral metamaterials with complex structures, here we use achiral metasurfaces to realize giant extrinsic chirality empowered by quasi-bound states in the continuum (quasi-BICs). The giant extrinsic chirality in the proposed achiral metasurface is mainly attributed to the breaking of the mirror symmetry of the whole … WebDec 11, 2024 · Optical chirality is intrinsically weak, and hard to tune in traditional bottom-up chiral perovskites. Here we realized all-dielectric halide perovskite chiral metasurfaces with a giant circular dichroism of 70% via high-throughput screening. Combining the giant optical chirality, unique light emission property and simple low-temperature ... WebJun 29, 2024 · Download PDF Abstract: We demonstrate that rotationally symmetric chiral metasurfaces can support arbitrarily sharp resonances with the maximum optical … danita lindroos

Perovskite chiral metasurface with giant optical chirality

Observation of Giant Extrinsic Chirality Empowered by Quasi …

WebApr 7, 2024 · This highlights the role of the chiral metasurface with α = 0.1 in producing CPE. And, if one wants to reverse the emission handedness, it can be simply reached by the mirror image of the above chiral metasurface with α = 0.1 along the x-axis, which has the opposite handedness as indicated in Section S5 of the Supporting Information. 3 … WebAug 3, 2024 · Dynamic control of photonic spin state and chirality plays a vital role in various applications, such as polarization control, polarization-sensitive imaging, and biosensing. Here, we present a scheme for the flexible and dynamic manipulation of terahertz spin state conversion and optical chirality by combining two achiral structures: … danita blow realtorWebDec 1, 2024 · The tunable chiral metasurface discussed here consists of a dielectric layer sandwiched between two metallic spiral structures, as shown in Fig. 6.7. When the dual-spiral meta-molecules are planar, the metasurface is an achiral structure since the mirror image can be superimposable on its original. danita ionescu amityville

"WebOptical metasurfaces with high-quality-factor resonances and selective chirality simultaneously are desired for nanophotonics. Here, an all-dielectric planar chiral … " - Chirality metasurface

Chirality metasurface

Sensors Free Full-Text Chiroptical Metasurfaces: Principles

WebMar 29, 2024 · Dielectric meta-surfaces have emerged as an effective way for fabricating chiral optical devices, and the chiral meta-surfaces are usually constituted by periodic chiral meta-atom structures. Here, we report a chiral meta-surface consisting of nonchiral silicon nitride rectangular nanorods. The chiral hotspots are generated between the … WebApr 13, 2024 · Metamaterial absorbers show great promise for applications in optical manipulation, photodetection, solar energy harvesting, and photocatalysis. In this work, we present a twisted stacked metamaterial design that serves as a plasmonic perfect absorber with polarization selectivity. Leveraging effective energy localization, the metamaterial …

Did you know?

WebDec 4, 2024 · In particular, a "curled" metasurface with giant chirality was experimentally demonstrated in Ref. [13], while in Ref. [14], it was shown that incrementing the metasurface area significantly ... WebApr 10, 2024 · On June 11, 2024, eLight Journal simultaneously published two research papers on brainwave-based metasurfaces, and proposed a new concept of metasurface controlled by mind for the first time in ...

WebAug 14, 2024 · The metasurface supports modes with electric and magnetic moments that are coupled via the chiral inclusions. The composite system, i.e., metasurface with chiral inclusions, is equivalently described by an infinite electromagnetic current sheet supporting an electric current j e and a magnetic current j m , which are coupled via a ... WebJan 9, 2024 · Here, we suggest a design of chiral metasurface supporting bound state in the continuum (BIC) and demonstrate experimentally chiroptical responses with ultra-high Q-factors and near-perfect ...

WebMar 1, 2024 · Chirality prevails in nature and is of great value for molecular biology, medicine, and bioscience. Due to the enhancement of chiroptical responses, chiral metasurfaces has attracted enormous ... WebMar 21, 2024 · A chirality-assisted phase is introduced to innovatively impose separate phase profiles in two circular polarization (CP) preserving channels, namely, two co-polarized output components under left-handed and right-handed circularly polarized (LHCP and RHCP) illuminations. Such a scheme is physically implemented by a proposed multi …

WebMar 5, 2024 · Planar optical chirality of a metasurface measures its differential response between left and right circularly polarized (CP) lights and governs the asymmetric …

WebMar 23, 2024 · Switching from structural to superstructural chirality, this work reports high CD of 6350 mdeg and large g CD of 0.49 in a perovskite chiral metasurface obtained … danita kroll caveWebApr 7, 2024 · This highlights the role of the chiral metasurface with α = 0.1 in producing CPE. And, if one wants to reverse the emission handedness, it can be simply reached by … danita greenWebApr 10, 2024 · A tiny perturbation in slant angle of the metasurface, enabled by our home-made slant-etching nanotechnology, leads to the significant breakthrough in demonstrating intrinsic chiral BIC in visible ... danita peoplesWebJun 1, 2024 · Here we propose a new scheme for tunable extrinsic chirality of terahertz metasurface controlled by near-infrared continuous wave. The metasurface is … danita cromwellWebSep 8, 2024 · These observations are consistent with the above analysis and confirm the capability of chiral metasurface in simultaneous control of spectrum, radiation pattern, and spin angular momentum of light … danitunmoreWebOptical metasurfaces with high-quality-factor resonances and selective chirality simultaneously are desired for nanophotonics. Here, an all-dielectric planar chiral metasurface is theoretically proposed and numerically proved to support the astonishing symmetry-protected bound state in the continuum (BIC), due to the preserved π … danita potter ruston laWebJun 1, 2024 · Here we propose a new scheme for tunable extrinsic chirality of terahertz metasurface controlled by near-infrared continuous wave. The metasurface is composed of silicon substrate and single-layer metal units, in which the silicon substrate is used as a photosensitive element. The simulated results show that the maximum circular dichroism … danita pettis