Tunable light trapping and absorption enhancement with graphene-based complementary metasurfaces

Liu, Tingting; Zhou, Chaobiao; Jiang, Xiaoyun; Cheng, Le; Xu, Chen; Xiao, Shuyuan

doi:10.1364/ome.9.001469

Cited by 9 publications

(2 citation statements)

References 56 publications

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“…In particular, N. Hu et al [54] pattern graphene into a 2D array comprising a building block of four merged two-cut split-ring resonators [51]; the authors show two near-perfect absorption windows at THz frequencies. Then, T. Liu et al [55] demonstrate tunable and polarization sensitive absorption with a 2D hole array in graphene around a wavelength of 10 microns; a spectral range that is highly relevant to biomolecule fingerprints [56].…”

Section: Patterned Atomically Thin Materialsmentioning

confidence: 99%

Feature issue introduction: Beyond Thin Films: Photonics with Ultrathin and Atomically Thin Materials

Foteinopoulou

Panoiu

Shalaev

et al. 2019

Opt. Mater. Express

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Rapid advances in nanotechnology have brought about the realization of material films that may comprise only as little as a few atomic layers. For example, semiconductors and metals of sub-10 nm thicknesses have been realized. Then, the graphene paradigm inspired a plethora of other 2D and quasi-2D materials. In this new era, materials have transcended beyond the traditional thin films to a domain of atomic-scale thicknesses, unleashing vast and unexplored possibilities for light-matter interactions. This Optical Materials Express virtual issue features a collection of thirty-five papers aiming to capture the current state-of-the art, trends and open research directions in photonics with ultrathin and atomically thin materials.

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Section: Patterned Atomically Thin Materialsmentioning

confidence: 99%

Feature issue introduction: Beyond Thin Films: Photonics with Ultrathin and Atomically Thin Materials

Foteinopoulou

Panoiu

Shalaev

et al. 2019

Opt. Mater. Express

View full text Add to dashboard Cite

show abstract

“…On the other hand, it should be kept in mind that various devices feature optimized designs exploiting curved surfaces. As a consequence, an extremely fine mesh is required for the staircase approximation of such configurations [21][22][23], which degrades the simulation's performance. Alternatively, frequency-domain numerical solvers can be employed [24][25][26][27], sacrificing the advantages of time-domain solutions.…”

Section: Introductionmentioning

confidence: 99%

Accurate Time-Domain Modeling of Arbitrarily Shaped Graphene Layers Utilizing Unstructured Triangular Grids

Amanatiadis

Zygiridis

Kantartzis

2022

Axioms

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The accurate modeling of curved graphene layers for time-domain electromagnetic simulations is discussed in the present work. Initially, the advanced properties of graphene are presented, focusing on the propagation of strongly confined surface plasmon polariton waves at the far-infrared regime. Then, the implementation of an unstructured triangular grid was examined, based on the Delaunay triangulation method. The electric-field components were placed at the edges of the triangles, while two different techniques were proposed for the sampling of the magnetic ones. Specifically, the first one suggests that the magnetic component is placed at the triangle’s circumcenter providing more accurate results, although instability may occur for nonacute triangles. On the other hand, the magnetic field was sampled at the triangle’s centroid, considering the second technique, ensuring the algorithm’s stability, but further approximations were required, leading to a slight accuracy reduction. Moreover, the updating equations in the time-domain were extracted via an appropriate approximation of Maxwell equations in their integral form. Finally, graphene was introduced in the computational domain as an equivalent surface current density, whose location matches the corresponding electric components. The validity of our methodology was successfully performed via the comparison of graphene surface wave propagation properties to their theoretical values, whereas the global error determination indicates the minimal triangle dimensions. Additionally, an instructive setup comprising a circular graphene scatterer was analyzed thoroughly, to reveal our technique’s advantages compared to the conventional staircase discretization.

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Electrically Tunable Terahertz Metamaterial Absorber Comprised Cu/Graphene Strips

Baqir

Naqvi

2020

Plasmonics

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Tunable light trapping and absorption enhancement with graphene-based complementary metasurfaces

Cited by 9 publications

References 56 publications

Feature issue introduction: Beyond Thin Films: Photonics with Ultrathin and Atomically Thin Materials

Feature issue introduction: Beyond Thin Films: Photonics with Ultrathin and Atomically Thin Materials

Accurate Time-Domain Modeling of Arbitrarily Shaped Graphene Layers Utilizing Unstructured Triangular Grids

Electrically Tunable Terahertz Metamaterial Absorber Comprised Cu/Graphene Strips

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