Complete optical absorption in periodically patterned graphene.

By S. Thongrattanasiri, F H L Koppens, F. García de Abajo. Physical Review Letters, 2011

1,081 citations recorded by the source corpus.

We demonstrate that 100% light absorption can take place in a single patterned sheet of doped graphene. General analysis shows that a planar array of small particles with losses exhibits full absorption under critical-coupling conditions provided the cross section of each individual particle is comparable to the area of the lattice unit cell. Specifically, arrays of doped graphene nanodisks display full absorption when supported on a substrate under total internal reflection and also when lying on a dielectric layer coating a metal. Our results are relevant for infrared light detectors and sources, which can be made tunable via electrostatic doping of graphene.

Subfields: Biomedical Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/d76084e98c1199cc337ec8f74565663d9bd63ce6

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Citations in the corpus

Thin perfect absorbers for electromagnetic waves: Theory, design, and realizations (2015, methodology): “However, the significant inductive impedance of graphene needs to be compensated by some sheet capacitance, which can be provided by breaking the graphene sheets into patches [119] or strips [120] (if only one polarization is of interest).”
Frontiers of graphene and 2D material-based gas sensors for environmental monitoring (2020, background): “Fortunately, due to the evanescent nature of the near field enhancement being in the order of a few nanometres, graphene and other 2D materials are well suited to integrations with this nanoscale technology [263, 268, 278].”
Losses in plasmonics: from mitigating energy dissipation to embracing loss-enabled functionalities (2017, background): “(b) Real (dotted lines) and imaginary (solid lines) parts of the permittivity of a doped semiconductor ITO (red) [89], polar dielectric SiO2 [89] (blue), superconductor YBa2Cu3O7 [90] (navy) and graphene at two different doping levels [91] (green & teal).”