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Atomically thin spherical shell-shaped superscatterers based on a Bohr model

机译:基于玻尔模型的原子薄球壳形超级散射体

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摘要

Graphene monolayers can be used for atomically thin three-dimensional shell-shaped superscatterer designs. Due to the excitation of the first-order resonance of transverse magnetic (TM) graphene plasmons, the scattering cross section of the bare subwavelength dielectric particle is enhanced significantly by five orders of magnitude. The superscattering phenomenon can be intuitively understood and interpreted with a Bohr model. In addition, based on the analysis of the Bohr model, it is shown that contrary to the TM case, superscattering is hard to achieve by exciting the resonance of transverse electric (TE) graphene plasmons due to their poor field confinements.
机译:石墨烯单层可用于原子薄的三维壳形超级散射体设计。由于激发了横向磁性(TM)石墨烯等离子体激元的一级共振,裸露的亚波长介电粒子的散射截面显着提高了五个数量级。玻尔模型可以直观地理解和解释超散射现象。此外,基于玻尔模型的分析表明,与TM情况相反,由于电场限制较弱,难以通过激发横向电(TE)石墨烯等离子体激元的共振来实现超散射。

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