Dual band metamaterial absorber:Combination of plasmon and Mie resonances

• 作者: Chenchong Wang Minghao Huang Zhen Zhang Wei Xu
• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2020,（18）
• 页码范围: 37-40
• 页数: 4页
• 语种: 英文

摘要

A dual band metamaterial absorber composed of dielectric and metallic atoms with high symmetry was numerically designed and experimentally verified.Due to simultaneously generated electric and mag-netic resonances of both plasmon and Mie resonators,two absorption peaks with near unity absorptivity were obtained at 9.45 and 9.80 GHz.The loss of the electromagnetic wave at the first resonance fre-quency was mainly caused by ohmic loss based on plasmon resonance.For the second absorption peak resonance frequency,the incident wave was trapped inside the dielectric cube and the main loss of the electromagnetic wave was caused by dielectric loss based on Mie resonance.Most of the proposed dual band metamaterial absorbers were sensitive to the polarization direction hindering its potential appli-cations in scientific and technological areas.Combing both plasmon and Mie resonances provides a new and simple way to build dual band isotropic metamaterial perfect absorbers eliminating polarization effect.