Chin. Phys. B ›› 2014, Vol. 23 ›› Issue (1): 17802-017802.doi: 10.1088/1674-1056/23/1/017802
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
王国栋a, 刘明海a, 胡希伟a b, 孔令华a, 程莉莉b, 陈兆权c
Wang Guo-Dong (王国栋)a, Liu Ming-Hai (刘明海)a, Hu Xi-Wei (胡希伟)a b, Kong Ling-Hua (孔令华)a, Cheng Li-Li (程莉莉)b, Chen Zhao-Quan (陈兆权)c
摘要: The influence of the gap on the absorption performance of the conventional split ring resonator (SRR) absorber is investigated at microwave frequencies. Our simulated results reveal that the geometry of the square SRR can be equivalent to a Jerusalem cross (JC) resonator and its corresponding metamaterial absorber (MA) is changed to a JC absorber. The JC MA exhibits an experimental absorption peak of 99.1% at 8.72 GHz, which shows an excellent agreement with our simulated results. By simply assembling several JCs with slightly different geometric parameters next to each other into a unit cell, a perfect multi-band absorption can be effectively obtained. The experimental results show that the MA has four distinct and strong absorption peaks at 8.32 GHz, 9.8 GHz, 11.52 GHz and 13.24 GHz. Finally, the multi-reflection interference theory is introduced to interpret the absorption mechanism.
中图分类号: (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))