论文部分内容阅读
提出了一种在近红外波段实现超常材料可调谐完美吸收的方法。设计了一种超常材料圆环吸收结构,通过调节内径,详细研究了内径变化对完美吸收共振波长和吸收率的影响。结果表明,当内直径增大到140 nm时,该结构仍有90%以上的吸收率,共振波长漂移了200 nm,实现了可调谐的完美吸收。此外,通过LC磁共振模型和场强分析,更进一步验证了该方法的正确性。这种新的设计方法在保持较高吸收率的基础上实现了可调谐的完美吸收,对于超常材料完美吸收研究和应用提供了重要参考和依据。
A method to achieve tunable perfect absorption of metamaterials in the near infrared band is proposed. A meta-material ring absorbent structure was designed. By adjusting the inner diameter, the effect of the inner diameter variation on the perfect absorption resonance wavelength and absorption rate was studied in detail. The results show that when the inner diameter is increased to 140 nm, the structure still absorbs more than 90%, and the resonant wavelength drifts 200 nm, achieving a tunable perfect absorption. In addition, through the LC magnetic resonance model and field strength analysis, the correctness of the method is further verified. This new design method achieves a tunable perfect absorption on the basis of keeping a higher absorption rate, which provides an important reference and basis for the perfect absorption research and application of metamaterials.