CAJ | 학술논문

　　设计了一种十字架型电磁超材料吸波体，采用CST studio suite 2009频域求解器提取S参数进行仿真研究，并计算了其吸波率，在24.65 THz和35.25 THz得到两个吸收峰，吸收率分别为0.83和0.997。改变材料结构尺寸，在7.3 THz达到完美吸收，吸收率接近于1。将THz波段的超材料吸波体结构尺寸放大1000倍，在GHz波段同样可以达到完美吸收，说明超材料吸波体可通过对结构尺寸调节改变吸收波段。另外研究了这种吸波体的吸收机理，发现吸收主要在第一层的十字架金属单元层，可用于Bolometer探测器的设计。
　　설계료일충십자가형전자초재료흡파체，채용CST studio suite 2009빈역구해기제취S삼수진행방진연구，병계산료기흡파솔，재24.65 THz화35.25 THz득도량개흡수봉，흡수솔분별위0.83화0.997。개변재료결구척촌，재7.3 THz체도완미흡수，흡수솔접근우1。장THz파단적초재료흡파체결구척촌방대1000배，재GHz파단동양가이체도완미흡수，설명초재료흡파체가통과대결구척촌조절개변흡수파단。령외연구료저충흡파체적흡수궤리，발현흡수주요재제일층적십자가금속단원층，가용우Bolometer탐측기적설계。
A cross-shaped metamaterial absorber was desi gned. The S parameters and absorptivity were calculated by CST studio suite 2009, and the frequency domain solver was utilized. The absorber shows two absorption peaks of 0.83 at 24.65 THz and 0.997 at 35.25 THz. Through changes of the size of elements, a metamaterial perfect absorber with near-unity absorbance is achieved in 7.3 THz. To magnify 1 000 times of the absorber size in terahertz frequency, the perfect absorber can be achieved in the GHz frequency, thus providing a means to dynamically control the absorbing band. In addition, the absorbing mechanism was studied. Simulations reveal that the majority of energy is dissipated in the metallic cross plane. This type of metamateial absorber can be designed for the bolometer detector.