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Multi-band microwave metamaterial absorber based on coplanar Jerusalem crossesMulti-band microwave metamaterial absorber based on coplanar Jerusalem crosses
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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. 相似文献
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给定简单图G1和G2,G1的顶点标记为v1,v2………,vn1.图G1和G2的冠图G1.G2被定义为取n1个G2的拷贝,然后连接vi与相应的G2的第i个拷贝中的每一个点(i=1,2………,n1)所得到的图.在文献[2]中,对连通图G1和任一正则图G2,S.Barik,S.Pati和B.K.Sarma给出了G1.G2的邻接谱的完整的表达式.继文献[2]的工作进一步考虑当G2是非正则图时冠图G1.G2的邻接谱.本文完全确定了冠图G1.Km1,m2的邻接谱,其中Km1,m2是完全二部图. 相似文献
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光敏微晶玻璃微流控芯片材料制备 总被引:1,自引:0,他引:1
以具有良好的光化学加工性能的光敏微晶玻璃作为芯片材料对于简化微流控芯片制备工艺、降低芯片制备成本具有重要意义.基于这一点,利用XRD和SEM技术,研究了不同制备方法、不同玻璃组分对玻璃光化学加工性能的影响.研究表明,以溶胶凝胶法制备的均质粉体作为原料,采用低温熔制手段能提高玻璃的光化学加工性能,合理的光敏剂和晶核剂含量(分别为0.005%和0.012%)有助于提高光化学加工表面的平整度.从研究结果来看,调节玻璃中光敏剂和晶核剂含量以进一步提高玻璃光化学加工表面质量是今后工作的努力方向. 相似文献
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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. 相似文献
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