State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871, China.
Nanoscale. 2012 Feb 7;4(3):874-8. doi: 10.1039/c1nr11268f. Epub 2011 Dec 21.
The interaction of magnetic resonators connected by nano-antennas is studied for the first time. Compared to a simple magnetic resonator, the absorptance can be obviously much enhanced and more electromagnetic energy can be converged by the assembled magnetic resonator and nano-antennas (nano-strip). The nano-strip plays the role of both nano-antenna and phase tuner for propagating surface plasmon polaritons (SPPs). The interaction of localized surface plasmon resonance and propagating SPPs can remarkably be tuned by simply changing the width of nano-strips. When lattice coherence happens at the magnetic resonance, maximum enhancements of local field are achieved. This approach paves a new way for the design of a metamaterial based on magnetic resonators.
首次研究了通过纳米天线连接的磁谐振器之间的相互作用。与简单的磁谐振器相比，组装的磁谐振器和纳米天线（纳米带）可以明显增强吸收率，并汇聚更多的电磁能。纳米带不仅充当了纳米天线，还充当了传播表面等离激元（SPP）的相位调谐器。通过简单地改变纳米带的宽度，就可以显著调节局域表面等离激元共振和传播 SPP 之间的相互作用。当磁共振发生晶格相干时，实现了局部场的最大增强。这种方法为基于磁谐振器的超材料设计开辟了新途径。
