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arXiv 1402.1279physics.opticscond-mat.mes-hallcond-mat.mtrl-sciquant-ph
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基于金属弦配合物的分子裂环谐振器

Molecular Split-Ring Resonators Based on Metal String Complexes

Yao Shen, Hsin-Yu Ko, Qing Ai, Shie-Ming Peng, Bih-Yaw Jin

摘要:

金属串络合物或扩展金属原子链(EMAC)属于由四个多齿有机配体螺旋包围的直接键合的金属原子的线性链组成的分子家族。这四种有机配体通常由重复的吡啶基单元、单氮取代的杂环轮烯、由独立的酰胺基桥接而成。在这里,在本文中,我们表明,这些杂环轮烯实际上是纳米级的分子分裂环谐振器(SRR),可以同时表现出负的电容率和磁导率在紫外-可见光区。此外,单层自组装EMAC是分子SRRs的周期性阵列,其可以被认为是负折射率材料。在量子尺寸效应显著的分子尺度下,我们采用紧束缚方法,得到了这些分子的介电常数和磁导率随频率的变化,并仔细考虑了它们的张量性质。

英文摘要:

Metal string complexes or extended metal atom chains (EMACs) belong to a family of molecules that consist of a linear chain of directly bonded metal atoms embraced helically by four multidentate organic ligands. These four organic ligands are usually made up of repeating pyridyl units, single-nitrogen-substituted heterocyclic annulenes, bridged by independent amido groups. Here, in this paper, we show that these heterocyclic annulenes are actually nanoscale molecular split-ring resonators (SRRs) that can exhibit simultaneous negative electric permittivity and magnetic permeability in the UV-Vis region. Moreover, a monolayer of self-assembled EMACs is a periodic array of molecular SRRs which can be considered as a negative refractive index material. In the molecular scale, where the quantum-size effect is significant, we apply the tight-binding method to obtain the frequency-dependent permittivity and permeability of these molecular SRRs with their tensorial properties carefully considered.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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