Radiation-Induced Correlation between Molecules Nearby Metallic Antenna Array
Radiation-Induced Correlation between Molecules Nearby Metallic Antenna Array
复制标题
金属天线阵列附近分子之间的辐射诱导相关性
DOI：
10.1155/2015/747580
复制
发表时间：
2015
影响因子：
1.5
通讯作者：
N. Yokoshi and H. Ishihara
中科院分区：
文献类型：
--
作者：
Y. Osaka;N. Yokoshi and H. Ishihara
我们利用离散偶极近似方法从理论上研究了嵌入金属天线附近的分子的光吸收。研究发现，由于分子之间的辐射引起的相关性，吸收的光谱峰发生了偏移。我们的工作最显着的特点是表明，即使当单个分子与不同天线附近的局域表面等离子体耦合时，位移也会大大增强。具体来说，我们首先考虑排列两组间距为几纳米的二聚金块的情况，并揭示光学吸收的强度和光谱峰值强烈依赖于分子的位置。此外，当二聚体嵌段和分子周期性排列时，峰移增加至~1.2 meV (300 GHz)。由于辐射引起的相关性对于集体光子发射至关重要，因此我们的结果意味着在设计的天线分子复杂系统中等离子体辅助超荧光的可能性。
We theoretically investigate optical absorption of molecules embedded nearby metallic antennas by using discrete dipole approximation method. It is found that the spectral peak of the absorption is shifted due to the radiation‐induced correlation between the molecules. The most distinguishing feature of our work is to show that the shift is largely enhanced even when the individual molecules couple with localized surface plasmons near the different antennas. Specifically, we first consider the case that two sets of dimeric gold blocks with a spacing of a few nanometers are arranged and reveal that the intensity and spectral peak of the optical absorption strongly depend on the position of the molecules. In addition, when the dimeric blocks and the molecules are periodically arranged, the peak shift is found to increase up to ~1.2 meV (300 GHz). Because the radiation‐induced correlation is essential for collective photon emission, our result implies the possibility of plasmon‐assisted superfluorescence in designed antenna‐molecule complex systems.