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Some Optical Exceptions of Molecular Nanofilm-Structures

机译：分子纳米膜结构的一些光学例外

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A microscopic theory of dielectric properties of ultrathin molecular films was formulated in boson and nearest-neighbor approximation. Dispersion law and distribution and probability of occurrence of exciton states were determined. Calculation of dynamical permittivity using the method of multi-pole Green's functions has shown that the threshold of light absorption can be shifted by frequencies with the change of the film thickness. Permittivity dependence on external electromagnetic field indicates the existence of discrete resonant lines, thus characteristic peaks appear in the frequency dependence of absorption index. The width of peaks increases with the increase of exciton spectral weights and there is a possibility to manage film dielectric response with suitable selection of values of boundary perturbation parameters. Refraction indices have abrupt changes in places where absorption index changes and refraction of ultrathin film has several--not very narrow peaks. All peaks are located in the infrared area. This can indicate a great contribution for the practical ultrathin film engineering, especially for the preparation of nanoparticles for drug delivery in nanomedicine.
机译：用玻色子和最近邻近似法建立了超薄分子膜介电性能的微观理论。确定了色散规律和分布以及激子态的发生概率。使用多极格林函数的方法计算动态介电常数表明，随着膜厚度的变化，光吸收的阈值可以随频率而变化。介电常数对外部电磁场的依赖性表明存在离散的谐振线，因此特征峰出现在吸收指数的频率依赖性中。峰的宽度随激子光谱权重的增加而增加，并且有可能通过适当选择边界摄动参数的值来管理膜介电响应。折射率在吸收率发生变化的地方会发生突变，而超薄膜的折射率会出现多个峰（不是很窄）。所有峰均位于红外区域。这可以表明对于实用的超薄膜工程，特别是对于制备用于纳米药物中的药物递送的纳米颗粒，做出了巨大贡献。

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