论文标题
基于介电中尺度粒子的亚波长场定位
Subwavelength field localization based on dielectric mesoscale particle with single and blind nanohole array
论文作者
论文摘要
研究了一些新的不寻常的物理现象和与MIE大小参数附近的介电中尺度颗粒相关的效果，并在过去十年中发现了。在本文中，我们提出了纳米霍尔斯结构的波长式介电立方颗粒，其折射率在两个附近，纳米霍尔斯的阵列可以充当多个近场探针，以同时照亮样品表面，并且具有超过最近乎现有的近场成像的潜力。我们还提供了由传统光学材料制成的介电缸或球体的单纳米结构的概念。粒子中纳米荷尔的直径的选择“转移”到共振模式中时，当粒子阴影部分的场特性不是由波长确定，而是由纳米荷尔的大小确定。因此，从粒子退出处的聚焦点的直径可能比固体浸入衍射极限要小得多。
Some new unusual physical phenomena and effects associated with dielectric mesoscale particles with Mie size parameter near 10 were studied and have been discovered during the last decade. In this paper, we propose nanoholes structured wavelength-scaled dielectric cubic particle with refractive index near two, where the array of nanoholes can act as a plurality of near-field probes to simultaneously illuminate the sample surface and it has the potential of surpassing the performance of most existing nearfield imaging approaches. We also offer the concept of the single nano-structuring of a dielectric cylinder or sphere made from conventional optical materials. The choice of the diameter of the nanohole in the particle "transfers" it into the resonance mode, when the characteristics of the field localized in the shadow part of the particle are determined not by the wavelength, but by the size of the nanohole. Thus, the diameter of the focused spot at the exit from the particle can be much smaller than the solid immersion diffraction limit.
