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Near-field enhancement and subwavelength imaging in the optical region using a pair of two-dimensional arrays of metal nanospheres

机译:使用一对金属纳米球二维阵列在光学区域中进行近场增强和亚波长成像

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摘要

Near-field enhancement and subwavelength imaging properties of a device comprising a coupled pair of two-dimensional arrays of resonant nanospheres are studied. The concept of using two coupled material sheets possessing surface mode resonances for evanescent field enhancement is already well established in the microwave region. We show that the same principles can be applied also in the optical region, where the performance of the resonant sheets can be realized with the use of metallic nanoparticles. We present a design of such structures and study the electric field distributions in the image plane of such a device.
机译:研究了包括共振纳米球的二维二维阵列对的器件的近场增强和亚波长成像特性。在微波区域中已经很好地确立了使用具有表面模式共振的两个耦合的材料片来消逝场增强的概念。我们表明,相同的原理也可以应用在光学区域中,在该光学区域中,可以通过使用金属纳米颗粒来实现谐振片的性能。我们提出了这样一种结构的设计,并研究了这种设备的图像平面中的电场分布。

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