Periodic arrangement of metal nanoparticles by use of radiation pressure of ultrasonic waves and the excitation of localized surface plasmons

为了研究周期性排列的金属纳米粒子激发的局部表面等离子体激元，我们开发了一种数值算法来求解任意形状的纳米粒子组成的二维周期性阵列的光散射，并在数值上证实了与金属纳米粒子阵列周期性相关的集体表面等离子体激元共振。我们试图利用超声波的辐射压力在液体中周期性地排列金属纳米粒子，但我们尚未证实这种周期性结构的衍射光。

To investigate localized surface plasmons excited on periodically arranged metal nanoparticles, we develop a numerical algorithm for solving the light scattering by a two-dimensional periodic array of clusters consisting of nanoparticles having arbitrary shapes, and we numerically confirm the collective surface plasmon resonance associated with the periodicity of metal nanoparticle arrays. We try to periodically arrange metal nanoparticles in a liquid by use of the radiation pressure of ultrasonic waves, but we have not yet confirmed the diffracted light by the periodic structures.