Optical gradient force on Chiral nanoparticles
Optical gradient force on Chiral nanoparticles
复制标题
手性纳米颗粒上的光学梯度力
DOI：
10.1117/12.2573513
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Okamoto Hiromi
中科院分区：
文献类型：
--
作者：
Yamanishi Junsuke;Ahn Hyo-Yong;Hashiyada Shun;Okamoto Hiromi
纳米粒子的光学捕获是通过聚焦光束的强度梯度产生的光学梯度力来实现的。具有手性结构的粒子会受到依赖于圆极化(CP)的梯度力。在这里，我们研究了手性金纳米粒子上依赖于CP的梯度力。我们发现，在D型和L型粒子中，振幅(布朗运动位置的色散)都依赖于入射光的利手。基于对手性粒子的梯度作用力的研究结果，可望用圆偏振光处理手性纳米材料。
Optical trapping of nanoparticles is realized by optical gradient force originated from the intensity gradient of light with a focused beam. It is expected that the gradient force depending on the circular polarization (CP) acts on particles with chiral structures. Here, we investigate the CP-dependent gradient force on the chiral gold nanoparticles. We found that the amplitude (dispersion of the position of the Brownian motion) depends on the handedness of the incident light in both cases of D- and L-form particles. Based on the results on the gradient force for the chiral particles, it is expected that chiral nanomaterials can be handled by the circularly polarized light.