Tapered glass capillaries for the optical manipulation and sorting of nanoparticles: practical considerations
Tapered glass capillaries for the optical manipulation and sorting of nanoparticles: practical considerations
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DOI：
10.1117/12.2616160
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发表时间：
2021-10
期刊：
影响因子：
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通讯作者：
Christophe Pin;R. Otsuka;K. Sasaki
中科院分区：
文献类型：
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作者：
Christophe Pin;R. Otsuka;K. Sasaki
虽然光学力可以用于基于纳米颗粒的光学性质来选择和筛选纳米颗粒，但是它们的机械作用通常太弱而不能克服分散在液相中的纳米颗粒的快速布朗扩散。在光学分选技术的各种理论建议和实验实现中，具有微米或亚微米直径的玻璃毛细管提供了一种有前途的方法来实现纳米颗粒的有效光学分选。通过将分散的纳米颗粒限制在几毫米长的距离内的光路中，它为弱光机械相互作用提供了足够的时间/距离，以影响宏观尺度下纳米颗粒的运动和浓度。在这项工作中，我们报告我们最近的实验结果。
While optical forces could be used to select and sieve nanoparticles based on their optical properties, their mechanical action is usually too weak to overcome the fast Brownian diffusion of nanoparticles dispersed in a liquid phase. Among various theoretical proposals and experimental realizations of optical sorting techniques, glass capillaries with micrometer or submicrometer diameters offer a promising approach to achieve efficient optical sorting of nanoparticles. By confining dispersed nanoparticles into the light path over few-millimeter-long distances, it provides enough time/distance for weak optomechanical interactions to affect the motion and the concentration of nanoparticles at the macroscopic scale. In this work, we report on our recent experimental results.