Photothermal trapping of dielectric particles by optical fiber-ring.
Photothermal trapping of dielectric particles by optical fiber-ring.
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DOI：
10.1364/oe.19.002711
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发表时间：
2011-01
期刊：
影响因子：
3.8
通讯作者：
Hongbao Xin;Hongxiang Lei;Yao Zhang;Xingmin Li;Baojun Li
中科院分区：
文献类型：
--
作者：
Hongbao Xin;Hongxiang Lei;Yao Zhang;Xingmin Li;Baojun Li
从水中去除介电颗粒和细菌是一个极其重要的全球性问题，特别是对于饮用水和卫生设施。这项工作提供了一个示范的光学净化水使用光纤环。悬浮于水中的捕集颗粒直径为2.08 μm，诱导光热效应的光波长为1.55 μm，功率为97 mW。纤维直径为6 μm，形成一个最小直径为167 μm，最大直径为350 μm的球拍形环。实验表明，当1.55 μm波长的激光束入射到光纤中时，粒子以4.2 μm/s的最大速度向环运动，并在环的中心被捕获/聚集。随着纤维环的移动，捕获/组装的颗粒被移动，并且可以通过去除颗粒来净化水。
The removal of dielectric particles and bacteria from water is an extremely important global issue, particularly, for drinking and sanitation. This work provides a demonstration of optical purification of water using an optical fiber-ring. The size of particles suspended in water for trapping is 2.08 μm in diameter and the wavelength of light used for inducing photothermal effect is 1.55 μm with a power of 97 mW. The fiber, 6 μm in diameter, was formed to a racket-shaped ring with a minimum diameter of 167 μm and a maximum one of 350 μm. Experiment indicates that the particles moved toward the ring with the highest velocity of 4.2 μm/s and are trapped/assembled in the center of the ring once the laser beam of 1.55-μm wavelength was launched into the fiber. With a moving of the fiber-ring, the trapped/assembled particles were moved and the water can be purified by removal of the particles.