Coarse-grained particle dynamics along helical orbit by an optical vortex irradiated in photocurable resins
Coarse-grained particle dynamics along helical orbit by an optical vortex irradiated in photocurable resins
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DOI：
10.1364/osac.2.000400
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发表时间：
2019-02-15
期刊：
影响因子：
1.6
通讯作者：
Kawano, Satoyuki
中科院分区：
文献类型：
--
作者：
Nagura, Ryo;Tsujimura, Tempei;Kawano, Satoyuki
携带轨道角动量的光学涡旋在材料加工、手性控制、粒子操纵等领域引起了人们的广泛关注。最近的一项研究实验证实，在光涡的照射下，可以形成恒定周期的聚合光固化树脂的扭曲纤维。怀疑这一现象是由于光学涡旋的角动量投射到光固化树脂上造成的。这种特殊纤维生长的详细机制尚不清楚。在本研究中，我们发展了一个粗粒粒子模型，从理论上模拟了考虑光吸收的瑞利散射理论框架下的粒子动力学，主要集中在聚合结构形成的一个方面。用粗晶粒子表示的扭转光纤的周期与实验值符合得很好，并且与激光的输入功率无关。此外，聚合纤维的形状可以通过调节光吸收程度来控制。(C)OSA开放获取出版协议条款下的2019年美国光学学会
Optical vortices, which carry orbital angular momentum, have attracted much attention in various research fields, such as materials processing, chirality control, and particle manipulation. A recent study experimentally confirmed that twisted fibers of polymerized photocurable resins with a constant period can be formed via irradiation by an optical vortex. It is suspected that this phenomenon is caused by the projection of the angular momentum of an optical vortex to the photocurable resin. The detailed mechanism of the growth of such peculiar fibers has not yet been clarified. In this study, which focuses on one aspect of polymerized structure formation, we develop a coarse-grained particle model in which the particle dynamics in the framework of the Rayleigh scattering theory involving light absorption is theoretically simulated. The period of the twisted fibers expressed using the coarse-grained particles is found to be in reasonable agreement with experimental values and independent of the input power of the laser. In addition, the shape of the polymerized fibers can be controlled by modulating the degree of light absorption. (c) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement