Assembling and ejection dynamics of polystyrene microparticles of 1 micrometer is revealed by applying CW laser trapping at solution surface. Initially a concentric circle-like assembly is rapidly prepared, giving a size much larger than the focus. Assembling evolves, showing some fluctuation in its size, which is accompanied with ejecting of some microparticles. The concentric-like structure is transformed into a hexagonal packing structure, then the ejection is much suppressed. Microparticles are ejected in a linearly aligned manner and its speed is slowed down with time and the distance. Assembling and ejection dynamics is considered in terms of light scattering of the trapping laser.
|期刊||Proceedings of SPIE - The International Society for Optical Engineering|
|出版狀態||Published - 1 一月 2019|
|事件||Optical Manipulation and Structured Materials Conference 2019 - Yokohama, Japan|
持續時間: 22 四月 2019 → 26 四月 2019