Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany.
Department of Chemistry, Asahikawa Medical University , 2-1-1-1 Midorigaoka-Higashi, Asahikawa 078-8510, Japan.
ACS Appl Mater Interfaces. 2017 Sep 27;9(38):33351-33359. doi: 10.1021/acsami.7b11375. Epub 2017 Sep 18.
Remotely controlling the movement of small objects is desirable, especially for the transportation and selection of materials. Transfer of objects between liquid and solid surfaces and triggering their release would allow for development of novel material transportation technology. Here, we describe the remote transport of a material from a water film surface to a solid surface using quasispherical liquid marbles (LMs). A light-induced Marangoni flow or an air stream is used to propel the LMs on water. As the LMs approach the rim of the water film, gravity forces them to slide down the water rim and roll onto the solid surface. Through this method, LMs can be efficiently moved on water and placed on a solid surface. The materials encapsulated within LMs can be released at a specific time by an external stimulus. We analyzed the velocity, acceleration, and force of the LMs on the liquid and solid surfaces. On water, the sliding friction due to the drag force resists the movement of the LMs. On a solid surface, the rolling distance is affected by the surface roughness of the LMs.
远程控制小物体的运动是很有必要的，特别是在材料的运输和选择方面。实现物体在固液界面间的转移并触发其释放将有助于开发新型材料运输技术。在这里，我们描述了使用类球形液滴（LM）将材料从水膜表面远程传输到固体表面。用光诱导的 Marangoni 流或气流推动 LM 在水面上运动。当 LM 接近水膜边缘时，重力迫使它们沿着水膜边缘滑落并滚到固体表面上。通过这种方法，可以有效地在水面上移动 LM 并将其放置在固体表面上。通过外部刺激可以在特定时间释放 LM 内封装的材料。我们分析了 LM 在液体和固体表面上的速度、加速度和力。在水面上，由于阻力导致的滑动摩擦力会阻碍 LM 的运动。在固体表面上，滚动距离受到 LM 表面粗糙度的影响。
