论文标题
通过光引导的介电体的设计和建模
Design and Modeling of a Versatile Micro/Nanomotor Propulsion System by Light-Guided Dielectrophoresis
论文作者
论文摘要
为了开发可以通过设计的机械运动有效响应外部刺激的活性材料是阻碍纳米机器和纳米机器人实现的主要障碍之一。在这里，我们提出了一种创新的工作机制，该机制允许通过简单的可见光刺激对AC介电粒子对半导体微/纳米运动的多胎转移控制。我们通过对Maxwell-Wagner弛豫和电气双层充电效应进行建模，研究水悬浮水性悬浮液中各种几何颗粒的介电性作用。经过了解，我们合理地设计了一个可以多功能传输半导体微型/纳米运动的操纵系统，并通过调整电场中的光强度，同时将其定向到所需的方向。这项研究可能指导开发具有高多功能性和控制力的新型微型/纳米机械平台。它与纳米体和纳米式设备相关。
To develop active materials that can efficiently respond to external stimuli with designed mechanical motions is one of the major obstacles that have hindered the realization of nanomachines and nanorobots. Here, we propose an innovative working mechanism that allows multifold-translational-motion control of semiconductor micro/nanomotors by AC dielectrophoresis with simple visible-light stimulation. We study the dielectrophoresis forces on semiconducting particles of various geometries in aqueous suspension by modeling with the consideration of both the Maxwell-Wagner relaxation and electrical-double-layer-charging effect. With the obtained understanding, we rationally design a manipulation system that can versatilely transport semiconductor micro/nanomotors and orient them towards desired directions at the same time by tuning the light intensity in an electric field. This research may guide the development of a new type of micro/nanomachine platform with high versatility and control. It is relevant to nanorobotics and nanodevice assembly.
