Development of Micro Fluid Driving Technique by Electro-Magnetic Spinning System

本研究的目的是建立微流体驱动系统的基础技术，应用于微流体输送装置。我们开发的电磁旋转技术，使远程操纵的微机械元件，通过三维控制的扭矩引起的探针球。我们成功地构建了一个实验系统，通过驱动探头的滚动运动，将小探头球送到任意位置。此外，通过观察驱动力矩与探针运动之间的关系，我们成功地确定了系统的局部力学性质。我们发现固液界面的状态对分子吸附敏感，我们现在正在将该系统的领域扩展到化学和生物功能的精确检测。

The purpose of this study is establish fundamental technologies of the micro driving system of fluid, which can be applied for the transportation devices in the micro-fluidics. The electro-magnetically spinning technique developed by us enables the remote manipulation of micro-mechanical elements, through the three dimensional control of the torque induced to the probe sphere. We successfully constructed an experimental system to deliver small probe sphere to an arbitrary position by driving the rolling motion of the probe. In addition by observing the relation between the driving torque and the motion of the probe, we succeeded in determining the local mechanical properties of the system. We found that the state of the solid-liquid interface is sensitive to the molecular adsorption and we are now extending the field of the system to the accurate detection of the chemical and biological functions.