Optically Three-Dimensional Control of Magnetic Levitation Using Temperature-Sensitive Ferrite
Optically Three-Dimensional Control of Magnetic Levitation Using Temperature-Sensitive Ferrite
复制标题
使用温敏铁氧体对磁悬浮进行光学三维控制
DOI：
10.1143/jjap.47.3461
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
N. Umeda
中科院分区：
文献类型：
--
作者：
Y. Mizutani;Mizue Ebisawa;Y. Otani;N. Umeda
光驱动执行器具有非接触式的特点，可以远程施加移动能量。本文提出了一种新的磁悬浮系统的光学驱动方法。磁悬浮系统由钕磁体、铁氧体磁体、两块石墨和热敏铁氧体组成。钕磁体通过石墨的抗磁性和钕与铁氧体之间的磁力悬浮。当激光束照射在其中一种热敏铁氧体上时，由于光热效应，其磁化率容易降低。一个悬浮的条件是从数值方法。结果，在三维区域中成功地控制了移动。
Optically driven actuators have a feature of a noncontact for applying moving energy remotely. In this paper, we propose a new method for optically driving a magnetic levitation system, which consists of a neodymium magnet as a movement object, a ferrite magnet, two blocks of graphite and a temperature-sensitive ferrite. The neodymium magnet is levitated by the diamagnetism of the graphite and the magnetic force between the neodymium and the ferrite. When a laser beam is irradiated on one of the temperature-sensitive ferrites, its magnetic susceptibility easily decreases owing to the photothermal effect. A levitated condition is derived from a numerical approach. As a result, the movement is successfully controlled in a three-dimensional area.