公开(公告)号：US08034245B1

公开(公告)日：2011-10-11

申请号：US12174781

申请日：2008-07-17

申请人： Oleksiy Snezhko ,  Igor Aronson ,  Wai-Kwong Kwok ,  Maxim V. Belkin

发明人： Oleksiy Snezhko ,  Igor Aronson ,  Wai-Kwong Kwok ,  Maxim V. Belkin

IPC分类号： B01D35/06

CPC分类号： B03C1/0335 ,  B03C1/288 ,  B03C2201/18

摘要： The present invention provides a method of driving liquid flow at or near a free surface using self-assembled structures composed of magnetic particles subjected to an external AC magnetic field. A plurality of magnetic particles are supported at or near a free surface of liquid by surface tension or buoyancy force. An AC magnetic field traverses the free surface and dipole-dipole interaction between particles produces in self-assembled snake structures which oscillate at the frequency of the traverse AC magnetic field. The snake structures independently move across the free surface and may merge with other snake structures or break up and coalesce into additional snake structures experiencing independent movement across the liquid surface. During this process, the snake structures produce asymmetric flow vortices across substantially the entirety of the free surface, effectuating liquid flow across the free surface.

摘要翻译： 本发明提供一种使用由经受外部交流磁场的磁性颗粒构成的自组装结构来驱动自由表面处或附近的液体流动的方法。 多个磁性颗粒通过表面张力或浮力被支撑在液体的自由表面处或附近。 交流磁场穿过自由表面，并且颗粒之间的偶极 - 偶极相互作用在自组装的蛇形结构中产生，其以横越交流磁场的频率振荡。 蛇结构独立地移动穿过自由表面，并且可以与其他蛇形结构合并或者分裂并聚结成经过液体表面独立运动的另外的蛇形结构。 在此过程中，蛇形结构在基本上整个自由表面上产生不对称流动涡流，从而使液体流过自由表面。