公开(公告)号：US20100288689A1

公开(公告)日：2010-11-18

申请号：US12438505

申请日：2006-08-22

申请人： Liang Zhu ,  Wen-Tso Liu ,  Hanhua Feng ,  Hong Miao Ji ,  William Cheng Yong Teo ,  Ramana Murthy Badam

发明人： Liang Zhu ,  Wen-Tso Liu ,  Hanhua Feng ,  Hong Miao Ji ,  William Cheng Yong Teo ,  Ramana Murthy Badam

IPC分类号： B81B1/00 ,  B01D29/03 ,  B01D29/50

CPC分类号： B01D61/147 ,  B01L3/5027 ,  G01N1/4077

摘要： A microfluidic filtration unit for trapping particles of a predetermined nominal size present in a fluid is provided. The unit comprises a fluid chamber connected to an inlet for introducing the fluid to be filtered and an outlet for discharging filtered fluid, a filtration barrier arranged within the fluid chamber, said filtration barrier comprising a plurality of pillars arranged substantially perpendicular to the path of fluid flow when fluid is introduced into the fluid chamber, said pillars being aligned to form at least one row extending across said path of fluid flow, wherein each of said at least one row of pillars in the filtration barrier comprises at least one fine filtration section comprising a group of pillars that are spaced apart to prevent particles to be filtered from the fluid from moving between adjacent pillars, and at least one coarse filtration section comprising a group of pillars that are spaced apart to permit the movement of particles between adjacent pillars.

摘要翻译： 提供了用于捕获存在于流体中的预定公称尺寸的微粒的微流体过滤单元。 该单元包括连接到入口的流体室，用于引入要过滤的流体和用于排出过滤流体的出口，布置在流体室内的过滤阻挡层，所述过滤屏障包括基本上垂直于流体路径布置的多个柱 当流体被引入到流体室中时，所述柱被对准以形成跨越所述流体流动路径延伸的至少一排，其中所述过滤阻挡层中的所述至少一排柱中的每一个包括至少一个精细过滤部分，其包括 间隔开的一组支柱，以防止颗粒从流体中过滤，以在相邻的柱之间移动;以及至少一个粗过滤部分，其包括间隔开的一组支柱，以允许颗粒在相邻支柱之间移动。