公开(公告)号：US20150343442A1

公开(公告)日：2015-12-03

申请号：US14724123

申请日：2015-05-28

Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA

Inventor： Daniel Elliot SAMEOTO

IPC: B01L3/00 ,  B29C33/38 ,  B29C45/00 ,  B29C59/00 ,  B29C47/00

CPC classification number: B01L3/502715 ,  B01L2400/0421 ,  B29C33/3842 ,  B29C33/3878 ,  B29C33/405 ,  B29C33/42 ,  B29C41/003 ,  B29C47/0004 ,  B29C47/0021 ,  B29C59/00 ,  B29K2833/12 ,  B29K2883/00 ,  B29K2995/0098 ,  B29L2007/00 ,  B29L2009/00 ,  B81B2201/058 ,  B81C3/001 ,  B81C99/009 ,  C09J2201/626 ,  Y10T137/6851 ,  Y10T428/23957

Abstract: A reversible bonded microfluidic structure comprises an overhanging cap or gasket structure atop a continuous microfluidic channel wall. An overhanging gasket structure may reduce stress concentrations at the edge of the channel wall and can permit improved reversible adhesion of the channel wall and adjacent dry adhesive fibers. In one example, reversible adhesion of the overhanging channel wall gasket and adjacent dry adhesive fibers may approach 1 MPa in axial loading. An overhanging gasket structure of the microfluidic channel wall may comprise a single “fiber” that is continuous around the perimeter of the desired microfluidic channel shape, and may define a self-sealing gasket which will contain fluid. The overhanging gasket structure may be surrounded by further overhanging or undercut dry adhesive fibers to enhance the adhesion and help make the rest of the surface more tolerant to defects and surface roughness.

Abstract translation: 可逆结合微流体结构包括在连续的微流体通道壁上方的悬垂盖或垫圈结构。 突出的垫圈结构可以减小通道壁边缘处的应力集中，并且可以改善通道壁和相邻的干燥粘合纤维的可逆附着。 在一个示例中，悬垂通道壁垫圈和相邻的干粘合纤维的可逆粘合可以在轴向负载中接近1MPa。 微流体通道壁的悬垂垫圈结构可以包括围绕所需微流体通道形状的周边连续的单个“纤维”，并且可以限定将包含流体的自密封垫圈。 突出的衬垫结构可以被进一步的悬垂或底切干燥的粘合纤维包围以增强粘合性，并且有助于使表面的其余部分更容忍缺陷和表面粗糙度。