3M Innovative Properties Company

Hannah J Loughlin

Mikhail L Pekurovsky

Matthew S Stay

Ann M Gilman

Henrik B Van Lengerich

Kevin T Reddy

Matthew Rd Smith

Diagnostic devices for quantitative or qualitative analysis of a sample fluid including an analyte include at least two portions made from a hydrophilic material. The planar portions are stacked on each other and each occupy a different and substantially parallel plane to form a three-dimensional structure. At least one of the planar portions includes a hydrophobic region formed by applying a low surface energy material that extends through a thickness of the substrate portion from a first major surface to a second major surface thereof. The hydrophilic regions in the overlying substantially parallel substrate portions can be aligned with each other such that a fluid is passively transported between adjacent hydrophilic regions to provide a sample flow path between adjacent substrate portions.

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Mahtomedi, MN, United States of America

Hannah J Loughlin