Patent ID: 8992859
Filing Date: 2015-03-31
Classification: B01L,B81B,B81C,G01F,Y10T

Abstract:
1. A microtube of a microfluidic device, the microtube comprising: a substrate structure comprising first and second substrates bonded together at respective first surfaces thereof, each of the first and second substrates having a corresponding second surface oppositely disposed from the first surface thereof so as to define, respectively, first and second outer surfaces of the substrate structure; a passage within a first region of the substrate structure, the passage having a cross-sectional profile defined by first and second channels in, respectively, the first surfaces of the first and second substrates, each of the channels having an arcuate cross-sectional profile and being enclosed between the first and second substrates to define the passage; and side portions within a second region of the substrate structure, the side portions being separated by the passage and by the first region of the substrate structure within which the passage is disposed, each of the side portions having an etched surface at the second outer surface of the substrate structure, the second region of the substrate structure defined by the side portions having a thickness that is less than a thickness of the first region of the substrate structure within which the passage is disposed.