Patent ID: 7050660
Filing Date: 2006-05-23
Classification: B01L,G01N,Y10T

Abstract:
1. A microfluidic detection device comprising: (a) a cell body which is composed of a ceramic material; (b) a flow path through the cell body, the flow path comprising: (c) a first optical fiber having a portion located in the first junction so that a first substantially annular region is formed between the first optical fiber and the inner surface of the central segment, wherein the first optical fiber has a diameter and the first annular region has a length that is approximately 1–40 times the diameter of the first optical fiber; and (d) a second optical fiber having a portion located in the second junction so that a second substantially annular region is formed between the second optical fiber and the inner surface of the central segment, wherein the second optical fiber has a diameter and the second annular region has a length that is approximately 1–40 times the diameter of the second optical fiber; wherein the portions of the optical fibers located in the junctions are situated so that fluid entering the central segment of the flow path flows through one of the annular regions and fluid exiting the central segment of the flow path flows through the other annular region.