Patent ID: 6797139
Filing Date: 2004-09-28
Classification: G01N

Abstract:
A detection cell, comprising:a body comprising a first end that has a first opening, a second end that has a second opening, an interior cavity that fluidly connects said first opening an said second opening, two side portions, a top portion, and a bottom portion wherein at least one of said portions has a substantially flat surface adapted to receive excitation light; wherein said interior cavity is adapted to holding a support matrix for receiving a chemical species through said first opening, passing said chemical species through said interior cavity, and discharging said chemical species through said second opening, wherein said receiving and discharging said chemical species defines a direction of flow; wherein said excitation light has an axis of travel substantially perpendicular to said direction of flow; and wherein at least two of said first end, second end, each of said side portions, said top portion and said bottom portions are adapted to providing a first and a second guiding region, respectively, each having an index of refraction less than that of said support matrix.