Patent ID: 8890075

Claim:
A measuring cell for infrared analysis, comprising: a flow channel for fluid formed between first and second elements transparent to infrared radiation at least in sections thereof, infrared radiation being able to radiate through said first element into said flow channel and then exit said flow channel through said second element, said first and second elements being connected to each other in a fluid-tight manner; a connecting layer disposed between and connecting said first and second elements with very high mechanical strength and being of a sintered glass ceramic material and structured as a ceramic film, said connector layer defining a shape of said flow channel with said first and second elements; and a surface of at least one of said first and second elements bordering said flow channel and in an area of said connecting layer and including a surface structure, said surface structure having plurality of microneedles with a density of more than 10,000 microneedles per square millimeter, said surface structure limiting said flow channel and functioning as at least one of an antireflective layer and a filter layer for infrared radiation, said surface structure in said area of said connecting layer functioning as an adhesive agent attaching said one of said first and second elements to said connecting layer.