Patent ID: 7906321

Claim:
A microreactor comprising: a. a semiconductor monolithic body; b. at least one buried channel in said monolithic body and a plurality of heating elements above said buried channel; c. said semiconductor monolithic body having openings extending through a top surface of the semiconductor monolithic body into said buried channel to fluidly connect an exterior of said semiconductor monolithic body into said buried channel; d. said openings comprising an inlet opening and an outlet opening, said inlet and outlet openings at opposite ends of said buried channel, and a plurality of monitoring openings therebetween and configured to allow optical inspection of said buried channel; e. said buried channel further comprising a sloping wall configured to reflect light entering the inlet or outlet openings into said buried channel; f. wherein each of said monitoring openings is positioned between a pair of said plurality of heating elements; g. a first transparent material layer arranged to close said monitoring openings; h. a second transparent material layer of glass over said first transparent material layer; i. at least one inlet reservoir formed in said first and second transparent material layers above said inlet opening; and j. at least one outlet reservoir formed in said first and second transparent material layers above said outlet opening.