Patent ID: 7687031

Claim:
A microchip, comprising a block constituting a reaction system, wherein said reaction system includes: a reaction region including biomolecules immobilized therein in the form of a spot(s) or a strip(s), the biomolecules being immobilized on a first substrate in a porous form that enlarges an area of contact surface between the biomolecules using an electrospray deposition method; a supply flow channel region including a supply flow channel formed in a second substrate, the supply flow channel being arranged in a mesh shape so that an area of the reaction surface can significantly be increased, the first and second substrates being bonded so that one surface of the first and second substrates has concave portions, the electrospray deposition method further providing biomolecules-coating-films disposed on whole walls of the concave portions in order to increase an area of reaction surfaces, the reaction region formed by bonding the first and second substrates enabling original biomolecules to generate particular biomolecules in successive reactions such that a multi-step reaction can be done on the reaction region at one operation, the supply flow channel connected to the reaction region for supplying a sample solution; and a recovery flow channel region including a recovery flow channel connected to the reaction region for recovering the sample solution which passes through at least a part of the reaction region so as to uniformly feed to the snot(s) or the strip(s) in parallel; wherein said reaction system is one of a plurality of reaction systems, the plurality of reaction systems being equal to or greater than 10 systems per cm 2 .