Importance

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Abstract

Disclosed is a microanalysis chip adhesive sheet with an adhesive surface, which can be inexpensively but easily bonded to a substrate at a relatively low temperature, with which fabrication of analysis chips is simplified, and which has the capability of fixing a selective bonding substance to the sheet surface. The microanalysis chip is characterized in that a microanalysis chip adhesive sheet, which comprises a plastic sheet provided with an adhesive layer formed from an adhesive that contains a polymer in which monomer structural units that contain carboxyl radicals or acid anhydride radicals constitute 5-25% by weight of the [total] monomer structural units in the polymer, and a substrate, which has protrusions and recesses on the surface thereof, are bonded together so that the surface of the substrate having the projections and concavities and the adhesive layer of the aforementioned microanalysis chip adhesive sheet are on the inside. Gaps at the concave parts of the substrate between the substrate and the adhesive layer of the aforementioned microanalysis chip adhesive sheet form a flow path, a part of which is the aforementioned adhesive layer, and a selective bonding substance is fixed to the adhesive layer surface.

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First Claim