| abstract |
A microchip is provided, in which dead space provided only for holding excess fluid is made smaller. The microchip is formed by joining at least a first substrate with a trench formed on the substrate surface and a second substrate, and it has a fluid circuit formed by the trench and a surface of the second substrate facing the first substrate. The first substrate and/or the second substrate has a projection for moving fluid and/or air in a direction opposite to the direction of gravity during an operation of the microchip, and the projection is provided near an end portion of a through hole and/or an air vent. |