Abstract: What is described in this case is a laboratory microchip having microspray means whose direction of spray can be altered. The microchip has a substrate 40 which has a channel structure provided on one side 41 thereof. On the other side (in the region of an edge of the substrate in the present case), there is a microspray tip 42. Substrate 40 is designed to be deformable particularly in a region 43, in which case the deformability may be achieved either by thinning the substrate material locally in this region 43 or by means of a linear perforation extending approximately perpendicularly to the plane of the paper. Alternatively, the deformability may be obtained by selecting a suitable material for the entire substrate. A microchip which has been bent in the manner indicated is shown in the bottom part of FIG. 3. The bending of the substrate which is shown has turned the direction of spray 44 of microspray tip 42 through 90°. The bending of the substrate may be permanent or reversible in this case.

Abstract: A laboratory microchip providing a microspray has a substrate having a channel structure on one side thereof. A microspray tip is on the other side of the substrate close to an edge of the substrate. The substrate is deformable in a particular region. Deformation results from thinning the substrate locally in the region or by providing a linear perforation that extends approximately perpendicular to the plane of the substrate. Alternatively, deformation can be obtained by selecting a suitable material for the entire substrate. Substrate deformation can be permanent or reversible.