Apparatus and method for measuring small quantities of liquid and / or the movement thereof

Device for measuring small quantities of liquid and / or the movement on the surfaces of solids with - a substrate having a solid surface, - at least one location area (1, 3, 100, 200, 300) on the solid body surface, whose material is selected such that the occupied area (1, 3, 100, 200, 300) different wetting properties than the surrounding solid body surface such that the liquid to be measured preferably on the location area (1, 3, 100, 200, 300) resides, and the location area (1, 3, 100, 200, 300) a measurement area (3, 300) which tapers laterally, and - at least one measuring device (5, 7, 50, 70) for determining the extent of an amount of liquid (27, 29) along the tapered measuring range (3, 300).