MEMS having a large fluidically effective surface

A microelectromechanical system (MEMS), comprising:

• a substrate comprising a cavity;
• a movable layer arrangement arranged in the cavity comprising a first beam, a second beam and a third beam that is arranged between the first beam and the second beam and that is fixed at discrete areas electrically insulated from the same;
• wherein the movable layer arrangement is configured to perform a movement along a direction of movement in-plane with respect to a substrate plane in response to an electrical potential between the first beam and the third beam or in response to an electrical potential between the second beam and the third beam;
• wherein the first beam, the second beam and the third beam are part of a first layer of the movable layer arrangement and the movable layer arrangement comprises a second layer that is arranged adjacent to the first layer along a direction perpendicular to the substrate plane, wherein the second layer is arranged movably along the direction of movement;
• wherein, in relation to the first layer, the second layer provides additional area for interaction with a fluid.