Microelectromechanical and/or nanoelectromechanical differential pressure measurement sensor

MEMS and/or NEMS differential pressure measurement sensor comprising:

• at least one first membrane and at least one second membrane, each suspended from a substrate, the first membrane having a face subjected to a reference pressure and a second face subjected to a first pressure to be detected, the second membrane having a first face subjected to the reference pressure and a second face subjected to a second pressure to be detected,
• a rigid beam of longitudinal axis articulated with respect to the substrate by a pivot link around an axis said pivot link being located in a plane parallel to the first membrane and the second membrane which is different from the plane of the first membrane and the second membrane, said beam being in contact via a first zone to the first membrane and via a second zone to the second membrane such that the pivot link is situated between the first zone and the second zone of the beam,
• a cap delimiting with the substrate on the side of the first faces of a first and second membranes at least one hermetic cavity
• at least one movement sensor for measuring the movement of the rigid beam around the axis, said sensor being arranged at least in part on the substrate, said sensor being arranged in the at least one hermetic cavity.