Mechanical gradient magnetic field generator

A mechanical gradient magnetic field generator comprising a field generating element comprising at least one generator layer, wherein each of the at least one generator layer comprises:

• a stationary divider;
• a movable divider configured for moving in one or two displacement directions relative to the stationary divider, wherein the movable divider has an initial position;
• and
• a mechanical element configured to mechanically assist movement of the movable divider in the one or two displacement directions by a restoring force generated by the mechanical element's resilience towards the initial position;
• a set of rotatable magnets positioned between the movable divider and the stationary divider, wherein the set of rotatable magnets are mechanically coupled to the movable divider and to the stationary divider, wherein the mechanical coupling of the set of rotatable magnets is such that movement of the movable divider in the one or two displacement directions causes an individual rotation of each magnet of the set of rotatable magnets.