Fig. 3From: Development of a new high sensitivity mechanical switch for augmentative and alternative communication access in people with amyotrophic lateral sclerosisDisplacement-force relationship of the micro-switch and magnetic components measured independently in a sample device. The red line represents the magnetic repulsive force component, the blue line is the switch force component for the key press condition, and the green line is the switch force component for the switch release condition. Forces are reported as a function of the displacement d (proportional to the rotation angle)Back to article page