Fig. 2. Mechanical properties of the folded diaphragm.
a Customizable shape of the magnetic diaphragm in triangle, square, hexagon, and circular. b comparisons of deformation range between the folded and flat magnetic diaphragm under the 40 mT magnetic field by vision. c comparisons of the displacement (average value and standard deviation of 9 cycles measurement) in the top point between the folded and flat magnetic diaphragm under different magnetic fields (range from 0–40 with 5 mT increments). d comparisons of the elastic-resistance force of the diaphragm center between the folded and flat magnetic diaphragm under different displacements ranging from 0–10 mm with 1 mm increment (average value and standard deviation of 9 cycles measurement).