Fig. 2: Simulation results of diamagnetic levitation and 3D trapping of graphite-dielectric composite plate resonators.
From: Highly stable diamagnetically levitated mechanical resonators with large masses exceeding 1.5 gram
a FEM simulated magnetic flux density generated from an array of cubic permanent magnets with alternating magnetization. b Vertical diamagnetic force (blue hollow circle) and total net force (red hollow square) with gap between magnets and square composite device (length and width L = w = 24.5 mm, thickness t = 1 mm, mass m = 928 mg, and graphite volume fraction Vf = 40%). Red arrows show a levitation height of h = 0.07 mm. c Estimated levitation height of the square composite devices. The width of devices is changed from w = 12 mm to 37 mm while the thickness is fixed to t = 1 mm. Diamagnetic susceptibility in the range of –160 × 10-6 to –170 × 10-6 is employed. d Estimated diamagnetic stiffness from b. e Calculated diamagnetic potential energy. The red dashed line shows potential from the simple harmonic resonator model. f Simulated lateral restoring force
