Field-Free Point 3D Lissajous scanner - #7
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An animated dashboard of a magnetic selection-field generator. Two 3×3 grids of square air coils, 10 cm apart and limited to ±30 A, create a magnetic gradient with a single field-free point (FFP) at the array centre; three sinusoidal drive fields steer the FFP along a closed 3D Lissajous path (3:2:1).
The 3D scene shows the 18-coil array with live per-coil currents (colour = sign/magnitude), the selection-gradient field arrows converging on the FFP, and the dashed trajectory the FFP traces through it. Side panels give live readouts of FFP position, sweep speed, axial gradient, and ±30 A current-budget usage. Drag to orbit, click to pause.
Backed by a Dyad/ModelingToolkit model that solves the field-null condition B(r,t)=0 every step; the page is a single standalone
viz_submission/index.htmlwith all data inlined.