Two forms of the alignment method. In form A, hard magnets are magnetized in the same direction before folding. In form B, soft magnets are magnetized to saturation during the folding.
(a) Two soft magnets in an external field and (b) the calculated alignment force on a nanomagnet of dimensions , with as a function of the membrane separation.
(a) Schematic of the alignment system model and (b) the angular trajectory for a membrane initially separated by with a 1° tilt in various field strengths.
(a) Simulated average final alignment error given a noise level in the magnetic dipole patterning precision for , , and arrays and (b) the percentage within a final alignment tolerance of for the and arrays.
Side view of a thick cantilever patterned with nanomagnets without an external magnetic field (a) and with an external field at 45° (b).
Optical micrograph of a folded membrane segment with nanomagnets that has been self-aligned to an array of nanomagnets on the substrate.
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