Figure 1. Elasto-magnetic instability (EsMI) enables stepwise and amplified vibration under the same electrical input (IMAGE)

Seoul National University College of Engineering

Figure 1. Elasto-magnetic instability (EsMI) enables stepwise and amplified vibration under the same electrical input

Caption

Figure 1. Elasto-magnetic instability (EsMI) enables stepwise and amplified vibration under the same electrical input

(a) The input current applied to the electromagnet is converted into an alternating magnetic field, driving the vibration of the magnet–membrane structure.
(b) In the non-coupled system, the magnet shows low-amplitude, gradual vibration under the same electrical input.
(c) In the coupled elasto-magnetic vibration (C-EsMV) system, magnetic attraction between paired permanent magnets and elastic restoring force from the membranes create elasto-magnetic instability (EsMI), enabling amplified vibration.

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© Nature Communications, originally published in Nature Communications

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