Fig. 1: Schematic of a bidirectional mechanical switching scheme. | npj Computational Materials

Fig. 1: Schematic of a bidirectional mechanical switching scheme.

From: Bidirectional mechanical switching window in ferroelectric thin films predicted by first-principle-based simulations

Fig. 1

The effective dipolar field is dominated at a relatively small tip force and can be employed to switch an initial downward SD state to an upward PD state, whereas the flexoelectric field is dominated at a relatively large tip force and can enable a back-switching. A reversible 180° mechanical switching scheme is achieved by applying tip force pulses with alternatively changing magnitude.

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