Nonvolatile Electro-Mechanical Coupling in Two-Dimensional Lattices

Electro-mechanical coupling is of nice curiosity for purposes in sensors, actuators and vitality harvesters. Whereas the mechanical power controlling {of electrical} cost is studied extensively, the reversed coupling is never explored, particularly in two-dimensional (2D) lattices. Right here, we suggest a novel mechanism of electro-mechanical coupling that realizes the electric-field switching of dimensions of 2D lattice in a reversible and nonvolatile style, via the mediation of energy of interlayer interplay in ferroelectric bilayer techniques. Based mostly on first-principles calculations, the validity of this mechanism is additional demonstrated in a collection of actual bilayer supplies, e.g., MoS2/ReIrGe2S6, Sb/In2Se3 and bilayer In2Se3. The variations of interface from polarization are discovered to play an important position in realizing such nonvolatile electro-mechanical coupling, and the underlying bodily origin is mentioned. These explored phenomena and insights supply a novel avenue for the extremely desired nonvolatile electric-field management of mechanical pressure.

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