Mapping of Vibrational Modes Revealing a Strong and Tunable Coupling in Two Juxtaposed 3R-WSe Nanodrums.

Two-dimensional (2D) material resonators have emerged as promising platforms for advanced nanomechanical applications due to their exceptional mechanical properties, tunability, and nonlinearities. We explored the strong mechanical mode coupling between two adjacent 3R-WSe nanodrums at room temperature. Combining a piezoelectric material, as noncentrosymmetric 3R-WSe, and vibration manipulation is the building block for phononic experiments with 2D materials.