Figure 6

Propagation of a wavepacket of the in-plane phonons in (a) ideal nanoribbon and (b) nanoribbon with the double vacancy V₂(585) (nanoribbon width D = 1.23 nm) for wave number q = 0.6π, frequency ω(q) = 1569.3 cm⁻¹ (the wavepacket amplitude A = 0.0003 Å). Shown is the energy distribution at different time values t along the nanoribbon (n is the number of the elementary unit cell), time step dt = 0.15 ps. Transmission coefficient T(ω, q) = 0.0042.