Figure 6. Controlling the core-brush assemblies behaviour.

(a) Evolution of the frequency gap region (shaded area) for all modes with N, following the theoretical predictions (see the text) along ΓM. Inset: normalized gap width (f_c being the central frequency of the gap). Variation of the tangential stiffness values k_T with (b) the frequency of the flat band f_flat calculated in the middle of the band along ΓM (qd_ΓM=0.5π), and with (c) the degree of polymerization N of the assemblies considered, showing a power-law behaviour in both cases.