(A) Dependence of viscoelastic properties of representative soft PDMS elastomers on curing time measured at 80°C, 1 Hz, and a fixed strain of 0.5%. (B) Frequency dependence of the storage (red symbols, G') and loss (blue symbols, G″) moduli of representative soft elastomers measured at 20°C at a fixed strain of 0.5%. Different symbols show soft elastomers corresponding to different number of crosslinking chains per bottlebrush molecule: Diamonds – SE60, triangles – SE30, and stars – SE0. Recipe of each sample is listed in Table 1.