Progress in Wettability Study of Reactive Systems

Figure 6

Drop base radius (a) and visible contact angle (b) as a function of time plotted on a logarithmic scale for Cu and Cu presaturated in Si on a (0 0 1) Si surface at 1100°C. The arrow in the 𝜃⁺(𝑡) diagram indicates the time when the visible contact angle equalled the value of 19° observed with Si presaturated Cu (CuSi) [40].

(a)

(b)