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Figure 2. Influence of solid-liquid interfacial wettability on LM bridge evolution. (A) In situ TEM images of the dynamic formation, elongation, and breakup of an LM bridge between Mo substrates. (B) Theoretical model of the LM bridge, where the equilibrium wetting angle θ_e satisfies Young’s equation and the shape follows a parabolic equation. (C) Theoretical predictions of normalized elongation h/V^1/3 vs. normalized radius r/V^1/3 and maximum stretching length h_c vs. wetting angle θ_e for varying wettability conditions. (D) Experimental validation on Mo, Ge, Cu, and Zn substrates, showing normalized elongation h/V^1/3 vs. radius r/V^1/3 and maximum stretching length (h_c) vs. equilibrium wetting angle θ_e.