Investigating the Role of the Contact Line in Heterogeneous Nucleation with High Speed Imaging
نویسندگان
چکیده
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxix 1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Atmospheric Nucleation . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Nucleation Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.1 Nucleation Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2.2 Gibbs Barrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2.2.1 Homogenous Nucleation . . . . . . . . . . . . . . . . . . 5 1.2.2.2 Heterogeneous Nucleation . . . . . . . . . . . . . . . . . 7 1.2.3 Line Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.3 Homogeneous Surface Crystallization . . . . . . . . . . . . . . . . . . . . 12 1.4 Heterogeneous Surface Crystallization (Contact Nucleation) . . . . . . . . 13 1.4.1 Nucleation by External Crystal “Cooper mode” . . . . . . . . . . . 14 1.4.2 Thermal Gradients . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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