Route I shows the heterogeneous nucleation route, where the nanofibers are formed, followed by secondary growth on the wires which cause agglomeration.
12.
Heterogeneous nucleation is typically much faster than homogeneous nucleation because the nucleation barrier & Delta; G * is much lower at a surface.
13.
Thus, for sufficiently large driving forces, the interface can move uniformly without the benefit of either a heterogeneous nucleation or screw dislocation mechanism.
14.
The most important parameter to be controlled in this method for the synthesis of polyaniline nanofibers is the domination of homogeneous nucleation over heterogeneous nucleation.
15.
Additionally, the larger odontoblasts cause collagen to be secreted in smaller amounts, which results in more tightly arranged, heterogeneous nucleation that is used for mineralization.
16.
However, homogeneous nucleation is simpler and easier to understand than heterogeneous nucleation, so the easiest way to understand heterogeneous nucleation is to start with homogeneous nucleation.
17.
However, homogeneous nucleation is simpler and easier to understand than heterogeneous nucleation, so the easiest way to understand heterogeneous nucleation is to start with homogeneous nucleation.
18.
Within the model this is assumed to be because, by chance, these droplets do not have even one impurity particle and so there is no heterogeneous nucleation.
19.
However, if the reaction is left uncontrolled, heterogeneous nucleation will begin to dominate as the polyaniline will preferentially grow on existing particles, leading to irreversible agglomeration.
20.
Heterogeneous nucleation is typically much faster than homogeneous nucleation because the nucleation barrier { \ displaystyle \ Delta G ^ { * } } is much lower at a surface.
