Exercise 3.3-1

Quick Questions to

3.3 Nucleation and Growth

Here are some class exercises and quick questions:

What happens when first incoming atoms hits the surface of the substrate? Give at least 4 different possibilities.

Where would you expect the first imcoming atoms to be solidly bound? Use the proper terminology.

Define "sticking coefficient". Discuss the dependenc of the sticking coefficient for a given system on the precise substrate condition for a given substrate.

Explain briefly the major methods for investigations of the nucleation of thin films on substrates.

Explain how you get from interface energies to forces, and from forces to the wetting angle Q

Discuss and name the two major growth mode following from extreme values of Q

Discuss and name a third major growth mode

With frame

3.3.3 Summary to: 3.3 Nucleation and Growth