Diamond thin films question...

Question

The purpose of the hydrogen gas used in production of diamond thin films from methane and microwaves is ...

a) to reduce the surface of the substrate to improve adhesion

b) it dislodges surface atoms making a rougher surface to which the diamond will adhere

c) its combustion produces the high temperatures necessary for the process

d) it dilutes the methane gas to prevent formation of a thick layer of diamond

e) to impede formation of graphite

Answer 1

e