What can be the best thickness measurement of a gold thin film, thickness in the range of within 10 nms ?
Optical absorbtion method could be one of better and simple in your case
Dear Johneph
I think if your film is homogeneous, you can use envelope method which illustrated in following attached file.
Dear colleague Johneph Sukham,
Have a nice time and good day,
Peace be up on you, your question's readers and all RG members.
One of the following you may use according to condition of the film.
Film thickness can be checked by
1- An interferometric method, more details is available at: TOLANSKY S. Multiple beam interferometry of surfaces and films. London: Oxford University Press, 1988: 147.
2- Using mass of the film, m according to the next details::
W1 is the weight of cleaned substrate
W2 is the weight of cleaned substrate plus film
W2-W1= the weight of the film
ΔW=mg
m = ΔW/g
m=ρXV ; ρ, is the density of film material and V is the volume of the film
the Volume = (Width X Length X Thickness) of the film
3- SEM or AFM (film-substrate ) cross section.
I wish this is useful and help you.
A. El-Denglawey
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