Asked Sep 11, 2019

a.) Provide a definition for a "Thin film"

b.) Provide a definition for a "semi-infinite slab."

c.) Describe how the concepts presented for parts "a" and "b" differ.

Compare and contrast the definition for a diffusion coefficient and a mass transfer coefficient.


Expert Answer

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Step 1

(a) Thin film is defined as thickness of material or substance which have been deposited on the surface ranging from nanometers to few micrometers.  Thin film deposition can be broadly categorized in physical and chemical deposition.

Application of thin film is on large scale depending on the kind of work such as decorative coatings, optical coatings, protective coatings, electrically operating coatings.

Step 2

(b) Semi infinite slab is body having single plane surface extends to infinity in all directions. Application ...

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Chemical Engineering

Heat Transfer

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