You have been tasked with characterising a protective coating on an automotive engine sensor. In answering this question, select one technique for each part (a-e) from those techniques taught in the module this academic year. For each part: - Outline the principles of the technique - State what sample preparation is required - Explain how the resulting data needs to be analysed - State an alternative technique that could be used Describe how you would determine: (a) if the coating is amorphous. [4 marks] (b) that the coating is composed of silica (SiO2) doped with carbon. [4 marks] (c) that the carbon dopant is segregated (rather than bonded within the silica glass network). [4 marks] (d) the thickness of the coating and confirm that it is non-porous and continuous (rather than patchy). [4 marks] (e) the coating surface is smooth rather than rough. [4 marks]