Scanning electron microscope, Mechanical Engineering

1- Explain the rationale of using a small WD to improve resolution.

2- In a tungsten SEM , Why does a high accelerating voltage provide the potential for higher resolution?  Why is this counterintuitive?

3- Comment on the desired coating thickness for an insulating sample where maximum resolution is required. What material/s do you suggest for coating and why?

Posted Date: 2/26/2013 2:19:50 AM | Location : United States

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