Difference Between TEM and SEM

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S. No Transmission Electron Microscope  Scanning Electron Microscope
1. Transmitted electrons produce image Secondary electron produce the image
2. Two dimensional image is formed Three dimensional image is formed
3. Used to study the thinner samples Used to study the thicker samples
4. Capable to obtain 1,000,000 times magnified image Capable to obtain 3,000,000 times magnified image
5. Resolution is upto 0.2nm Resolution is upto 10-20nm
6. Coating of specimen is not needed specimen like non-conductive materials must be coated by noble metals
7. Magnification power of the magnetic lens is a function of power of the objective lens It does not depend upon the function of power of the objective lens but depends upon the current supplied to the scanning coils
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