Question

Write long notes on scanning electron microscope?​

Answer 1

Answer:

Explanation:

➡️Scanning electron microscope is the type of microscope that forms the image by scanning the surface of the object by using the single beam of electrons.

➡️The electrons interact with the sample atoms and generate signals containing information regarding the composition and topography of the sample.

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Answer 2

scanning electron microscope (SEM)

• Scanning electron microscope has great depth of focus.
• a transmits a beam which focus at a specific point and scans each line of the surface of the simple in a rectangular rashtra pattern and provides a three dimensional image of high resolution.

These image provide information on:-

1. topography
2. morphology
3. composition

In this technique electrons can penetrate deeply into a sample and give an Everest chemical information with the depth.

application of (SEM)

• SEM is used to research control the quality and analyse the value in the field of material science.
• It is also used in the field of criminal and for forensic investigations to reveal the evidence and develop further for forensic insight .

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