Question

What is scanning electron microscope?

Answer 1

A Scanning electron microscope (SEM) is an instrument which is a kind of electron magnifying lens that produces pictures of an example by examining the surface with an engaged light emission. The electrons connect with molecules in the example, creating different signs that contain data about the surface geography and structure of the example. The electron pillar is filtered in a raster examine design, and the situation of the bar is joined with the identified flag to deliver a picture. SEM can accomplish goals superior to 1 nanometer. Examples are seen in high vacuum in ordinary SEM, or in low vacuum or wet conditions in factor weight or ecological SEM, and at an extensive variety of cryogenic or hoisted temperatures with specific instruments.

Answer 2

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. The electron beam is actually examined in a raster scan pattern and then the beam position is combined with generated signals to produce the image.