Is the sem of ceramic samples surface scanning or line scanning?

1 and sem are large-scale precision instruments for high-resolution micro-area morphology analysis, and sem testing is a testing method using scanning electron microscope.

2.sem is widely used for microscopic morphology analysis and qualitative analysis of bulk, sheet and film sample components such as composite materials, ceramic materials, metal materials, polymer materials, biological materials and electronic materials. It is an indispensable tool to study the relationship between the ultrastructure and properties of various materials. Therefore, the scanning electron microscope of ceramic samples is surface scanning. Surface scanning is scanning the observation area of the sample surface with an electron beam, and the defined elements of interest are displayed in different colors on the display.