In which type of microscopy is a beam of electrons used to scan the specimen, followed by the conversion of the excited electrons to a three-dimensional image?
A) confocal laser scanning microscopy
B) phase-contrast microscopy
C) bright field microscopy
D) scanning electron microscopy
E) fluorescence microscopy

Question

Quizplus · Accepted Answer

Scanning electron microscopy (SEM) uses a focused beam of high-energy electrons to scan the surface of a specimen. The electrons interact with the atoms of the specimen, producing various signals that contain information about the specimen's surface topography and composition. These signals are then converted into a detailed three-dimensional image of the specimen's surface.

In Which Type of Microscopy Is a Beam of Electrons