Transmission electron microscope Instrumentation Electron Source Electromagnetic lense system Sample holder Imaging system
Working Emission of a high voltage beam of electrons. Focusing of beam on specimen. Transmission through the specimen. Magnification of the image. Recording of the image by fluorescent screen, light sensitive sensor (camera).
Scanning Electron microscope Emission of a beam of by an electron gun. Passage of electron beam through the vacuum. Focusing of beam down toward the sample. Ejection of X-rays & es. From sample after hitting. Collection of by detectors & conversion to a signal. Transmission of signal to a screen/ final image