Transmission Electron Microscopes (TEM) are high-resolution imaging instruments that use a beam of electrons transmitted through ultra-thin specimens to reveal fine structural details at the nanometer scale. TEM allows visualization of internal cellular structures, organelles, viruses, and macromolecules that are not visible with light microscopy.
Widely used in materials science, biology, medicine, and nanotechnology, TEM provides detailed information on morphology, crystallography, and composition of specimens. Specimens typically require special preparation, including sectioning and staining, to achieve optimal imaging.