Transmission Electron Microscopy (TEM) is a specialized technique that allows for the imaging of very small structures at a high resolution. It involves the use of a microscope that uses electrons to create an image rather than light. TEM is a specialized skill that requires specialized training and expertise in the handling and operation of the equipment, as well as knowledge of the principles and techniques used in electron microscopy. TEM is used in a wide range of fields, including materials science, biology, and physics, to study the structure and properties of various materials at the nanometer scale.