High resolution transmission electron microscopy (HRTEM) is a powerful
tool for the study of microstructure in crystals. HRTEM is used to id
entify the relationship between microstructure and properties in mater
ials, and to identify the nature of defect interactions. in this paper
we discuss the principles and practice of HRTEM, we discuss examples
of the application of HRTEM in materials science, and also we present
a review of recent developments in HRTEM.