In this course we will examine the fundamentals of the atomistic structure of materials and the effect of defects in these materials. Starting at the angstrom length scale we will first exam bonding specifically determining the difference between intramolecular and intermolecular interactions. Additionally, these interactions will be differentiated between the energy of interactions and electronegativity. We will then build upon these concepts to and apply this to X-Ray diffraction. Building up to the nanometer length scale we will examine the structural motifs in crystalline materials specifically how we develop unit cells of simple cubic, body centered cubic, and face centered cubic. Finally, we will examine 0, 1, 2, and 3D defects in materials. For 0D defects we will examine and investigate vacancies, interstitial, and how to calculate the equilibrium concentrations of these defects as well as the Arrhenius temperature dependence. Additionally, 0D Kroger-Vink notation for writing defects in ionic crystals. Both intrinsic and extrinsic defects will be investigated. For 1D defects we will focus primarily on edge and screw defects. These defects can be determined by drawing Burger’s circuits in a plane to find the type of defect. For 2D and 3D defects we will examine grain boundaries and voids.