Lattice structures are organized frameworks made up of repeating units, often found in materials like metals and crystals. These structures can be two-dimensional or three-dimensional and are characterized by their geometric arrangement, which helps determine the material's properties, such as strength and stability. In nature, lattice structures are common in crystalline solids, where atoms are arranged in a specific pattern. This arrangement influences how the material interacts with light, heat, and other forces. Examples include the diamond lattice and the face-centered cubic structure found in metals like copper and aluminum.