CRYSTAL STRUCTURE HUB
A complete undergraduate lecture series on crystal structure — from lattice theory and unit cells to Bravais lattices, packing fraction, and exam-oriented problem solving. Designed for BSc Physics, BTech Materials, and early-stage researchers.
Introduction to Crystal Structure
Crystalline vs amorphous solids, long-range atomic order, and why crystal structure governs material properties.
Lattice and Basis Concept
Mathematical definition of lattices, translational symmetry, and constructing crystals using lattice + basis.
Read LectureUnit Cell & Lattice Parameters
Primitive vs conventional cells, lattice constants, and calculation of atoms per unit cell.
Read LectureFCC, BCC & HCP Structures
Coordination number, atomic packing efficiency, and structural comparison of cubic and hexagonal systems.
Read LecturePacking Fraction & Density
Step-by-step derivation of atomic packing factor and theoretical density calculations.
Read Lecture14 Bravais Lattices
Crystal systems, symmetry classification, and complete overview of the 14 Bravais lattices.
Read LectureSolved Numerical Problems
Exam-oriented derivations and solved problems to strengthen conceptual clarity.
Practice NowMCQs & Quick Revision
Concept testing questions and formula recap for semester examinations and competitive exams.
Test Yourself