Crystalline nanomaterials come in various forms, each with unique properties: 1. Nanoparticles: These are particles between 1 and 100 nanometers in size, often used in catalysis and electronics. 2. Nanowires: These are wire-like structures with diameters in the nanometer range, useful in nanoelectronics. 3. Quantum Dots: These are semiconductor particles that exhibit quantum mechanical properties, used in imaging and optoelectronics.