Nanostructured materials (with dimensions typically in the 1–100 nm range) can be synthesized using a wide variety of physical and chemical methods . Each approach differs in terms of cost, scalability, control over size/shape, and application suitability. 1. Physical Methods of Nanostructured Materials Physical methods generally involve top-down approaches , where bulk materials are broken down into nanoscale structures. (a) Mechanical Milling (Ball Milling) Bulk material is ground into nanoparticles using high-energy balls. Advantages: Simple, cost-effective, scalable. Disadvantages: Contamination, poor control over shape and size. (b) Physical Vapor Deposition (PVD) Material is vaporized and deposited on a substrate in vacuum. Techniques include: Thermal evaporation Sputtering Applications: Thin films, coatings, electronics. (c) Laser Ablation High-energy laser pulses strike a target material to produce nanoparticles. Advantages: High purity, no chemical contamination. Dis...
Osm Physics by Ashish
We are always ready to help you. physics