**Zero-Dimensional Nanostructures :** A zero-dimensional structure is one in which all three dimensions are in the nanoscale.

**For example :** Nanoparticles.

**One-Dimensional Nanostructures :** A one-dimensional nanostructure is one in which two dimensions are in the nanoscale.

**For example :** Nanowires and Nano rods.

**Two-Dimensional Nanostructures :** A two-dimensional nanostructure is one in which one dimension is in the nanoscale.

**For example :** Thin films.