Customizability in nanotechnology is achieved through various techniques, including:
1. Bottom-up approaches: Building nanostructures atom-by-atom or molecule-by-molecule. 2. Top-down approaches: Carving out nanoscale structures from larger materials. 3. Self-assembly: Allowing nanostructures to form spontaneously under certain conditions. 4. Chemical modification: Adjusting the chemical composition to achieve desired properties.