Hello dear student

Nanoscience and nanotechnology

are the study and application of extremely small things and can be used across all the other science fields, such as chemistry, biology, physics, materials science, and engineering.

The foundational  research  includes: discovery and development of fundamental knowledge pertaining to new phenomena in the

physical

biological

engineering sciences

that occur at the nanoscale

elucidation of scientific and engineering principles related to nanoscale structures, processes.

Nanotechnology is being used in developing countries to help

treat disease and prevent health issues. The umbrella term for this kind of nanotechnology is Nano-medicine. Nanotechnology is also being applied to or developed for application to a variety of industrial and purification processes

Hope that's helpful

Best of luck