Nanotechnology refers to the study and manipulation of materials at the nanoscale level, which is one billionth of a meter. It has brought a revolution in modern science by enabling scientists to create, manipulate, and use materials in ways that were not possible before. The application of nanotechnology spans across several fields such as electronics, medicine, energy, and materials science. It has enabled the development of highly efficient electronic devices, energy storage systems, and improved drug delivery systems that have significantly impacted the quality of human life. Nanotechnology is also playing a vital role in the development of new materials such as graphene, which has impressive properties such as excellent conductivity, strength, and high surface area. With further research and development, nanotechnology is expected to play a significant role in solving many of the world's problems such as environmental pollution, food security, and disease control.