Nanotechnology deals with structures and devices on the scale of nanometers. At this scale, the properties of materials can be drastically different from their macroscopic counterparts. Computational chemistry allows scientists to model and predict these unique properties, facilitating the design of new nanomaterials and nanodevices. It is used to simulate the behavior of nanoparticles, nanotubes, and other nanostructures, thereby accelerating the development of innovative nanotechnological applications.