nanostructures

Nanostructures are materials or objects engineered at the nanometer scale—typically between 1 and 100 nanometers, where a nanometer is one billionth of a meter.

At this scale, materials often exhibit properties different from their bulk counterparts due to quantum effects and high surface-area-to-volume ratios.

Nanostructures include nanoparticles, nanotubes, nanowires, and thin films, with applications in electronics, medicine, and materials science: The drug delivery system uses nanostructures to target cancer cells.