Accuracy in nanotechnology is paramount because the properties of materials can change dramatically at the nanoscale. For instance, a slight variation in the size or shape of nanoparticles can lead to significant differences in their chemical reactivity, electrical conductivity, or biological interactions. Accurate measurement techniques are essential for characterizing these materials and ensuring that they meet the required specifications for their intended applications. Moreover, accurate control during the fabrication process is crucial for developing reliable nanodevices. Techniques such as electron beam lithography and atomic layer deposition rely on precise manipulation of materials at the atomic level to create functional nanostructures.