Which from following nanomaterials has two dimensions less than 100 nm ?

Nano wires are one dimensional nanostructures in which two dimensions are in the nanoscale ( $ \lt 100 \mathrm{~nm}$ ). Microcapsules, quantum dots and nanorings are zero dimensional structures in which all three dimensions are in the nanoscale ( $ \lt 100 \mathrm{~nm}$ ).