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These are different types of nanomaterials, named for their individual shapes and dimensions. Think of these simply as objects with one or more dimension at the nanoscale.
Nanoparticles are bits of a material in which all three dimensions of the object are within the nanoscale. Nanotubes have a diameter in the nanoscale, but can be several hundred nanometers long—or even longer. Nanoplates have a thickness at the nanoscale, but their other two dimensions can be quite large.
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