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Nanomaterials are nanometer-scale structures with at least one dimension of fewer than 100 nanometers. Nanomaterials are classed as zero-dimensional, one-dimensional, two-dimensional, or three-dimensional. Nanoparticles are zero-dimensional nanomaterials that can be amorphous or crystalline and come in a variety of shapes and sizes.<br><br>Nanotubes, nanorods, and nanowires are examples of one-dimensional nanomaterials. Nanofilms, nanolayers, and nano-coatings are examples of two-dimensional nanomaterials with plate-like structures.
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