Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
The deterioration of historic buildings has become an increasingly urgent issue and consequently the need of a more sustainable management of the built heritage as well. An EU initiative has developed complex new materials designed specifically to restore heritage materials.
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