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Can nanoparticles save historic buildings?

Read the latest Nanopinion guest column by Dr. Joanna Dziadkowiec and Prof. Markus Valtiner on how unique properties of nanomaterials could be used to preserve historic buildings.

“It is possible to increase the resistance of the stone by treating it with certain types of silica nanoparticles. The idea sounds simple: inject a liquid, water-based suspension of dispersed nanoparticles into the damaged stone material, let the aqueous part evaporate, and wait until nanoparticles come together to form stable bridges between loosened grains. Ultimately, the silica nanoparticles act locally as cement between the original mineral grains.”

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