article_snippet: The substance, made out of coated titanium dioxide nanoparticles, works because it is very, very water resistant.
article_snippet: The substance, made out of coated titanium dioxide nanoparticles is made out of coated titanium dioxide nanoparticles and any drop of moisture which touches The substance, made out of coated titanium dioxide nanoparticles turns into a ball and rolls away, cleaning up any dust or germs in The substance, made out of coated titanium dioxide nanoparticles path .
article_snippet: In addition, the coated titanium dioxide nanoparticles are so tough that the coated titanium dioxide nanoparticles survived being rubbed 40 times with sandpaper .
article_snippet: But coated titanium dioxide nanoparticles are so tough that coated titanium dioxide nanoparticles .
highlights_snippet: The substance is made out of coated titanium dioxide nanoparticles .
  