A nanoparticle spray can turn regular paper into superpaper, rendering it waterproof, antimicrobial, magnetic and probably very expensive. Who said paper was an old technology?
Scientists at the Istituto Italiano di Tecnologia in Genoa, Italy, developed a process to cover any cellulose fiber, like paper or fabric, with a reactive coating. It involves combining the fiber molecules with a nanoparticle solution, creating a polymer matrix.
The title may be a bit of a misnomer: Really the first hydrocolloids that most people use tend to be flour, gelatin, and cornstarch. The difference is that when people first learn to cook, they don't realize how many of the ingredient they use are hydrocolloids, and so they never learn how to utilize them efficiently. Hydrocolloids are ingredients that control water in a recipe, binding with liquids to form gels or sols, colloidal suspensions.