Simple process makes good use of bubbles and closing tags for paragraphs.
Mohan Srinivasarao of the Georgia Institute of Technology found a way to create an orderly pattern of air bubbles throughout a polymer film using a simple solvent. By controlling the polymer, solvent, humidity and flow of air across the polymer, he triggers the condensation of tiny uniform water droplets. The droplets sink into the polymer film. The process repeats itself on its own until the film is filled with a three dimensional array of water bubbles. When the solvent and water evaporate, they leave behind a polymer scaffold with a lattice of equal-sized air bubbles.