Microflowers (IMAGE) Vienna University of Technology Caption "Microflowers" are made of PPPI, the world's most mechanically stable organic polymer. The blossoms are approximately five microns wide. Credit TU Vienna Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.