Martinez molecules (IMAGE) Purdue University Caption A coating of fluorinated molecules is coated onto breathable and waterproof smart clothes to repel stains and withstand cleaning in conventional washing machines. Purdue University engineers have developed a method to transform existing cloth items into battery-free wearables resistant to laundry. Credit (Purdue University photo/Rebecca McElhoe) 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.