Nanoparticle Films, with Cracks and without (image) University of Pennsylvania Share Print E-Mail Caption Nanoparticle films crack at certain thicknesses (left). By stacking layers of thinner films, a final product with the desired thickness can be achieved without cracking (right). Credit Nano Letters Usage Restrictions With credit. Share Print E-Mail 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.