Simon Skovsgård, Aarhus University (IMAGE) Aarhus University Caption Ultra-high molecular weight polyethylene is already taking over from the para-aramid fibrous material, Kevlar, in e.g. bullet-proof jackets, which PhD Simon Skovsgård is wearing here. Credit Lars Kruse / AU Foto Usage Restrictions May only be used with appropriate credit. 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.