A team from the Consejo Superior de Investigaciones Científicas (CSIC) has devised a method to place proteins in order in a macroscopic area of several square feet, with an accuracy of 10 nanometres. The method, which has been displayed on the cover of the latest issue of the journal Advanced Materials, is highly reproducible and is of low cost. The innovation could lead to the development of smart drugs, or in the field of information technology, to the production of new systems for storing large amounts of information.