The Holy Grail of Nanowire Production (IMAGE) Ecole Polytechnique Fédérale de Lausanne Caption Two different configurations of the droplet within the opening -- hole fully filled and partially filled and bellow illustration of GaAs crystals forming a full ring or a step underneath the large and small gallium droplets. Credit EPFL 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.