Mesoporous silica hemispheres (in blue) were sprinkled with NaCl crystals (grey) electrochemically at the water-oil interface. Images were obtained by CNRS-Université de Lorraine.
<a href="//commons.wikimedia.org/w/index.php?title=User:Lukaspoltorak&amp;action=edit&amp;redlink=1" class="new" title="User:Lukaspoltorak (page does not exist)">Łukasz Półtorak, Grégoire Herzog and Alain Walcarius</a> from LCPME, CNRS-Université de Lorraine.
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>