Cover Picture: Synthesis of Composite Emulsions and Complex Foams with the use of Microfluidic Flow‐Focusing Devices (Small 10/2007)

The cover picture shows composite lattices of bubbles and droplets self-assembled in a microfluidic channel. Simultaneous use of multiple and coupled microfluidic flow-focusing generators make it possible to generate these heterogeneous ordered structures. Such microfluidic systems allow control over the size and stoichiometry of bubbles and droplets of different size and composition. For more information, please read the Full Paper “Synthesis of Composite Emulsions and Complex Foams with the use of Microfluidic Flow-Focusing Devices” by G. M. Whitesides and co-workers beginning on page 1792.