Digital Microfluidic High-Throughput Printing of Single Metal-Organic Framework Crystals

The first microfluidic method for accurately depositing monodisperse single MOF crystals is presented, enabling unprecedented high‐throughput, yet flexible single‐crystal printing. Individual droplets of MOF precursor solutions are actuated over a matrix of hydrophilic‐in‐hydrophobic micropatterns for the controlled generation of femtoliter droplets. As such, thousands of monodisperse single MOF crystals are printed per second in a desired pattern, without the use of impractically expensive equipment.