Structured Liquids with pH-Triggered Reconfigurability.

Through pH-tuning of electrostatic inter actions between polymer ligands and nano particles at structured-liquid interfaces, liquid droplets can be directed between a jammed nonequilibrium state and a dynamic reconfigurable state. The nanoparticle-surfactant dynamics highly depend on the pH, so that the liquids can be structured using an external field and under variation of pH, or alternatively being realized by remote photo-triggering.