Direct observation of nanoparticle adsorption to the water-oil interface captures early attachment and jamming.
Significance and Impact
Understanding how nanoparticles assemble and jam to stabilize liquid-liquid interfaces has many industrial applications and aides in the design of reconfigurable liquid in liquid fluidic systems.
- Used in situ AFM and Laser Scanning Confocal Microscopy to directly observe nanoparticle adsorption events and the spatial distribution and relaxation of nanoparticles at the interface.
- Nanoparticles follow Fickian diffusive kinetics when adsorbing to a bare water-oil interface.
- Attachment to dense films requires coordinated rearrangement of nanoparticles in the interface and slows the relaxation dynamics.