Figure 1. Depletion Attraction used for Pickering Emulsion (IMAGE)

The Korea Advanced Institute of Science and Technology (KAIST)

Figure 1. Depletion Attraction used for Pickering Emulsion

Caption

(a) Schematic illustration of particle adsorption to the interface by depletion attraction. (b) Photographs of compared emulsions (0.18?vol% of 1?μm-silica particles) formed with the presence of PEG (10,000?g?mol?1, left) and the absence of PEG (right), taken after several hours from voltex emulsification (?3,000?r.p.m.). Here, φ is the oil fraction of the initial oil-water mixture before emulsifying. Scale bar, 1?cm. (c) Photograph of φ=0.6 emulsion (0.18?vol% silica particles) with oil-soluble fluorescence dyes and its confocal micrograph. Scale bar, 100?μm. (d) Photograph of φ=0.8 high internal phase Pickering emulsion (0.18?vol% silica particles) and its confocal micrographs. Scale bar, 100?μm. (e) Confocal microscope image of fluorescently labelled silica particles (1.08?vol% silica particles) well adsorbed on an oil droplet surface by depletion attraction. Scale bar, 30?μm. All emulsions and HIPPEs (b-e) are produced by the vortexing method.

Credit

KAIST

Usage Restrictions

None

License

Licensed content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.