A British team reports a double inversion of a nanoparticle-containing emulsion: By the successive addition of a surfactant, they were able to convert an oil-in-water emulsion into a water-in-oil ...

Figure 1: Dispersed systems prepared from fluid mixtures and colloidal particles. Figure 2: Transitional inversion of the curvature of air–water surfaces with respect to particle hydrophobicity.

(Nanowerk News) Oil and water are not miscible. However, it is possible to combine both into an emulsion in which they act as a unit—for example, in creams, body lotion, milk, or mayonnaise. In these ...