Figure 18.

(a) Transmittance% spectrum recorded for an n-dodecane-in-50.5% aqueous sucrose-in-n-dodecane Pickering double emulsion. (Inset) Digital photograph illustrates the highly transparent nature of this refractive-index-matched emulsion. (b) Fluorescence micrograph recorded for the same Pickering double emulsion prepared with Nile Red dye dissolved in the oil phase. (c) Optical micrograph obtained for the same emulsion prepared in the absence of any sucrose (i.e., with pure water) in order to provide contrast. Reproduced from ref (191) (copyright 2016 Royal Society of Chemistry).