Inner Rotation of Pickering Janus Emulsions

Nanomaterials

Rajarshi Roy Raju¹  Joachim Koetz¹ 

[1] Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany;

关键词: Janus droplets;    Pickering emulsions;    magnetic manipulation;    gold nanoparticles;    magnetite nanoparticles;   

DOI  :  10.3390/nano11123312

来源: DOAJ

【 摘 要 】

Janus droplets were prepared by vortex mixing of three non-mixable liquids, i.e., olive oil, silicone oil and water, in the presence of gold nanoparticles (AuNPs) in the aqueous phase and magnetite nanoparticles (MNPs) in the olive oil. The resulting Pickering emulsions were stabilized by a red-colored AuNP layer at the olive oil/water interface and MNPs at the oil/oil interface. The core–shell droplets can be stimulated by an external magnetic field. Surprisingly, an inner rotation of the silicon droplet is observed when MNPs are fixed at the inner silicon droplet interface. This is the first example of a controlled movement of the inner parts of complex double emulsions by magnetic manipulation via interfacially confined magnetic nanoparticles.

【 授权许可】

Unknown