Droplet Assembly Method

A process for moving a droplet from a first location to a second location, which process comprises:

• (i) exposing a droplet which is situated at a first location, which droplet comprises (a) an aqueous medium, (b) an outer layer of amphipathic molecules on at least part of the surface of the aqueous medium, and (c) a magnetic material disposed in the aqueous medium, to a magnetic field of a magnet, and thereby causing the droplet to be attracted to said magnet by magnetic attraction;
• (ii) moving the magnet relative to the first location whilst maintaining said magnetic attraction, and thereby causing the droplet to move away from said first location and towards a second location;
• and
• (iii) disposing the droplet at said second location,
• wherein:
• the droplet at the first location forms a bilayer with a further droplet, wherein the further droplet comprises (a) an aqueous medium and (b) an outer layer of amphipathic molecules around the surface of the aqueous medium, and wherein exposing the droplet at the first location to said magnetic field causes the droplet at the first location to move away from the further droplet and the bilayer between the droplet at the first location and the further droplet to separate.