But you should know that we can also build larger liposomes if we use other techniques. So let's suppose we have an aqueous solution and then we have a second solution that contains the phospholipid that we want to use to actually create that bilayer membrane. So what we do is we basically mix these two solutions and because the phospholipids won't mix very well in the aqueous solution, we basically form these two separate layers. So we have the Aqueous layer and we have that phospholipid layer. Now, to actually allow these phospholipids to spontaneously form these vesicles, these liposomes, what we have to do is we have to disperse these phospholipids within the aqueous solution. And in order to disperse these phospholipids, what we do is we basically undergo a process known as sonication.