Skip to main content
. 2015 Jul 24;10(7):e0132609. doi: 10.1371/journal.pone.0132609

Fig 2. Four sequential flow modes of CES with the increased positive voltage.

Fig 2

(a) Dripping mode, V 1 = 1.5 kV; (b) Coning mode, V 1 = 3.5 kV; (c) Stable cone-jet mode, V 1 = 5 kV; (d) Multi-jet mode, V 1 = 7 kV. The applied voltages: V 2 = 1.5 kV, V 3 = -5 kV; The outer liquid: 10.0 w% PLGA (Mw = 10,000) in ethyl acetate solution, Q out = 1.0 mL/h; The inner liquid: 4.0 w% curcumin and 1.0 w% PLGA (Mw = 50,000) in acetone solution, Q in = 1.0 mL/h; The vertical distances: h = 0.1 mm, H 1 = 2.5 mm, H 2 = 20 mm, H 3 = 100 mm.