Coaxial double-capillary

The pendant drop experiments are a very new experimental technique to study penetration systems. The insoluble monolayer is spread onto the drop surface carefully by using a microsyringe [221]. The exchange of the drop bulk phase can be easily performed by using a coaxial double-capillary as shown in Fig. 4.20. 

Figure 9.5 (a) The coaxial double-capillary tip arrangement used in electrospinning core-shell nanofibers. Reprinted with permission from Sun et al. (2003). Copyright 2003. John Wiley Sons, (b) A coaxial tip design used by Larsen et al. (2003) for olive oil-water (liquid-liquid) coaxial jets. The inset shows the double-layered Taylor s cone. Reprinted with permission from Larsen et al. (2003). Copyright 2003. American Chemical Society. 

Figure 12.12. Exchange of the bulk drop by using a double-syringe system and a coaxial double-capillary (according to Wege et al. (11))...

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