摘要
When δPFlow exceeds the maximum δPLaplace, the organic phase ows toward the aqueous phase (Figure 17.6b). When δPFlow is lower than the minimum δPLaplace, the aqueous phase ows toward the organic phase (Figure 17.6c). When the ow rate ratio is changed, the pressure balance is maintained by changing the position of the liquid-liquid interface. is model indicates that the important parameters for microuid control are the interfacial tension, the dynamic contact angle, and the depth of the microchannel. is model can also be applied to gas-liquid microows.