Fluidics sheath fluid

Fig. 3.2. The fluidics system, with air pressure pushing both the sample (with suspended cells) and the sheath fluid into the flow cell.

Fig. 1 Multiple-capillary instrument employing the sheath-flow technique. Key 14, capillary 18, capillary outlet 20, capillary inlet 22, buffer well 24, microtiter plate 26, quartz chamber 36, laser 38, laser beam 40, lens 58, fluidic stream. The electrodes are not shown nor is the device for delivering the sheath fluid. (Reprinted in part from U.S. Patent No. 5,741,412, Figure 1.)...

Structure, channel surface, and fluidic property, which could affect the focusing process. In this respect, Lee et al. [99] proposed a similar model in which the effect of the density of the different fluids is taken into account. Moreover, Wu and Nguyen [100] presented a more complex method that considered the effect of the different viscosities of the sample stream and sheath streams. 

The segmented flow condition may be created by several contrasting microreactor geometry configurations, including (i) simple T-junction, (ii) constriction junction, (iii) sheath flow junction, and (iv) fluidic oscillator arrangements [155]. The precision of fluid volume elution controlled by these means depends on several factors. 

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