Contact, advancing receding

Angle to the main flow direction Surface coverage Advancing contact angle Dynamic contact angle Receding contact angle Density Eluid density Residual... 

Compound Type of multilayer Contact angle advancing (receding)... 

Figure 6. Effect of duration of urethanation with 10% HMD1 in toluene on the contact angles of EVAL films grafted with dextran for 4 min at a polymer concentration of 10 wt%. Key O, advancing , receding.

Water content 7 h2o/T hjO Contact angle (advancing/receding) [deg]... 

R. Tadmor, Line Energy and the Relation between Advancing, Receding, and Young Contact Angles, Langmuir, 2004, 20, 7659-7664. 

R. Tadmor, "Line energy and the relation between advancing, receding, and Young contact angles," Langmuir, vol. 20, pp. 7659-7664, 2004. 

E. Chibowski, On some relations between advancing, receding and Youngs contact angles, Adv. Colloid Interface Sci. 133, 51-59 (2007). 

Figure 7.10. Water contact angles on a tetrafluoroethylene (TFE)-methanol telomer wax surface as a function of roughness O, advancing contact angles , receding contact angles (from ref. (30)), reproduced with permission from American Chemical Society...

Values of advancing receding 0r, and static 0q contact angles measured for sessile droplets on a methylated quartz plate in dependence on surfactant concentration [22] are shown in Fig. 19. To determine 0a und 0r, the drop was disposed on a polished surface of a flat cut of a thick-walled quartz capillary over its orifice. For solution concentration Cq< 0.1%, advancing angles are higher than 90° and, therefore, the capillary suction is formally impossible. However, as is shown in Fig. 18, a slow penetration of low concentrated solutions takes place. Similar results were obtained in other experiments with... 

Figure 5 Advancing and receding contact angle for PAS (o) advancing contact angle ( ) receding contact angle. Standard deviations are shown.

Experimentally, a small droplet of water was dispensed to the center of the textured area. The diameter of the contact area D was recorded and the advancing/receding contact angles Oa Or were determined. Small amount of water was added next. The diameter of the expanded drop and Oa/Or of the drop were determined. This procedure is repeated for other samples, and the data are summarized in Table 4.1. 

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