Contact angle measurements for the air/water/polyethylene and for the oil/water/quartz systems have been carried out over a wide range of drop (bubble) sizes, from \(60 \mu \mathrm{m}\) to \(2 \mathrm{~mm}\). Two distinctly different experimental techniques were used: placement of the drop (bubble)
The effect of drop size on contact angle
โ Scribed by Robert J Good; M.N Koo
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 661 KB
- Volume
- 71
- Category
- Article
- ISSN
- 0021-9797
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Absence of drop size dependence of contact angles of sessile drop systems is sometimes observed in experiments. The contact angle data sometimes fluctuate periodically about a horizontal line. Moreover, in cases where a drop size dependence of contact angles exists, the contact angle data often scat
Different patterns of drop size dependence of contact angles have been observed experimentally. Some investigators reported a decrease of contact angle with an increase in drop size, while others reported an increase. Still others reported that there is no drop size dependence of contact angles. The