Capillary Rise in Tubes Jurins Law

FIGURE 2.15. Fabrication of an AFM tip, by partially immersing a fiber in an etching solution. 

FIGURE 2.16. Glass fiber placed at the interface between hydrofluoric acid and oil. After a few minutes, a tip forms where the meniscus used to be. (From Meniscus Shape on Small Diameter Fibers, by K. M. Takahashi. In Journal of Colloid and Interface Science, 134i p. 181 (1990), 2001 by Academic Press. Reproduced by permission.) 

---