title: Fiber optic Fabry-Perot sensor for surface tension analysis.
abstract: We demonstrate a new technique for analyzing surface tension of liquids. This is done upon examining the interference signals reflected from a remnant drop pending at the cleaved end of a single mode optical fiber. The resulting interference patterns are fitted to a multimirror Fabry-Perot model yielding information of the drop size. We show that the wetting process of the fiber plays an important role in drop formation; in particular, the drop size can be correlated to the surface tension of the liquid sample. The proposed configuration may render useful for liquids analysis using small sample volume.
authors.forename: Violeta A
authors.initials: VA
authors.lastname: Márquez-Cruz
authors.forename: Juan A
authors.initials: JA
authors.lastname: Hernández-Cordero
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007368:Interferometry / Q000295:instrumentation*; D007909:Lenses; D008422:Materials Testing / Q000295:instrumentation*; D012996:Solutions / Q000032:analysis* / Q000737:chemistry*; D013500:Surface Tension
chemical_list: D012996:Solutions