MEASUREMENT OF SURFACE INTERFACIAL TENSION AS A FUNCTION OF TEMPERATURE USING PENDANT DROP IMAGES
Abbreviated Journal Title
Int. J. Optomechatronics
droplet microfluidics; interfacial tension; pefluorocarbon oil; pendant; drop method; thermocapillary; MARANGONI NUMBER; REDUCED GRAVITY; MIGRATION; BUBBLES; Engineering, Electrical & Electronic; Engineering, Mechanical; Optics
Accurate and reliable measurements of surface tension at the interface of immiscible phases are crucial to understanding various physico-chemical reactions taking place between those. Based on the pendant drop method, an optical (graphical)-numerical procedure was developed to determine surface tension and its dependency on the surrounding temperature. For modeling and experimental verification, chemically inert and thermally stable perfluorocarbon (PFC) oil and water was used. Starting with geometrical force balance, governing equations were derived to provide non-dimensional parameters which were later used to extract values for surface tension. Comparative study verified the accuracy and reliability of the proposed method.
International Journal of Optomechatronics
"MEASUREMENT OF SURFACE INTERFACIAL TENSION AS A FUNCTION OF TEMPERATURE USING PENDANT DROP IMAGES" (2011). Faculty Bibliography 2010s. 2134.