| 초록 |
Interfacial tension is an essential physico-chemical property between two immiscible fluids to determine their stability and flow dynamics. Measuring the interfacial tension is, therefore, a delicate task because the apparatus or probes employed should not disturb the liquid-liquid interface. Accurate measurement of dynamic interfacial tension is also necessary to study the transient behaviors of liquid interfaces such as the adsorption of surface active components, surfactants, salts, and nanoparticles. Since the interfacial tension force becomes more dominant at microscale when compared to gravitational and inertial forces, microfluidic platforms give particular advantages for measuring the interfacial tension precisely. In this presentation, I demonstrate a temperature controllable microfluidic tensiometer to measure transient interfacial tension between two immiscible liquids by coupling thermo-control features with the droplet microfluidic platform. |
