Noncontact Measurement of Viscosity of B2O3 Melt Using Electric-field Tweezers

We propose a novel noncontact method for measuring the viscosity of high-temperature glass melt using a small amount of sample. This method combines the electric-field tweezers system developed for measuring the local and dynamic surface properties of soft condensed materials and the hot-thermocouple technique for in situ observation and measurement of high-temperature liquids. The viscosity of B2O3 melt was measured in the temperature range of 873 to 1473 K. The temperature dependence of the viscosity presented in this work is in reasonable agreement with that reported in the references.