Abstract
Surface tension of fluids is an important factor controlling multiphase systems and is often manipulated by surfactants during industrial processes. Previously, we have found that water surface tension was reduced under continuous microwave irradiation. The reduction was not explainable by thermal effects. The new insights can lead to important application of microwaves in multiple-phase systems. In this study, effect of various microwave irradiation modes on surface tension of water was investigated. The surface tension reduction was confirmed for pulsed microwave irradiation. The reduction varied with the applied power as well as interval between irradiations. The droplet oscillation and internal convection were also investigated during and after microwave irradiation to clarify the mechanism. It was found that the convection within the water droplet was proportional to the microwave power. In contrast, the frequency of oscillation was independent on the microwave power. These results on surface tension, oscillation and convection will provide important insights for designing microwave applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
