In-situ observation of convection in droplet under microwave radiation by PIV

Masahiro Asada; Yushin Kanazawa; Yusuke Asakuma; Itsuro Honda; Chi Phan; Harisinh Parmar; Vishnu Pareek; Geoffrey Evans

doi:10.1117/12.2063436

6 August 2014 In-situ observation of convection in droplet under microwave radiation by PIV

Masahiro Asada, Yushin Kanazawa, Yusuke Asakuma, Itsuro Honda, Chi Phan, Harisinh Parmar, Vishnu Pareek, Geoffrey Evans

Proceedings Volume 9232, International Conference on Optical Particle Characterization (OPC 2014); 92320F (2014) https://doi.org/10.1117/12.2063436
Event: International Conference on Optical Particle Characterization (OPC 2014), 2014, Tokyo, Japan

Abstract

In this study, microwave irradiation is applied to a liquid droplet and the surface tension, the circulation flow and temperature of water droplet are measured dynamically under the irradiation. The droplet was allowed to return to its original temperature after the irradiation, it was found that water surface tension remained well below its original value for an extended period of time. Surface tension reduction shown similar effect of ”impurity“ at molecular level during the microwave, and some “memory” after microwave, which might be caused by nano-bubble. On the other hand, microwave can introduce the circulation flow of higher rotation speed and will be expected to be applied for non-contact stirring method.

Citation Download Citation

Masahiro Asada, Yushin Kanazawa, Yusuke Asakuma, Itsuro Honda, Chi Phan, Harisinh Parmar, Vishnu Pareek, and Geoffrey Evans "In-situ observation of convection in droplet under microwave radiation by PIV", Proc. SPIE 9232, International Conference on Optical Particle Characterization (OPC 2014), 92320F (6 August 2014); https://doi.org/10.1117/12.2063436

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