Evaporation of droplet in mid-air: Pure and binary droplets in single-axis acoustic levitator

PloS One
Yuki Niimura, Koji Hasegawa

Abstract

Acoustic levitation method (ALM) is a container-less processing method with applications in various fields, including material processing, biology, and analytical chemistry. Because it is a container-less processing technique, ALM could prevent nucleation and contamination of materials being processed via contact with a container wall. It is well-known that evaporation of a sample is an important process in container-less processing of materials; however, the mechanism of evaporation in multicomponent droplets in a single acoustic levitator is still unclear. Thus, we evaluate and understand the evaporation of an acoustically levitated multicomponent droplet and manipulate the evaporation process of the sample in this study. Specifically, we investigate the evaporation process of pure and multicomponent droplets using container-less processing experimentally. The evaporation processes and temporal evolution of the surface temperature of a multicomponent droplet were evaluated using a high-speed camera and radiation thermometer, respectively. We used water, ethanol, methanol, hexane, acetone, pentane, and binary solutions (solution of 25 wt%, 50 wt%, and 75 wt% ethanol, methanol, and acetone, respectively) as test samples to stud...Continue Reading

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Citations

Apr 1, 2020·Micromachines·Koji HasegawaYutaka Abe
Oct 23, 2019·Scientific Reports·Miguel A Quetzeri-SantiagoJ Rafael Castrejón-Pita
May 5, 2021·Soft Matter·Lankipalli HarshaDipankar Bandyopadhyay

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