期刊
LANGMUIR
卷 32, 期 23, 页码 5812-5820出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.6b00753
关键词
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资金
- International Institute for Carbon Neutral Energy Research [WPI-I2CNER]
- World Premier Research Center Initiative (WPI), MEXT
- Japanese Society for the Promotion of Science (JSPS) KAKENHI [UFG6K18029]
- EPSRC
- Grants-in-Aid for Scientific Research [16K18029] Funding Source: KAKEN
We examine the effects of nanoparticle addition at low concentration on the evaporation kinetics of droplets in the constant radius mode. The evaporative behavior of deionized water and Al2O3 nanoparticle laden water on an aluminum substrate was observed at atmospheric and at different subatmospheric pressures. The two fluids exhibit the same evaporative behavior, independent of the droplet volume or the subatmospheric pressure. Moreover, the linear relationship between evaporation rate and droplet radius, initially proposed by Picknett and Bexon nearly four decades ago for droplets evaporating in the constant radius mode, is satisfied for both liquids. In addition, we have established a unified correlation solely function of fluid properties that extends this relationship to any subatmospheric pressure and fluid tested. We conclude that the addition of a small quantity of nanoparticles to the base fluid does not modify the kinetics of evaporation for pinned volatile droplets.
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