Comment on "patterns in drying drops dictated by curvature-driven particle transport"
© 2019 American Chemical Society. In a recent article, Mondal et al. (Mondal, R.; Semwal, S.; Kumar, P. L.; Thampi, S. P.; Basavaraj, M. G. Langmuir 2018, 34, 11473-11483) demonstrated different patterns (coffee-rings and coffee-eyes) in dry deposits from solutions of concentrated well-stabilized na...
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th-cmuir.6653943832-666262019-09-16T12:59:52Z Comment on "patterns in drying drops dictated by curvature-driven particle transport" Chris S. Hodges S. Mick Tangparitkul Chemistry Materials Science Physics and Astronomy © 2019 American Chemical Society. In a recent article, Mondal et al. (Mondal, R.; Semwal, S.; Kumar, P. L.; Thampi, S. P.; Basavaraj, M. G. Langmuir 2018, 34, 11473-11483) demonstrated different patterns (coffee-rings and coffee-eyes) in dry deposits from solutions of concentrated well-stabilized nanofluids. Coffee rings created from dried sessile droplets result mainly from internal radial flow as proposed by Deegan et al. (Deegan, R. D.; Bakajin, O.; Dupont, T. F.; Huber, G.; Nagel, S. R.; Witten, T. A. Nature 1997, 389, 827-829). To generate coffee-eyes from pendent droplets, Mondal et al. have proposed a new particle transport route involving particle adsorption at the interface and its consequent curvature-driven settling along the interface due to gravity acting on the droplet. In this comment, we demonstrate that coffee-eyes can also be formed from pendent droplets by increasing the nanoparticle size to destabilize the colloidal liquid, causing nanoparticle accumulation at the water droplet apex without particle adsorption at the interface. 2019-09-16T12:49:26Z 2019-09-16T12:49:26Z 2019-07-30 Journal 15205827 07437463 2-s2.0-85070563303 10.1021/acs.langmuir.9b01442 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85070563303&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/66626 |
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Chemistry Materials Science Physics and Astronomy Chris S. Hodges S. Mick Tangparitkul Comment on "patterns in drying drops dictated by curvature-driven particle transport" |
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© 2019 American Chemical Society. In a recent article, Mondal et al. (Mondal, R.; Semwal, S.; Kumar, P. L.; Thampi, S. P.; Basavaraj, M. G. Langmuir 2018, 34, 11473-11483) demonstrated different patterns (coffee-rings and coffee-eyes) in dry deposits from solutions of concentrated well-stabilized nanofluids. Coffee rings created from dried sessile droplets result mainly from internal radial flow as proposed by Deegan et al. (Deegan, R. D.; Bakajin, O.; Dupont, T. F.; Huber, G.; Nagel, S. R.; Witten, T. A. Nature 1997, 389, 827-829). To generate coffee-eyes from pendent droplets, Mondal et al. have proposed a new particle transport route involving particle adsorption at the interface and its consequent curvature-driven settling along the interface due to gravity acting on the droplet. In this comment, we demonstrate that coffee-eyes can also be formed from pendent droplets by increasing the nanoparticle size to destabilize the colloidal liquid, causing nanoparticle accumulation at the water droplet apex without particle adsorption at the interface. |
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Chris S. Hodges S. Mick Tangparitkul |
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Chris S. Hodges S. Mick Tangparitkul |
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Chris S. Hodges |
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Comment on "patterns in drying drops dictated by curvature-driven particle transport" |
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Comment on "patterns in drying drops dictated by curvature-driven particle transport" |
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Comment on "patterns in drying drops dictated by curvature-driven particle transport" |
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Comment on "patterns in drying drops dictated by curvature-driven particle transport" |
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Comment on "patterns in drying drops dictated by curvature-driven particle transport" |
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comment on "patterns in drying drops dictated by curvature-driven particle transport" |
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2019 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85070563303&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/66626 |
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