Copyright (c) 2014 AJC
This work is licensed under a Creative Commons Attribution 4.0 International License.
Pattern Formation in Evaporation Coffee Droplets: Influence of Temperature and Salt
Corresponding Author(s) : Changguo Xue
Asian Journal of Chemistry,
Vol. 26 No. 6 (2014): Vol 26 Issue 6
Abstract
In this study, some factors influencing pattern formation in evaporation coffee droplets were investigated, such as temperature, the concentration of coffee and the mass of salt. Polarizing microscope and zoom monocular video microscope were used to investigate the pattern of coffee-ring. The results showed that the edge width of coffee-ring increased as coffee concentration increased. While the edge width of coffee-ring decreased as increased salt concentration. The results indicated that styles of pattern crystals depended on salt concentration.
Keywords
Download Citation
Endnote/Zotero/Mendeley (RIS)BibTeX
- P.J. Yunker, T. Still, M.A. Lohr and A.G. Yodh, Nature, 476, 308 (2011); doi:10.1038/nature10344.
- S.W. Hong, J. Xia, M. Byun, Q. Zou and Z. Lin, Macromolecules, 40, 2831 (2007); doi:10.1021/ma0700734.
- M. Layani, M. Gruchko, O. Milo, I. Balberg, D. Azulay and S. Magdassi, ACS Nano, 3, 3537 (2009); doi:10.1021/nn901239z.
- J.T. Wen, C.-M. Ho and P.B. Lillehoj, Langmuir, 29, 8440 (2013); doi:10.1021/la400224a.
- R.D. Deegan, O. Bakajin, T.F. Dupont, G. Huber, S.R. Nagel and T.A. Witten, Nature, 389, 827 (1997); doi:10.1038/39827.
- D. Kaya, V. A. Belyi and M. Muthukumar, J. Chem. Phys., 133, 114905 (2010); doi:10.1063/1.3493687.
References
P.J. Yunker, T. Still, M.A. Lohr and A.G. Yodh, Nature, 476, 308 (2011); doi:10.1038/nature10344.
S.W. Hong, J. Xia, M. Byun, Q. Zou and Z. Lin, Macromolecules, 40, 2831 (2007); doi:10.1021/ma0700734.
M. Layani, M. Gruchko, O. Milo, I. Balberg, D. Azulay and S. Magdassi, ACS Nano, 3, 3537 (2009); doi:10.1021/nn901239z.
J.T. Wen, C.-M. Ho and P.B. Lillehoj, Langmuir, 29, 8440 (2013); doi:10.1021/la400224a.
R.D. Deegan, O. Bakajin, T.F. Dupont, G. Huber, S.R. Nagel and T.A. Witten, Nature, 389, 827 (1997); doi:10.1038/39827.
D. Kaya, V. A. Belyi and M. Muthukumar, J. Chem. Phys., 133, 114905 (2010); doi:10.1063/1.3493687.