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A Study on Particle Deposition of an Evaporating Colloidal Droplet

콜로이드 액적의 증발에 의한 입자 증착에 관한 연구

  • 위상권 (삼성종합기술원 Micro Systems Lab.) ;
  • 이정용 (삼성종합기술원 Micro Systems Lab.)
  • Published : 2006.07.01

Abstract

The presented study aims to investigate the colloidal droplet deposition caused by evaporation of the liquid. In the numerical analysis, the evaporation is carried out by using different evaporation function intended to obtain different shape of solute deposition. In the experiment, the colloidal droplets of different solvents are placed on a glass plate and the surface profiles are measured after drying the solvents of the droplets to investigate the effect of the solvent evaporation on the final deposition profile. Comparing the surface profiles obtained under different conditions, the optimum drying conditions of colloidal droplets are, determined to obtain uniform surface profiles. The numerical results showed that ring-shaped deposition of solute was formed at the edge of the droplet due to the coffee stain effect and the height of the ring was reduced at the lower evaporation rate. The experiments showed that the boiling point of a solvent was critical to the surface uniformity of the deposition profile and the mixture of solvents with different boiling points influenced the uniformity as well.

Keywords

References

  1. Deegan, R. D., Bakajin, O., Dupont, T. F., Huber, G. Nagel, S. and Witten, T. A., 1997, 'Capillary Flow as the Cause of Ring Stains from Dried Liquid Drops,' Nature, Vol. 389, No. 23, pp. 827-829 https://doi.org/10.1038/39827
  2. Deegan, R. D., Bakajin, O., Dupont, T. F., Huber, G, Nagel, S. R. and Wittan, T. A., 2000, 'Contact Line Deposits in an Evaporating Drop,' Physical Review E, Vol. 62, No.1, pp. 756-765 https://doi.org/10.1103/PhysRevE.62.756
  3. Yamaguchi, K., Sakai, K., Yamanaka, T. and Hirayama, T., 2000, 'Generation of Three-dimensional Micro Structure Using Metal Jet,' Precision Engineering, Vol. 24, pp. 2-8 https://doi.org/10.1016/S0141-6359(99)00015-X
  4. Wang, J. Z., Zheng, Z. H., Li, H. W., Huck, W. T. S. and Sirringhaus, H., 2004, 'Dewetting of Conducting Polymer Inkjet Droplets on Patterned Surface,' Nature Vol. 3, pp. 171-176 https://doi.org/10.1038/nmat1073
  5. Tekin, E., de Gans, B. J. and Schubert, U. S., 2004, 'Ink-jet Printing of Polymer - from Single Dots to Thin Film Libraries,' Journal of Materials Chemistry, Vol. 14, pp. 2627-2632 https://doi.org/10.1039/b407478e
  6. de Gans, B. J., Duinveld, P. C. and Schubert, U. S., 2004, 'Inkjet Printing of Polymers: State ofthe Art and Future Developments,' Advanced Materials, Vol. 16, No. 3, pp. 203-213 https://doi.org/10.1002/adma.200300385
  7. Cooley, P., Wallace, D. and Antohe, B., 2004, 'Applications of Ink-Jet Printing Technology to BioMEMS and Microfluidic Systems,' Journal of the Association for Laboratory Automation, Vol. 7, No. 5, pp.33-39 https://doi.org/10.1016/S1535-5535(04)00214-X
  8. Hu, H. and Larson, R. G., 2005, 'Analysis of the Effects of Marangoni Stresses on the Microflow in an Evaporating Sessile Droplet,' Langmuir, Vol. 21, pp. 3963-3971 https://doi.org/10.1021/la0475270
  9. Deegan, R. D., 2000, 'Pattern Formation in Drying Drops,' Physical Review E., Vol. 61, No. 1, pp. 475-485 https://doi.org/10.1103/PhysRevE.61.475
  10. Fischer, B. J., 2002, 'Particle Convection in an Evaporating Colloidal Droplet,' Langmuir, Vol.18, pp. 60-67 https://doi.org/10.1021/la015518a
  11. Ruiz, O. E. and Black, W. Z., 2002, 'Evaporation of Water Droplets Placed on a Heated Horizontal Surface,' ASME Journal of Heat Transfer, Vol.124, pp. 854-863 https://doi.org/10.1115/1.1494092
  12. Burelbach, J. P., Bankoff, S. G. and Davis, S. H., 1988, 'Nonlinear Stability of Evaporating/Condensing Liquid Films,' Journal of Fluid Mechanics, Vol.195, pp. 463-494 https://doi.org/10.1017/S0022112088002484