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Applied Optics

Applied Optics


  • Vol. 44, Iss. 6 — Feb. 20, 2005
  • pp: 912–915

Optically monitored dip coating as a contactless viscometry method for liquid films

Alexandre F. Michels, Thiago Menegotto, and Flavio Horowitz  »View Author Affiliations

Applied Optics, Vol. 44, Issue 6, pp. 912-915 (2005)

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Real-time interferometric monitoring of the dip coating process is applied to the study of properties of flowing liquids. Nonvolatile Newtonian oils are considered, allowing validity of a simple model after the steady state is reached where film physical thickness depends on time as t−1/2. Measurement of two distinct mineral oil standards, under several withdrawing speeds, resulted in kinematic viscosities of 1.17 ± 0.03 and 9.9 ± 0.2 S (1S = 1 cm2/s). Agreement of these results with nominal values from the manufacturer suggests that interferometric monitoring of dip coating may become a valuable method for accurate, contactless viscometry of liquid films. Advantages and present limitations are discussed.

© 2005 Optical Society of America

OCIS Codes
(260.3160) Physical optics : Interference
(310.3840) Thin films : Materials and process characterization
(310.6860) Thin films : Thin films, optical properties

Original Manuscript: April 23, 2004
Revised Manuscript: September 29, 2004
Manuscript Accepted: October 13, 2004
Published: February 20, 2005

Alexandre F. Michels, Thiago Menegotto, and Flavio Horowitz, "Optically monitored dip coating as a contactless viscometry method for liquid films," Appl. Opt. 44, 912-915 (2005)

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  1. F. Horowitz, E. M. Yeatman, E. Dawnay, A. Fardad, “Optics as a key to spin coating sol-gel films,” in 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, G. Akos, T. Lippenyi, G. Lupkovics, A. Podmaniczky, eds., Proc. SPIE1983, 1022–1023 (1993).
  2. F. Horowitz, E. M. Yeatman, E. Dawnay, A. Fardad, M. Green, “Real-time optical monitoring of spin coating,” J. Phys. III (France) 3, 2059–2063 (1993). [CrossRef]
  3. D. E. Haas, “Effect of solvent evaporation rate on skin formation during spin coating of complex solutions,” in Sol-Gel Optics V, B. Dunn, E. Pope, H. K. Schmidt, M. Yamane, eds., Proc. SPIE3943, 280–284 (2000). [CrossRef]
  4. A. F. Michels, F. Horowitz, “Optics interferometric applications to fluid viscometry,” in 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Application, V. L. Brudny, S. A. Ledesma, M. C. Marconi, eds., Proc. SPIE4419, 252–255 (2001). [CrossRef]
  5. F. Nishida, J. M. McKiernan, B. Dunn, J. I. Zink, C. J. Brinker, A. J. Hurd, “In situ fluorescence probing of the chemical changes during sol-gel thin film formation,” J. Am. Ceram. Soc. 78, 1640–1648 (1995). [CrossRef]
  6. D. Qu, E. Rancé, S. Garoff, “Dip coated films of volatile liquids,” Phys. Fluids 14, 1154–1156 (2002). [CrossRef]
  7. F. Horowitz, A. F. Michels, P. Alcantara, M. B. Pereira, A. P. Rizzato, C. V. Santilli, “Real-time interferometric monitoring of dip coating,” in 18th Congress of the International Commission for Optics, A. J. Glass, J. W. Goodman, M. Chang, A. H. Guenter, T. Asakura, eds., Proc. SPIE3749, 729–730 (1999). [CrossRef]
  8. A. F. Michels, T. Menegotto, F. Horowitz, “Interferometric monitoring of dip coating,” Appl. Opt. 43, 820–823 (2004). [CrossRef] [PubMed]
  9. L. D. Landau, B. G. Levich, “Dragging of a liquid by a moving plate,” Acta Physicochim. URSS 17, 42–54 (1942).
  10. V. G. Levich, “Motion and diffusion in thin liquid films,” in Physicochemical Hydrodynamics, N. R. Amundson, ed. (Prentice-Hall, Englewood Cliffs, N.J., 1962), pp. 669–700.
  11. R. P. Spiers, C. V. Subabaraman, W. L. Wilkinson, “Free coating of a Newtonian liquid onto a vertical surface,” Chem. Eng. Sci. 29, 389–396 (1973). [CrossRef]
  12. C. Gutfinger, J. A. Tallmadge, “Films of non-Newtonian fluids adhering to flat plates,” AIChE. J. 11, 403–413 (1965). [CrossRef]
  13. L. E. Scriven, “Physics and applications of dip coating and spin coating,” Mater. Res. Soc. Symp. Proc. 121, 717–729 (1988). [CrossRef]
  14. D. A. White, J. A. Tallmadge, “Theory of drag out of liquids on flat plates,” Chem. Eng. Sci. 20, 33–37 (1965). [CrossRef]

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