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Anomalous potentials from inverse analyses of interfacial polydisperse attractive colloidal fluids

J. Chem. Phys. 124, 054712 (2006); doi:10.1063/1.2162536

Published 3 February 2006

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Todd O. Pangburn and Michael A. Bevan
Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122
This paper investigates effects of using monodisperse inverse analyses to extract particle-particle and particle-surface potentials from simulated interfacial colloidal fluids of polydisperse attractive particles. Effects of polydispersity are investigated as functions of particle concentration and attractive well depth and range for van der Waals and depletion potentials. Forward Monte Carlo simulations are used to generate particle distribution functions for polydisperse interfacial colloidal fluids from which inverted potentials are obtained using an inverse Ornstein-Zernike analysis and an inverse Monte Carlo simulation method. Attractive potentials are successfully recovered for monodisperse colloidal fluids, but polydispersity that is unaccounted for in inverse analyses produces (1) apparent softening of strong forces, (2) anomalous repulsive and attractive interactions, and (3) aphysical particle overlaps. This investigation provides insights into the role of polydispersity in altering the equilibrium structure and corresponding inverted potentials of attractive colloidal fluids near surfaces. These findings should assist the design and interpretation of optical microscopy experiments involving interfacial colloidal fluids similar to the simulated experiments reported here. ©2006 American Institute of Physics
History: Received 17 October 2005; accepted 5 December 2005; published 3 February 2006
Permalink: http://link.aip.org/link/?JCPSA6/124/054712/1
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0021-9606 (print)   1089-7690 (online)
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REFERENCES (34)
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  1. A. P. Gast and W. B. Russel, Phys. Today 51 (12), 24 (1998).
  2. J. W. Goodwin, J. Hearn, C. C. Ho, and R. H. Ottewill, Colloid Polym. Sci. 252, 464 (1974).
  3. W. Stober, A. Fink, and E. Bohn, Science 26, 62 (1968).
  4. P. G. Bolhuis and D. A. Kofke, Phys. Rev. E 54, 634 (1996);
    5. D. A. Kofke and P. G. Bolhuis, ibid. 59, 618 (1999);
    S.-E. Phan, W. B. Russel, J. Zhu, and P. M. Chaikin, J. Chem. Phys. 108, 9789 (1998);
    S. Pronk and D. Frenkel, ibid. 120, 6764 (2004).
  5. D. Frenkel, R. J. Vos, C. G. d. Kruif, and A. Vrij, J. Chem. Phys. 84, 4625 (1986);
    6. D. A. Kofke and E. D. Glandt, ibid. 90, 439 (1989);
    N. B. Wilding, M. Fasolo, and P. Sollich, ibid. 121, 6887 (2004).
  6. F. Lado, J. Chem. Phys. 108, 6441 (1998).
  7. D. Frydel and S. A. Rice, Phys. Rev. E 71, 041403 (2005);
    8. B. Cui, B. Lin, D. Frydel, and S. A. Rice, ibid. 72, 021402 (2005).
  8. G. M. Kepler and S. Fraden, Langmuir 10, 2501 (1994);
    9. K. Vondermassen, J. Bongers, A. Mueller, and H. Versmold, ibid. 10, 1351 (1994);
    M. D. Carbajal-Tinoco, F. Castro-Roman, and J. L. Arauza-Lara, Phys. Rev. E 53, 7345 (1996);
    S. H. Behrens and D. G. Grier, ibid. 64, R050401 (2001).
  9. R. Klein, H. H. von Grunberg, C. Bechinger, M. Brunner, and V. Lobaskin, J. Phys.: Condens. Matter 14, 7631 (2002).
  10. Y. Han and D. G. Grier, Phys. Rev. Lett. 91, 038302 (2003).
  11. B. V. Derjaguin and L. Landau, Acta Physicochim. URSS14, 633 (1941);
    12. E. J. W. Verwey and J. T. G. Overbeek, Theory of the Stability of Lyophobic Colloids (Elsevier, Amsterdam, 1948).
  12. J. P. Hansen and I. R. McDonald, Theory of Simple Liquids (Academic, London, 1986).
  13. M. P. Allen and D. J. Tildesley, Computer Simulation of Liquids (Oxford Science, New York, 1987).
  14. C. P. Royall, M. E. Leunissen, and A. V. Blaaderen, J. Phys.: Condens. Matter 15, S3581 (2003).
  15. J. Baumgartl and C. Bechinger, Europhys. Lett. 71, 487 (2005).
  16. H.-J. Wu, T. O. Pangburn, R. E. Beckham, and M. A. Bevan, Langmuir 21, 9879 (2005).
  17. T. O. Pangburn and M. A. Bevan, J. Chem. Phys. 123, 174904 (2005).
  18. B. Cui, B. Lin, and S. A. Rice, J. Chem. Phys. 119, 2386 (2003).
  19. K. A. Dawson, Curr. Opin. Colloid Interface Sci. 7, 218 (2002).
  20. E. M. Lifshitz, Sov. Phys. JETP 29, 94 (1955);
    21. I. E. Dzaloshinskii, E. M. Lifshitz, and L. P. Pitaerskii, Adv. Phys. 10, 165 (1961).
  21. S. Asakura and F. Oosawa, J. Chem. Phys. 22, 1255 (1954).
  22. M. A. Bevan and D. C. Prieve, Langmuir 15, 7925 (1999).
  23. B. A. Pailthorpe and W. B. Russel, J. Colloid Interface Sci. 89, 563 (1982).
  24. W. B. Russel, D. A. Saville, and W. R. Schowalter, Colloidal Dispersions (Cambridge University Press, New York, 1989).
  25. A. Vrij, Pure Appl. Chem. 48, 471 (1976).
  26. D. L. Sober and J. Y. Walz, Langmuir 11, 2352 (1995).
  27. D. C. Prieve, Adv. Colloid Interface Sci. 82, 93 (1999).
  28. F. Lado, J. Chem. Phys. 47, 4828 (1967);
    29. 49, 3092 (1968);
    J. Comput. Phys. 8, 417 (1971).
  29. A. K. Soper, Chem. Phys. 202, 295 (1996).
  30. C. G. Gray and K. E. Gubbins, Theory of Molecular Fluids (Oxford University Press, Oxford, 1984).
  31. M. G. Noro, N. Kern, and D. Frenkel, Europhys. Lett. 48, 332 (1999).
  32. G. M. Kepler and S. Fraden, Phys. Rev. Lett. 73, 356 (1994).
  33. H. J. Wu and M. A. Bevan, Langmuir 21, 1244 (2005).
  34. M. Lu, M. A. Bevan, and D. M. Ford, J. Chem. Phys. 122, 224710 (2005).

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