Direct imaging of long-range concentration fluctuations in a ternary mixture

The European Physical Journal. E, Soft Matter
Ana OprisanDaniel Beysens

Abstract

We used a direct imaging technique to investigate concentration fluctuations enhanced by thermal fluctuations in a ternary mixture of methanol (Me), cyclohexane (C), and partially deuterated cyclohexane (C*) within 1mK above its consolute critical point. The experimental setup used a low-coherence white-light source and a red filter to visualize fluctuation images. The red-filtered images were analyzed off-line using a differential dynamic microscopy algorithm that allowed us to determine the correlation time, τ, of concentration fluctuations. From τ, we determined the mutual mass diffusion coefficient, D, very near and above the critical point of Me-CC* mixtures. We also numerically estimated both the background and critical contributions to D and compared the results against our experimental values determined from τ. We found that the experimental value of D is close to the prediction based on Stokes-Einstein diffusion law with Kawasaki's correction.

References

Apr 1, 1986·Physical Review A: General Physics·D T Jacobs
Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·R F BergG A Zimmerli
Mar 24, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Hong HaoJayanta K Bhattacharjee
Apr 13, 2006·Applied Optics·Fabrizio CroccoloDavid S Cannell
Nov 25, 2006·Annals of the New York Academy of Sciences·Fabrizio CroccoloDavid S Cannell
Oct 13, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A F KostkoJ V Sengers
Nov 13, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Fabrizio CroccoloDavid S Cannell
Nov 28, 2007·Optics Letters·M T ValentineP D Kaplan
Mar 8, 2008·Applied Optics·P D KaplanD A Weitz
Jun 4, 2008·Physical Review Letters·Roberto Cerbino, Veronique Trappe
Nov 13, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Fabio GiavazziRoberto Cerbino
Jan 15, 2011·Physical Review Letters·L G WilsonW C K Poon
Feb 14, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Mathias ReuferWilson C K Poon
Feb 2, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Ana OprisanDaniel Beysens
Sep 13, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·John J HegsethDaniel Beysens

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Citations

Feb 10, 2017·The European Physical Journal. E, Soft Matter·Ana OprisanFabrizio Croccolo
Apr 29, 2015·The European Physical Journal. E, Soft Matter·Fabrizio Croccolo, Henri Bataller
Sep 5, 2017·NPJ Microgravity·Mohammad S SafariJacinta C Conrad

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