Curvature dynamics and long-range effects on fluid–fluid interfaces with colloids. Issue 13 (28th February 2019)

• Record Type: Journal Article
• Authors: Tiribocchi, A.; Bonaccorso, F.; Lauricella, M.; Melchionna, S.; Montessori, A.; Succi, S.
• Is Part Of: Soft matter. Volume 15:Issue 13(2019)
• Page Start: 2848
• Page End: 2862
• Publication Date: 2019-02-28
• Subjects: Soft condensed matter -- Periodicals; 530.413
• DOI: 10.1039/c8sm02396d
• Languages: English
• ISSNs: 1744-683X

Abstract

Abstract : The fluid–fluid interface curvature can provide new insights into local inhomogeneities of a binary fluid mixture containing colloidal particles. Abstract : We investigate the dynamics of a phase-separating binary fluid, containing colloidal dumbbells anchored to the fluid–fluid interface. Extensive lattice Boltzmann-immersed boundary method simulations reveal that the presence of soft dumbbells can significantly affect the curvature dynamics of the interface between phase-separating fluids, even though the coarsening dynamics is left nearly unchanged. In addition, our results show that the curvature dynamics exhibits distinct non-local effects, which might be exploited for the design of new soft mesoscale materials. We point out that the inspection of the statistical dynamics of the curvature can disclose new insights into local inhomogeneities of the binary fluid configuration, as a function of the volume fraction and aspect ratio of the dumbbells.