2015/01/13 by Ian Williams, Erdal C. Oğuz, Paul Bartlett +3
Engineering · Materials Science · Physics and Astronomy · #Boundary (topology) #Boundary value problem #Colloid #Material Dynamics and Properties #Non-equilibrium thermodynamics #Phase Equilibria and Thermodynamics #Pickering emulsions and particle stabilization #Relaxation (psychology) #Supercooling #cond-mat.soft
paper · pdf · doi:10.1063/1.4905472
published as The Journal of Chemical Physics 142, 024505 (2015) · 8 pages
openalex publication_date 2015/01/13 · openalex created_date 2016/06/24 · arxiv created 2020/11/08 · arxiv updated 2020/11/10 · openalex updated_date 2026/08/05
Understanding relaxation of supercooled fluids is a major challenge and confining such systems can lead to bewildering behaviour. Here, we exploit an optically confined colloidal model system in which we use reduced pressure as a control parameter. The dynamics of the system are "Arrhenius" at low and moderate pressure, but at higher pressures relaxation is faster than expected. We associate this faster relaxation with a decrease in density adjacent to the confining boundary due to local ordering in the system enabled by the flexible wall.