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Updated: Feb 14, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
Published on: May 20, 2014
Dynamic modulation of inter-particle correlation during colloidal assembly in a confined medium: revealed by real
Debasis Sen1, Avik Das1, Jitendra Bahadur2
1Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai-400085, India. debasis@barc.gov.in and Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India.
Abstract:
Using real time small-angle X-ray scattering, we ellucidate a hitherto unobserved non-monotonic evolution of inter-particle correlation while colloidal particles assemble across pore boundary in a confined medium under influence of solvent evaporation. Time variation of local volume fraction of the particles passes through distinct modulation prior to reaching equilibrium. It has been demonstrated that the amplitude of oscillation depends strongly on size of the assembling particles. We comprehend such non-linear temporal evolution of particle correlation through density functional theory and molecular dynamics simulation.
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