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Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids
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Curvature dynamics and long-range effects on fluid-fluid interfaces with colloids.
A Tiribocchi1, F Bonaccorso2, M Lauricella3
1Center for Life Nano Science@La Sapienza, Istituto Italiano di Tecnologia, 00161 Roma, Italy. adriano.tiribocchi@iit.it and Istituto per le Applicazioni del Calcolo CNR, via dei Taurini 19, 00185, Rome, Italy. m.lauricella@iac.cnr.it.
Soft Matter
|March 1, 2019
Summary
Soft colloidal dumbbells influence interface curvature in phase-separating fluids without altering coarsening dynamics. This finding offers insights for designing novel soft mesoscale materials.
Area of Science:
- Soft Matter Physics
- Fluid Dynamics
- Colloidal Science
Background:
- Phase-separating binary fluids are crucial in materials science.
- Colloidal particles at fluid interfaces can alter interfacial properties.
Purpose of the Study:
- To investigate how colloidal dumbbells affect the dynamics of phase-separating binary fluid interfaces.
- To explore potential applications in soft mesoscale material design.
Main Methods:
- Lattice Boltzmann-immersed boundary method simulations were employed.
- The study focused on colloidal dumbbells anchored to the fluid-fluid interface.
Main Results:
- Soft dumbbells significantly impacted interface curvature dynamics.
- Coarsening dynamics remained largely unchanged.
- Distinct non-local effects in curvature dynamics were observed.
Conclusions:
- Colloidal dumbbells offer a route to control interface curvature.
- The observed non-local effects may be leveraged for designing new soft mesoscale materials.
- Analyzing curvature dynamics can reveal local inhomogeneities in binary fluid systems.
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