<div class="csl-bib-body">
<div class="csl-entry">Biswas, T., Kahl, G., & Shrivastav, G. P. (2024, September 23). <i>Dynamics of non-equilibrium phase separation in an asymmetric mixture of ultrasoft particles under shear</i> [Poster Presentation]. 12th Liquid Matter Conference, Mainz, Germany. http://hdl.handle.net/20.500.12708/210240</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/210240
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dc.description.abstract
Phase separation plays a crucial role in determining the self-assembly of biological and soft matter
systems. In the former case, liquid-liquid phase separation inside a cell leads to the formation of
various macromolecular aggregates. The interaction among these aggregates is soft and the particles
are generally modelled by ultrasoft particles. We have studied the phase separation dynamics of size-
asymmetric binary mixture of ultrasoft particles (with species A and B). When quenched to a
lower temperature below critical temperature, the system undergoes a phase separation into an A-and
a B-rich phase. In detailed and extensive molecular dynamics simulations (with up to 786432
particles) we have identified the critical point. When cooling the system the domains of the two
components grow in a power-law manner (𝑖. 𝑒, 𝑙(𝑡)~𝑡𝛼 with an exponent α = 1/3) which is consistent
with the Lifshitz-Slyozov law. In a subsequent step we have exposed the system – as it is cooled
down to low temperatures - to shear and have studied the stress response of the system to the these
external forces; in their presence the domains grow with exponents α = 4/3 and α = 1/3 in the shear
and the gradient direction, respectively. In particular we have analysed how spatial inhomogeneities
(which are characteristic for the phase separation scenario) evolve under the shear forces.
en
dc.language.iso
en
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dc.subject
phase separation
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dc.subject
Molecular dynamics
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dc.subject
ultrasoft particles
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dc.subject
shear flow
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dc.subject
Rheology
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dc.title
Dynamics of non-equilibrium phase separation in an asymmetric mixture of ultrasoft particles under shear
