Aggregate morphing of self-aligining soft active disks in semi-confined geometry
ORAL
Abstract
The behavior of soft active particles differs from that of hard particles due to their ability to deform under forces. Using Langevin simulations, the collective effects of such particles in
a doubly periodic box geometry with explicit alignment mechanism have been investigated numerically. It has been discovered that particle softness works against MIPS[1, 2] and
the system displays re-entrant behavior in which the system transforms to a MIPS state from homogeneous state and back to homogeneous state with further increase in alignment
strength[3].
In the current work, we evaluate the impact of confinement on the collective effects of soft particles by changing the box form to a corrugated channel[4]. It has been observed
that the boundaries are essential for the control of active particles. We explore the system in the parameter space of alignment strength and box dimension. Interesting characteristics
of the system include the aggregate buildup at the wall being both uniform and non-uniform depending on the alignment strength and box dimension values. As the softness parameter
decreases, the system’s intriguing structural and dynamical features become more apparent, such as the appearance and disappearance of layered structure. Several of these insights
concerning the behavior of self-aligning soft active particles in confined spaces, as well as the possibilities for manipulating their structure via box geometry, will be presented in this
work.
Our study has several implications such as drug delivery, understanding cell movement through pores and veins in biological systems, and separation of particles among others.
References
[1] S. De Karmakar, A. Chugh, and R. Ganesh, Scientific Reports 12, 22563 (2022).
[2] S. De Karmakar and R. Ganesh, Soft Matter 18, 7301 (2022).
[3] S. De Karmakar and R. Ganesh, Physical Review E 106, 044607 (2022).
[4] A. Chugh, S. De Karmakar, and R. Ganesh, Manuscript under prerparation .
a doubly periodic box geometry with explicit alignment mechanism have been investigated numerically. It has been discovered that particle softness works against MIPS[1, 2] and
the system displays re-entrant behavior in which the system transforms to a MIPS state from homogeneous state and back to homogeneous state with further increase in alignment
strength[3].
In the current work, we evaluate the impact of confinement on the collective effects of soft particles by changing the box form to a corrugated channel[4]. It has been observed
that the boundaries are essential for the control of active particles. We explore the system in the parameter space of alignment strength and box dimension. Interesting characteristics
of the system include the aggregate buildup at the wall being both uniform and non-uniform depending on the alignment strength and box dimension values. As the softness parameter
decreases, the system’s intriguing structural and dynamical features become more apparent, such as the appearance and disappearance of layered structure. Several of these insights
concerning the behavior of self-aligning soft active particles in confined spaces, as well as the possibilities for manipulating their structure via box geometry, will be presented in this
work.
Our study has several implications such as drug delivery, understanding cell movement through pores and veins in biological systems, and separation of particles among others.
References
[1] S. De Karmakar, A. Chugh, and R. Ganesh, Scientific Reports 12, 22563 (2022).
[2] S. De Karmakar and R. Ganesh, Soft Matter 18, 7301 (2022).
[3] S. De Karmakar and R. Ganesh, Physical Review E 106, 044607 (2022).
[4] A. Chugh, S. De Karmakar, and R. Ganesh, Manuscript under prerparation .
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Presenters
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Anshika Chugh
Institute for Plasma Research
Authors
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Anshika Chugh
Institute for Plasma Research
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Soumen D Karmakar
Institute for Theoretical Physics IV, University of Stuttgart
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Rajaraman Ganesh
Institute for Plasma Research, Bhat