Bond-orientational ordering and shear rigidity in modulated colloidal liquids
Chinmay Das, A. K. Sood, H. R. Krishnamurthy
TL;DR
This paper demonstrates that modulated colloidal liquids under periodic laser fields exhibit long-range bond-orientational order and shear rigidity, combining theoretical and simulation evidence.
Contribution
It reveals the emergence of bond-orientational order and shear rigidity in modulated colloidal liquids through theoretical analysis and Monte Carlo simulations.
Findings
Bond-orientational order persists over long range.
Shear rigidity is present in the modulated liquid phase.
Translational order decays exponentially, bond-orientational order saturates.
Abstract
From Landau-Alexander-McTague theory and Monte-Carlo simulation results we show that the modulated liquid obtained by subjecting a colloidal system to a periodic laser modulation has long range bond-orientational order and non-zero shear rigidity. From infinite field simulation results we show that in the modulated liquid phase, the translational order parameter correlation function decays to zero exponentially while the correlation function for the bond-orientational order saturates to a finite value at large distances.
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