Oscillatory shear-induced bcc-fcc martensitic transformation in a colloidal suspension with long-range repulsive interactions

Giulia Fiorucci; Marjolein Dijkstra

doi:10.1063/5.0045537

Oscillatory shear-induced bcc-fcc martensitic transformation in a colloidal suspension with long-range repulsive interactions

Giulia Fiorucci, Marjolein Dijkstra^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

We perform non-equilibrium Brownian dynamics simulations to investigate the out-of-equilibrium phase behavior of a suspension of charged colloids under external oscillatory shear. We independently vary the frequency f and the maximum strain amplitude γ_max of the oscillations and map out an out-of-equilibrium phase diagram in the f-γ_max plane. Similar to what has been observed in earlier studies on colloidal hard spheres, we find the formation of a twinned face-centered-cubic phase in a specific range of γ_max, which displays a martensitic transition to a body-centered-cubic crystal within half of the oscillation cycle. We provide a comprehensive analysis of these structures and show how the system transforms from one to the other. We also report evidence of a sliding layer phase and a string phase.

Original language	English
Article number	164903
Pages (from-to)	1-14
Journal	Journal of Chemical Physics
Volume	154
Issue number	16
DOIs	https://doi.org/10.1063/5.0045537
Publication status	Published - 28 Apr 2021

Bibliographical note

Funding Information:
This work was supported by the Netherlands Center for Mul-tiscale Catalytic Energy Conversion (MCEC), a NWO Gravitation program funded by the Ministry of Education, Culture and Science of the government of the Netherlands. The authors gratefully thank Alfons van Blaaderen, Arnout Imhof, and Ajoy Kumar Kandar for the extensive and fruitful discussions on the subject and for encouraging this numerical investigation. G.F. thanks Ernest van der Wee and Guido Avvisati for useful discussions.

Publisher Copyright:
© 2021 Author(s).

Funding

This work was supported by the Netherlands Center for Mul-tiscale Catalytic Energy Conversion (MCEC), a NWO Gravitation program funded by the Ministry of Education, Culture and Science of the government of the Netherlands. The authors gratefully thank Alfons van Blaaderen, Arnout Imhof, and Ajoy Kumar Kandar for the extensive and fruitful discussions on the subject and for encouraging this numerical investigation. G.F. thanks Ernest van der Wee and Guido Avvisati for useful discussions.

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10.1063/5.0045537

5.0045537Final published version, 5.02 MBLicence: Taverne

Cite this

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title = "Oscillatory shear-induced bcc-fcc martensitic transformation in a colloidal suspension with long-range repulsive interactions",

abstract = "We perform non-equilibrium Brownian dynamics simulations to investigate the out-of-equilibrium phase behavior of a suspension of charged colloids under external oscillatory shear. We independently vary the frequency f and the maximum strain amplitude γmax of the oscillations and map out an out-of-equilibrium phase diagram in the f-γmax plane. Similar to what has been observed in earlier studies on colloidal hard spheres, we find the formation of a twinned face-centered-cubic phase in a specific range of γmax, which displays a martensitic transition to a body-centered-cubic crystal within half of the oscillation cycle. We provide a comprehensive analysis of these structures and show how the system transforms from one to the other. We also report evidence of a sliding layer phase and a string phase.",

author = "Giulia Fiorucci and Marjolein Dijkstra",

note = "Funding Information: This work was supported by the Netherlands Center for Mul-tiscale Catalytic Energy Conversion (MCEC), a NWO Gravitation program funded by the Ministry of Education, Culture and Science of the government of the Netherlands. The authors gratefully thank Alfons van Blaaderen, Arnout Imhof, and Ajoy Kumar Kandar for the extensive and fruitful discussions on the subject and for encouraging this numerical investigation. G.F. thanks Ernest van der Wee and Guido Avvisati for useful discussions. Publisher Copyright: {\textcopyright} 2021 Author(s).",

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N2 - We perform non-equilibrium Brownian dynamics simulations to investigate the out-of-equilibrium phase behavior of a suspension of charged colloids under external oscillatory shear. We independently vary the frequency f and the maximum strain amplitude γmax of the oscillations and map out an out-of-equilibrium phase diagram in the f-γmax plane. Similar to what has been observed in earlier studies on colloidal hard spheres, we find the formation of a twinned face-centered-cubic phase in a specific range of γmax, which displays a martensitic transition to a body-centered-cubic crystal within half of the oscillation cycle. We provide a comprehensive analysis of these structures and show how the system transforms from one to the other. We also report evidence of a sliding layer phase and a string phase.

AB - We perform non-equilibrium Brownian dynamics simulations to investigate the out-of-equilibrium phase behavior of a suspension of charged colloids under external oscillatory shear. We independently vary the frequency f and the maximum strain amplitude γmax of the oscillations and map out an out-of-equilibrium phase diagram in the f-γmax plane. Similar to what has been observed in earlier studies on colloidal hard spheres, we find the formation of a twinned face-centered-cubic phase in a specific range of γmax, which displays a martensitic transition to a body-centered-cubic crystal within half of the oscillation cycle. We provide a comprehensive analysis of these structures and show how the system transforms from one to the other. We also report evidence of a sliding layer phase and a string phase.

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Oscillatory shear-induced bcc-fcc martensitic transformation in a colloidal suspension with long-range repulsive interactions

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