Self organization of exotic oil-in-oil phases driven by tunable electrohydrodynamics

Varshney, Atul and Ghosh, Shankar and Bhattacharya, S. and Yethiraj, Anand (2012) Self organization of exotic oil-in-oil phases driven by tunable electrohydrodynamics. Scientific Reports, 2 (738). ISSN 2045-2322

[img] [English] PDF - Published Version
Available under License Creative Commons Attribution Non-commercial.

Download (970Kb)

Abstract

Self organization of large-scale structures in nature - either coherent structures like crystals, or incoherent dynamic structures like clouds - is governed by long-range interactions. In many problems, hydrodynamics and electrostatics are the source of such long-range interactions. The tuning of electrostatic interactions has helped to elucidate when coherent crystalline structures or incoherent amorphous structures form in colloidal systems. However, there is little understanding of self organization in situations where both electrostatic and hydrodynamic interactions are present. We present a minimal two-component oil-in-oil model system where we can control the strength and lengthscale of the electrohydrodynamic interactions by tuning the amplitude and frequency of the imposed electric field. As a function of the hydrodynamic lengthscale, we observe a rich phenomenology of exotic structure and dynamics, from incoherent cloud-like structures and chaotic droplet dynamics, to polyhedral droplet phases, to coherent droplet arrays.

Item Type: Article
URI: http://research.library.mun.ca/id/eprint/8051
Item ID: 8051
Department(s): Science, Faculty of > Physics and Physical Oceanography
Date: 15 October 2012
Date Type: Publication
Related URLs:

Actions (login required)

View Item View Item

Downloads

Downloads per month over the past year

View more statistics