Physics of active emulsions

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Title: Physics of active emulsions
Authors: Weber, C
Zwicker, D
Juelicher, F
Lee, CF
Item Type: Journal Article
Abstract: Phase separating systems that are maintained away from thermodynamic equilibrium via molecular processes represent a class of active systems, which we call \textit{ active emulsions}. These systems are driven by external energy input for example provided by an external fuel reservoir. The external energy input gives rise to novel phenomena that are not present in passive systems. For instance, concentration gradients can spatially organise emulsions and cause novel droplet size distributions. Another example are active droplets that are subject to chemical reactions such that their nucleation and size can be controlled and they can spontaneously divide. In this review we discuss the physics of phase separation and emulsions and show how the concepts that governs such phenomena can be extended to capture the physics of active emulsions. This physics is relevant to the spatial organisation of the biochemistry in living cells, for the development novel applications in chemical engineering and models for the origin of life.
Issue Date: 29-Apr-2019
Date of Acceptance: 7-Feb-2019
URI: http://hdl.handle.net/10044/1/67457
DOI: https://doi.org/10.1088/1361-6633/ab052b
ISSN: 0034-4885
Publisher: IOP Publishing
Start Page: 1
End Page: 40
Journal / Book Title: Reports on Progress in Physics
Volume: 82
Copyright Statement: © 2019 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in Reports on Progress in Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at https://iopscience.iop.org/article/10.1088/1361-6633/ab052b
Keywords: Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
active emulsions
liquid phase separation
droplet ripening in concentration gradients
positioning of droplets
driven chemical reactions in emulsions
suppression of Ostwald-ripening
INDUCED PHASE-SEPARATION
MONTE-CARLO SIMULATIONS
POLYMER MEMBRANE FORMATION
THERMAL-INVERSION PROCESS
REACTIVE BINARY-MIXTURES
LATTICE-GAS MODEL
SPINODAL DECOMPOSITION
THERMODYNAMIC STABILITY
SEGREGATION DYNAMICS
CHEMICAL-REACTION
General Physics
01 Mathematical Sciences
02 Physical Sciences
Publication Status: Published
Embargo Date: 2020-04-29
Online Publication Date: 2019-04-29
Appears in Collections:Faculty of Engineering
Bioengineering



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