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Comment on "Faceting and Flattening of Emulsion Droplets: A Mechanical Model".

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Haas, Pierre A 
Goldstein, Raymond E 
Cholakova, Diana 
Denkov, Nikolai 
Smoukov, Stoyan K 

Abstract

Garcia-Aguilar et al. [1] have shown that the deforma- tions of “shape-shifting droplets”, reported in a series of experimental papers spawned by Refs. [2, 3], are consis- tent with an elastic model. Here we show that the inter- play between surface tension and intrinsic curvature in this model is mathematically equivalent to a physically very different phase-transition mechanism of the same process described previously [4, 5]. Hence, the models cannot distinguish between the two mechanisms, and it is not possible to claim that one mechanism underlies the observed phenomena without a more detailed compari- son of the predictions of both mechanisms with experi- ments. We suggest that the increasing number of seem- ingly contradictory experimental results indicates that the two systems [2, 3] are different. The observed “shape- shifting” processes are therefore likely to be similar out- comes of two very different physical mechanisms.

Description

Keywords

Emulsions, Particle Size, Water

Journal Title

Phys Rev Lett

Conference Name

Journal ISSN

0031-9007
1079-7114

Volume Title

126

Publisher

American Physical Society (APS)

Rights

All rights reserved
Sponsorship
Engineering and Physical Sciences Research Council (EP/M017982/1)