Comment on "Faceting and Flattening of Emulsion Droplets: A Mechanical Model".
Physical review letters
American Physical Society
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Haas, P., Goldstein, R., Cholakova, D., Denkov, N., & Smoukov, S. K. (2021). Comment on "Faceting and Flattening of Emulsion Droplets: A Mechanical Model".. Physical review letters, 126 (25), 259801. https://doi.org/10.1103/physrevlett.126.259801
Garcia-Aguilar et al.  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.
External DOI: https://doi.org/10.1103/physrevlett.126.259801
This record's URL: https://www.repository.cam.ac.uk/handle/1810/322375
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