@article {C3MH00099K,
	title = {Expansion and rupture of charged microcapsules},
	journal = {Mater. Horiz.},
	volume = {1},
	year = {2014},
	pages = {92-95},
	publisher = {The Royal Society of Chemistry},
	abstract = {We study the deformations of pH-responsive spherical microcapsules - micrometer-scale liquid drops surrounded by thin{,} solid shells - under the influence of electrostatic forces. When exposed to a large concentration of NaOH{,} the microcapsules become highly charged{,} and expand isotropically. We find that the extent of this expansion can be understood by coupling electrostatics with shell theory; moreover{,} the expansion dynamics is well described by Darcy{{\textquoteright}}s law for fluid flow through the microcapsule shell. Unexpectedly{,} however{,} below a threshold NaOH concentration{,} the microcapsules begin to disintegrate{,} and eventually rupture; they then expand non-uniformly{,} ultimately forming large{,} jellyfish-like structures. Our results highlight the fascinating range of behaviors exhibited by pH-responsive microcapsules{,} driven by the interplay between electrostatic and mechanical forces.},
	doi = {10.1039/C3MH00099K},
	url = {http://dx.doi.org/10.1039/C3MH00099K},
	author = {Datta, Sujit S. and Abbaspourrad, Alireza and Weitz, David A}
}
