@article {154591,
	title = {Strain hardening of fractal colloidal gels},
	journal = {Physical Review Letters},
	volume = {82},
	number = {5},
	year = {1999},
	pages = {1064},
	abstract = {We report on experiments on the rheology of gels formed by diffusion-limited aggregation of neutrally buoyant colloidal particles. These gels form very weak solids, with the elastic modulus, G{\textquoteright}(omega), larger than the loss modulus, G "(omega), and with both G{\textquoteright}(omega) and G "(omega) exhibiting only a very weak frequency dependence. Upon small but finite strains gamma \&lt; 0.45 the elastic modulus increases roughly exponentially with gamma(2). We explain the observed strain hardening with the highly nonlinear elastic response of the rigid backbone of the gel to elongational deformation.},
	url = {https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.82.1064},
	author = {Gisler, T. and Ball, R. and Weitz, D. A.}
}
