339 citations · 1.5k across the 23 of their papers we have counts for
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Hyper-Auxeticity and the Volume Phase Transition of Polymer Gels
Andrea Ninarello, Emanuela Zaccarelli
Thermoresponsive hydrogels exhibit reversible deswelling at the Volume Phase Transition (VPT), associated to a minimum of the Poisson's ratio . Recent numerical investigations u…
Auxetic polymer networks: The role of crosslinking, density and disorder
Andrea Ninarello, José Ruiz-Franco, Emanuela Zaccarelli
Low-connectivity polymer networks were recently found to behave auxetically when subjected to small tensions, that is, their Poisson's ratio becomes negative. In addition, for…
Structure and elasticity of model disordered, polydisperse and defect-free polymer networks
Valerio Sorichetti, Andrea Ninarello, José Ruiz-Franco +5
The elasticity of disordered and polydisperse polymer networks is a fundamental problem of soft matter physics that is still open. Here, we self-assemble polymer networks via simul…
Onset of criticality in hyper-auxetic polymer networks
Andrea Ninarello, José Ruiz-Franco, Emanuela Zaccarelli
Against common sense, auxetic materials expand or contract perpendicularly when stretched or compressed, respectively, by uniaxial strain, being characterized by a negative Poisson…
Dynamical properties of different models of elastic polymer rings: confirming the link between deformation and fragility
Nicoletta Gnan, Fabrizio Camerin, Giovanni Del Monte +2
We report extensive numerical simulations of different models of 2D polymer rings with internal elasticity. We monitor the dynamical behavior of the rings as a function of the pack…
Two-step deswelling in the Volume Phase Transition of thermoresponsive microgels
Giovanni Del Monte, Domenico Truzzolillo, Fabrizio Camerin +7
Thermoresponsive microgels are one of the most investigated class of soft colloids, thanks to their ability to undergo a Volume Phase Transition (VPT) close to ambient temperature.…
Charge affinity and solvent effects in numerical simulations of ionic microgels
G. Del Monte, F. Camerin, A. Ninarello +3
Ionic microgel particles are intriguing systems in which the properties of thermo-responsive polymeric colloids are enriched by the presence of charged groups. In order to rational…
Microgels at interfaces behave as 2D elastic particles featuring reentrant dynamics
Fabrizio Camerin, Nicoletta Gnan, José Ruiz-Franco +3
Soft colloids are increasingly used as model systems to address fundamental issues such as crystallisation and the glass and jamming transitions. Among the available classes of sof…
Numerical insights on ionic microgels: structure and swelling behaviour
Giovanni Del Monte, Andrea Ninarello, Fabrizio Camerin +3
Recent progress has been made in the numerical modelling of neutral microgel particles with a realistic, disordered structure. In this work we extend this approach to the case of c…
Microgels Adsorbed at Liquid-Liquid Interfaces: A Joint Numerical and Experimental Study
Fabrizio Camerin, Miguel Angel Fernandez-Rodriguez, Lorenzo Rovigatti +5
Soft particles display highly versatile properties with respect to hard colloids, even more so at fluid-fluid interfaces. In particular, microgels, consisting of a cross-linked pol…
Modelling microgels with controlled structure across the volume phase transition
Andrea Ninarello, Jérôme J. Crassous, Divya Paloli +5
Thermoresponsive microgels are soft colloids that find widespread use as model systems for soft matter physics. Their complex internal architecture, made of a disordered and hetero…
Connecting elasticity and effective interactions of neutral microgels: the validity of the Hertzian model
Lorenzo Rovigatti, Nicoletta Gnan, Andrea Ninarello +1
An important open problem in materials science is whether a direct connection exists between single-particle elastic properties and the macroscopic bulk behavior. Here we address t…
Low-frequency vibrational modes of stable glasses
Lijin Wang, Andrea Ninarello, Pengfei Guan +3
We numerically study the evolution of the vibrational density of states of zero-temperature glasses when their kinetic stability is varied over an extremely broad range, ran…