Gelling by Heating Auteur(s): Roldan-Vargas Sandalo, Smallenburg Frank, Kob W., Sciortino Francesco (Article) Publié: Scientific Reports, vol. 3 p.2451 (2013) Texte intégral en Openaccess : Ref HAL: hal-00858675_v1 PMID 23948858 DOI: 10.1038/srep02451 WoS: 000323147500001 Exporter : BibTex | endNote 25 Citations Résumé: We exploit the concept of competing interactions to design a binary mixture of patchy particles that forms a reversible gel upon heating. Our molecular dynamics computer simulation of such a system shows that with increasing temperature the relaxation dynamics slows down by more than four orders of magnitude and then speeds up again. The system is thus a fluid both at high and at low temperatures and a solid-like disordered open network structure at intermediate temperature. We further discuss the feasibility of realizing a real material with this reversible behavior. |