| Literature DB >> 16090846 |
S Manley1, Benny Davidovitch, Neil R Davies, L Cipelletti, A E Bailey, R J Christianson, U Gasser, V Prasad, P N Segre, M P Doherty, S Sankaran, A L Jankovsky, B Shiley, J Bowen, J Eggers, C Kurta, T Lorik, D A Weitz.
Abstract
Colloidal silica gels are shown to stiffen with time, as demonstrated by both dynamic light scattering and bulk rheological measurements. Their elastic moduli increase as a power law with time, independent of particle volume fraction; however, static light scattering indicates that there are no large-scale structural changes. We propose that increases in local elasticity arising from bonding between neighboring colloidal particles can account for the strengthening of the network, while preserving network structure.Entities:
Year: 2005 PMID： 16090846 DOI： 10.1103/PhysRevLett.95.048302
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161