Microstructure and dynamics near an attractive colloidal glass transition.
The microstructure and dynamics of a colloidal system interacting via short-ranged interparticle potential is studied by ultra-small-angle x-ray scattering and x-ray photon correlation spectroscopy. A colloidal gas-liquid type transition is induced when the short-ranged attractive interactions attain sufficient magnitude. The development of liquidlike structure is preceded by a systematic transition in the particle dynamics from diffusive to constrained motion and then completely frozen behavior. This demonstrates the existence of a jamming transition induced by strong short-ranged attractive interactions even at low packing fractions.
Pontoni
D
D
European Synchrotron Radiation Facility, 38043 Grenoble, France.
Narayanan
T
T
Petit
J-M
JM
Grübel
G
G
Beysens
D
D