Open AccessMultiple Glassy States in a Simple Model System
Author(s) -
Khoa N. Pham,
Antonio M. Puertas,
Johan Bergenholtz,
Stefan U. Egelhaaf,
A. Moussaı̈d,
P. N. Pusey,
Andrew B. Schofield,
M. E. Cates,
Matthias Fuchs,
Wilson C. K. Poon
Publication year - 2002
Publication title -
science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 12.556
H-Index - 1186
eISSN - 1095-9203
pISSN - 0036-8075
DOI - 10.1126/science.1068238
Subject(s) - hard spheres , colloid , molecular dynamics , statistical physics , attraction , spheres , chemical physics , coupling (piping) , simple (philosophy) , materials science , glass transition , dynamic light scattering , particle (ecology) , physics , condensed matter physics , nanotechnology , thermodynamics , chemistry , nanoparticle , quantum mechanics , polymer , linguistics , philosophy , oceanography , epistemology , astronomy , geology , metallurgy , composite material
Experiments, theory, and simulation were used to study glass formation in a simple model system composed of hard spheres with short-range attraction ("sticky hard spheres"). The experiments, using well-characterized colloids, revealed a reentrant glass transition line. Mode-coupling theory calculations and molecular dynamics simulations suggest that the reentrance is due to the existence of two qualitatively different glassy states: one dominated by repulsion (with structural arrest due to caging) and the other by attraction (with structural arrest due to bonding). This picture is consistent with a study of the particle dynamics in the colloid using dynamic light scattering.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom