Modeling of heterogeneous materials and media is a problem of fundamental importance to
a wide class of phenomena and systems, ranging from condensed matter physics, soft …

Granular materials are ubiquitous in the world around us. They have properties that are
different from those commonly associated with either solids, liquids, or gases. In this review …

Granular materials are ubiquitous in our daily lives. While they have been the subject of
intensive engineering research for centuries, in the last two decades granular matter has …

V ictor Hugo suggested the possibility that patterns created by the movement of grains of
sand are in no small part responsible for the shape and feel of the natural world we live in …

Granulated materials, like sand and sugar and salt, are composed of many pieces that can
move independently. The study of collisions and flow in these materials requires new …

Granular materials, like sand, powder or grains present intriguing phenomena. Vibration and
shearing can lead to convective motion and segregation. A variation of stress may cause …

Experiments on vertically oscillated granular layers in an evacuated container reveal a
sequence of well-defined pattern bifurcations as the container acceleration is increased …

Experiments on vertically oscillated granular layers reveal, at a critical acceleration, a well-
defined transition from a flat surface to standing wave patterns oscillating at half the …

Vibrations in a granular material can spontaneously produce convection rolls reminiscent of
those seen in fluids. Magnetic resonance imaging provides a sensitive and noninvasive …

We present an experimental study of velocity statistics for a partial layer of inelastic colliding
beads driven by a vertically oscillating boundary. Over a wide range of parameters …