When we take a stroll on the beach, we walk on the sand without any trouble. The sand appears solid and is difficult to compress. When we put the same sand grains in an hourglass, they behave very ...

Granular materials, from sands to engineered powders, exhibit complex mechanical behaviour that challenges traditional concepts of solid and fluid mechanics alike. Researchers have increasingly ...

The study of granular material dynamics encompasses the investigation of how individual grains interact in dense flows, leading to a range of segregation phenomena. Granular segregation, whereby ...

Granular materials contain large numbers of small, discrete particles, which collectively behave like uniform media. Their thermal conductivity is crucial to understanding their overall behaviour – ...

Granular matter is all around us. Examples include sand, rice, nuts, coffee and even snow. These materials are made of solid particles that are large enough not to experience thermal fluctuations.

Johns Hopkins engineers have uncovered new details about how granular materials such as sand and rock behave under extreme impacts—findings that could someday help protect the Earth from dangerous ...

For humans to explore the Moon and Mars, most mission scenarios require that we shall make use of in-situ resources. This requires us to understand the properties and mechanics of the extraterrestrial ...

Jacqueline Reber receives funding from the Iowa State University College of Liberal Arts and Sciences Frontier Science Fund. Did you eat cereal this morning? Or have you walked on a gravel path? Maybe ...

Examples of granular matter: multicolored plastic balls in a playground, gravel, sesame seeds and lentils (clockwise from top left). Images by Julia Kertesz, Martin Olsson, Jitender Kumar and Zyance ...

Itai Einav receives funding from Australian Research Council. What looks like ordinary sand, rocks or snow flowing in one direction can actually hide swirling currents that move in multiple directions ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Jacqueline Reber, Iowa State University (THE CONVERSATION) Did you eat cereal this ...

(THE CONVERSATION) Did you eat cereal this morning? Or have you walked on a gravel path? Maybe you had a headache and had to take a pill? If you answered any of these questions with a yes, you ...