Cylindrical tubes and membranes are universal structural elements found in biology and engineering over a wide range of scales. Working in the framework of nonlinear elasticity, we consider the ...

Background Ankle sprain is among the most frequent sports injuries and a significant contributor to time lost from sports participation. The injury mechanism is traditionally described as an inversion ...

A new way of understanding the structure of proteins, polymers, minerals, and engineered materials has been discovered. The discovery, a new type of symmetry in the structure of materials, greatly ...

A new way of understanding the structure of proteins, polymers, minerals, and engineered materials will be published in the May 2011 issue of the journal Nature Materials. The discovery by two Penn ...