Strong magnetic fields in relativistic stars can be a cause of crust fracturing, resulting in the excitation of global torsional oscillations. Such oscillations could become observable in gravitational waves or in high-energy radiation, thus becoming a tool for probing the equation of state of relativistic stars. As the eigenfrequency of torsional oscillation modes is affected by the presence o...

We consider torsional wave propagation in a pre-stressed annular cylinder. Hydrostatic pressure is applied to the inner and outer surfaces of an incompressible hyperelastic annular cylinder, of circular cross-section, whose constitutive behaviour is governed by a Mooney–Rivlin strain energy function. The pressure difference creates an inhomogeneous deformation field, which modifies the inner an...

The simple model of the non-linear DNA dynamics [4] is pursued in order to study the local untwisting of DNA double helix. It is shown how the advancing RNA polymerase may force the motion of the torsional solitary wave along DNA.

An intriguing aspect of torsion, especially for chemists, is the fact that, unlike stretching, bending, shear, uniaxial, radial or isotropic compression, expansion etc, torsion is the only mode of deformation that is intrinsically chiral. Hence, torsion can turn achiral objects into chiral ones, and it can discriminate between chiral enantiomorphs turning them diastereomorphous. Beside this uni...