Elasticity typically refers to a material's ability to store energy, whereas viscosity refers to a
material's tendency to dissipate it. In this review, we discuss fluids and solids for which this is …

As high-quality single-crystal materials used in electronic devices approach the microscale
and nanoscale, charge-transport phenomena in these devices result in inhomogeneous …

Active materials are characterized by continuous injection of energy at the microscopic level
and typically cannot be adequately described by equilibrium thermodynamics. Here we …

The principle of microscopic reversibility says that, in equilibrium, two-time cross-correlations
are symmetric under the exchange of observables. Thus, the asymmetry of cross …

The competition between thermal fluctuations and potential forces governs the stability of
matter in equilibrium, in particular the proliferation and annihilation of topological defects …

Rotational invariance strongly constrains the viscosity tensor of classical fluids. When this
symmetry is broken in anisotropic materials a wide array of novel phenomena become …

The theory of transport phenomena in multicomponent electrolyte solutions is presented
here through the integration of continuum mechanics, electromagnetism, and …

Diffusive transport is characterized by a diffusivity tensor which may, in general, contain both
a symmetric and an antisymmetric component. Although the latter is often neglected, we …

We derive a general lower bound on distributions of entropy production in interacting active
matter systems. The bound is tight in the limit that interparticle correlations are small and …

Exerting a nonequilibrium drive on an otherwise equilibrium Langevin process brings the
dynamics out of equilibrium but can also speed up the approach to the Boltzmann steady …