Diffusion of waves is a natural result in propagation, like sound, water, and light, while the localization of waves is an unconventional phenomenon in periodic media. It has been an important ...

Topological insulators have been an exciting field of research with fundamental interest as well as practical applications such as robust transport of electrons and light, and topological quantum ...

Just like a book can't be judged by its cover, a material can't always be judged by its surface. But, for an elusive conjectured class of materials, physicists have now shown that the surface ...