Rationally designed architected materials have attained previously untapped territories in
materials property space. The properties and behaviours of architected materials need not …

Recent progress in nanophotonics and material science has inspired a strong interest in
optically-induced material dynamics, opening new research directions in the distinct fields of …

Wireless power transfer—the transmission of electromagnetic energy without physical
connectors such as wires or waveguides—typically exploits electromagnetic field control …

The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

The concept of topological energy bands and their manifestations have been demonstrated
in condensed matter systems as a fantastic paradigm toward unprecedented physical …

In solid state physics, a bandgap (BG) refers to a range of energies where no electronic
states can exist. This concept was extended to classical waves, spawning the entire fields of …

Robustness against disorder and defects is a pivotal advantage of topological systems,
manifested by the absence of electronic backscattering in the quantum-Hall and spin-Hall …

In linear, lossless, time-invariant, and nonbiased acoustic systems, mode transitions are time
reversible, consistent with Lorentz reciprocity and implying a strict symmetry in space-time …

Floquet topological insulators, which have an exotic topological order sustained by time-
varying Hamiltonians, could be of use in a range of technologies, including wireless …

Temporal interfaces introduced by abrupt switching of the constitutive parameters of
unbounded media enable unusual wave phenomena. So far, their explorations have been …