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 …

Chirality or handedness distinguishes an object from its mirror images, such as the spread
thumb, index finger, and middle finger of the right and left hand. In mathematics, it is …

Manipulating the properties of the isofrequency contours (IFCs) of materials provides a
powerful means of controlling the interaction between light and matter. Hyperbolic …

Transverse spin momentum related to the spin angular momentum (SAM) of light has been
theoretically studied recently and predicted to generate an intriguing optical lateral force …

Structured waves are ubiquitous for all areas of wave physics, both classical and quantum,
where the wavefields are inhomogeneous and cannot be approximated by a single plane …

Heat management is crucial for state‐of‐the‐art applications such as passive radiative
cooling, thermally adjustable wearables, and camouflage systems. Their adaptive versions …

Skyrmions with topologically stable configuration have shown a promising route toward high-
density magnetic and photonic information processing due to their defect-immune and low …

Spin–momentum locking, a manifestation of topological properties that governs the behavior
of surface states, was studied intensively in condensed-matter physics and optics, resulting …

Spin angular momenta play important roles in light–matter interactions, leading to the
emergence of the spin Hall effect and topological quasiparticles in modern optics. The …

The unidirectional excitation of near-field optical modes is a fundamental prerequisite for
many photonic applications, such as wireless power transfer and information …