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

Dissipation in mechanics, optics, acoustics, and electronic circuits is nowadays recognized
to be not always detrimental but can be exploited to achieve non-Hermitian topological …

The discovery of non-Hermitian skin effect (NHSE) has opened an exciting direction for
unveiling unusual physics and phenomena in non-Hermitian system. Despite notable …

Wave absorption in time-invariant, passive thin films is fundamentally limited by a trade-off
between bandwidth and overall thickness. In this work, we investigate the use of temporal …

Exceptional points are spectral singularities in non-Hermitian systems at which two or more
eigenvalues and their corresponding eigenvectors simultaneously coalesce. Originating …

In this opinion article, we briefly summarize some of the background materials and recent
developments in the field of temporal and spatiotemporal media and provide our opinion on …

Multisection quarter-wave impedance transformers are widely applied in microwave
engineering and optics to attain impedance-matching networks and antireflection coatings …

Recent developments in non-Hermitian physics offer exciting opportunities for a broad range
of basic research and engineering applications relevant to the antennas and propagation …

Metamaterials and metasurfaces are designed by spatially arranging (periodically or non-
periodically) subwavelength geometries, allowing a tailored manipulation of the …

Nonreciprocity is of particular importance to realize one-way propagation, thus attracting
intensive research interest in various fields. Thermal waves, essentially originating from …