Active plasmonics is a burgeoning and challenging subfield of plasmonics. It exploits the
active control of surface plasmon resonance. In this review, a first-ever in-depth description …

Metamaterials, artificial electromagnetic media that are structured on the subwavelength
scale, were initially suggested for the negative-index'superlens'. Later metamaterials …

Reconfigurable intelligent surfaces (RISs) play an essential role in various applications,
such as next-generation communication, uncrewed vehicles, and vital sign recognizers …

Metasurfaces, two-dimensional equivalents of metamaterials, are engineered surfaces
consisting of deep subwavelength features that have full control of the electromagnetic …

The intriguing physics of vanadium dioxide (VO 2) makes it not only a fascinating object of
study for fundamental research on solid-state physics but also an attractive means to actively …

Resistive switching (RS) phenomena are reversible changes in the metastable resistance
state induced by external electric fields. After discovery∼ 50 years ago, RS phenomena …

The reversible phase transition in vanadium dioxide (VO 2) with light, heat, electric,
magnetic, and mechanical stimuli is the enabling concept to function as a smart material. It is …

Devices that manipulate light represent the future of information processing. Flat optics and
structures with subwavelength periodic features (metasurfaces) provide compact and …

Hybrid metamaterials that exhibit reconfigurable responses under external stimulus, such as
electric fields and light radiation, have only recently been demonstrated by combining active …

Although phase transitions have long been a centerpiece of condensed matter materials
science studies, a number of recent efforts focus on potentially exploiting the resulting …