Two-dimensional (2D) material research is rapidly evolving to broaden the spectrum of
emergent 2D systems. Here, we review recent advances in the theory, synthesis …

Metamaterials, as artificially structured materials composed of subwavelength arrays of
resonant unit cells, can exhibit exotic properties beyond those accessible to natural …

Two-dimensional single crystal metals, in which the behavior of highly confined optical
modes is intertwined with quantum phenomena, are highly sought after for next-generation …

The noble metal nanoparticle has been widely utilized as a plasmonic unit to enhance
biosensors, by leveraging its electric and/or optical properties. Integrated with the “flexible” …

Miniaturized optical spectrometers could be of use in portable and wearable applications.
Such devices have typically been based on arrays of photodetectors that provide distinct …

Many species in nature have evolved remarkable strategies to visually adapt to the
surroundings for the purpose of protection and predation. Similarly, acquiring the …

Atomically thin two-dimensional (2D) metals may be key ingredients in next-generation
quantum and optoelectronic devices. However, 2D metals must be stabilized against …

Plasmonic phenomena in metals are commonly explored within the framework of classical
electrodynamics and semiclassical models for the interactions of light with free-electron …

Transparent metadevices could equip electronic systems with unique functionalities such as
anti-interference and stealth capabilities. However, optically transparent devices currently …

Surface plasmons in 2D materials such as graphene exhibit exceptional field confinement.
However, the low electron density of majority of 2D materials, which are semiconductors or …