Multifunctional and Transformative Metaphotonics with Emerging Materials

Abstract

Future technologies underpinning multifunctional physical and chemical systems and compact biological sensors will rely on densely packed transformative and tunable circuitry employing nanophotonics. For many years, plasmonics was considered as the only available platform for subwavelength optics, but the recently emerged field of resonant metaphotonics may provide a versatile practical platform for nanoscale science by employing resonances in high-index dielectric nanoparticles and metasurfaces. Here, we discuss the recently emerged field of metaphotonics and describe its connection to material science and chemistry. For tunabilty, metaphotonics employs a variety of the recently highlighted materials such as polymers, perovskites, transition metal dichalcogenides, and phase change materials. This allows to achieve diverse functionalities of metasystems and metasurfaces for efficient spatial and temporal control of light by employing multipolar resonances and the physics of bound states in the continuum. We anticipate expanding applications of these concepts in nanolasers, tunable metadevices, metachemistry, as well as a design of a new generation of chemical and biological ultracompact sensing devices.

Tunable optical properties of transition metal dichalcogenide nanoparticles synthesized by femtosecond laser ablation and fragmentation

“…24 These unique characteristics make van der Waals (vdWs) monolayers an ideal platform for optical applications, 25 in particular, to all-dielectric nanophotonics, which utilize the resonant behavior of high-index nanoresonators. 26–31 However, close examination reveals that although monolayers demonstrate record-high efficiency per thickness, 32 their device performance is limited by their atomic thickness and requires sophisticated optical design. 12,33…”

“…24 These unique characteristics make van der Waals (vdWs) monolayers an ideal platform for optical applications, 25 in particular, to all-dielectric nanophotonics, which utilize the resonant behavior of high-index nanoresonators. [26][27][28][29][30][31] However, close examination reveals that although monolayers demonstrate record-high efficiency per thickness, 32 their device performance is limited by their atomic thickness and requires sophisticated optical design. 12,33 It inspired researchers to shift their attention to their bulk counterparts 34 since they preserve the advantages of monolayers, namely, large optical constants, 6 an asymmetrical optical response, 23,35 and excitonic dielectric function, 36 thanks to weak vdW bonding between layers.…”

High‐Quality CsPbBr3 Perovskite Films with Modal Gain above 10 000 cm−1 at Room Temperature

“…Also, the high-quality films will be beneficial for integration with other emerging functional materials for novel devices. [55,56]…”

Perovskite Nanowire Laser for Hydrogen Chloride Gas Sensing

“…Finally, the demonstrated dependence of the laser mode spectral shift might be useful for tunable laser applications , and transformative nanophotonics . Namely, the reconfiguration of such high Q -factor optical modes as bound states in the continuum and exceptional points would be beneficial not only for spectral control but also for manipulation by spatial parameters …”