Themed collection Advances in nanophotonics, plasmonics, and nano-optics

The advent of smart-engineered photonic materials, a development primarily influenced by the cutting-edge technology of artificial intelligence (AI), has ushered in a new era of unprecedented control over the manipulation and propagation of light.

Dual-color light emission from WSe₂ and WS₂ monolayers is achieved via phase-delayed AC carrier injection, enabling balanced, tunable, and stable emission for advanced multicolor optoelectronics and integrated photonic applications.

Metalenses have garnered significant attention for their remarkable ability to precisely focus light while obviating the inconvenience and intricacy associated with conventional curved lenses.

Polarisation imaging enhances the information available from satellite remote sensing. We present a metasurface designed for ultra-compact polarisation imaging with error monitoring, suitable for observing the Earth's surface with small satellites.

This study focuses on the structural, photoluminescence and photocatalytic properties of a Dy³⁺-doped sodium zinc molybdate phosphor.

SERS spectra of molecules on nanostructured SERS substrates can be altered by plasmonic effects induced by focusing/defocusing in a typical micro-Raman setup, including significant non-constancy of the intensity ratio of various SERS bands.

This work presents an algorithm to extract input impedance and S-parameters of plasmonic nano-antennas from EELS images at mid-infrared frequencies.

Ultra-sensitive, flexible PVDF sensors with nanoimprinted plasmonic designs, integrating photonic and piezoelectric properties for enhanced SERS-based detection and diagnostics.

A multimode nanoslit interferometer enables the selective excitation of resonant modes through surface plasmon interference, achieved by adjusting geometrical parameters and phase control, with promising applications in biosensing.

Highly controllable direct laser writing allows the fabrication of individual nanopillars with up to an aspect ratio of 4 in less than 2 hours. The developed SERS substrates show up to 10⁶ Raman signal enhancement.

Optical spectroscopy experiments on an important representative of kagome metals, FeSn, revealed the emergence of Dirac electrons dominating the low energy electrodynamics of the system, providing evidence for quasi-2D Dirac bulk states.

SERS, SEF, and SPR multimodal sensing nanoplasmonic chip utilizing ESP, LSP, and nanoantenna coupling showing ultrahigh enhancement and lower variability.