Publication

Engineering fluorescence with plasmonic, dielectric and air metasurfaces

2026

Abstract

We review our current research effort to use metasurfaces to manipulate the near-field interactions of quantum emitters, enhancing and controlling their fluorescence properties. Different from traditional far-field applications, we focus on metasurfaces that enable precise tuning of fluorescence intensity, lifetime, and energy transfer between donor–acceptor pairs. Three approaches are explored: (1) resonant waveguide gratings that reveal hidden optical states through FRET interactions; (2) Mie voids in silicon that confine light efficiently, allowing subwavelength emission control and multi-modal imaging; and (3) plasmonic metasurfaces supporting anapole modes to confine light in nanoscale cavities, enabling accurate control of the optical local density of states.

Official source

https://infoscience.epfl.ch/entities/publication/7cf51018-521c-411c-ac4d-ae03f0a161d1

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/7cf51018-521c-411c-ac4d-ae03f0a161d1

About this result

Related concepts (32)

Förster resonance energy transfer

Förster resonance energy transfer (FRET), fluorescence resonance energy transfer, resonance energy transfer (RET) or electronic energy transfer (EET) is a mechanism describing energy transfer between two light-sensitive molecules (chromophores). A donor chromophore, initially in its electronic excited state, may transfer energy to an acceptor chromophore through nonradiative dipole–dipole coupling. The efficiency of this energy transfer is inversely proportional to the sixth power of the distance between donor and acceptor, making FRET extremely sensitive to small changes in distance.

Quenching (fluorescence)

In chemistry, quenching refers to any process which decreases the fluorescent intensity of a given substance. A variety of processes can result in quenching, such as excited state reactions, energy transfer, complex-formation and collisions. As a consequence, quenching is often heavily dependent on pressure and temperature. Molecular oxygen, iodine ions and acrylamide are common chemical quenchers. The chloride ion is a well known quencher for quinine fluorescence.

Fluorescence

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore a lower photon energy, than the absorbed radiation. A perceptible example of fluorescence occurs when the absorbed radiation is in the ultraviolet region of the electromagnetic spectrum (invisible to the human eye), while the emitted light is in the visible region; this gives the fluorescent substance a distinct color that can only be seen when the substance has been exposed to UV light.

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Engineering fluorescence with plasmonic, dielectric and air metasurfaces

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