All-dielectric thermonanophotonics

Abstract

Nanophotonics is an important branch of modern optics dealing with lightmatter interaction at the nanoscale. Nanoparticles can exhibit enhanced light absorption under illumination by light, and they become nanoscale sources of heat that can be precisely controlled and manipulated. For metal nanoparticles, such effects have been studied in the framework of thermoplasmonics which, similar to plasmonics itself, has a number of limitations. Recently emerged all-dielectric resonant nanophotonics is associated with optically-induced electric and magnetic Mie resonances, and this field is developing very rapidly in the last decade. As a result, thermoplasmonics is being replaced by all-dielectric thermonanophotonics with many important applications such as photothermal cancer therapy, drug and gene delivery, nanochemistry, and photothermal imaging. This review paper aims to introduce this new field of non-plasmonic nanophotonics and discuss associated thermally-induced processes at the nanoscale.

All‐Dielectric Fabry–Pérot Cavity Design for Spectrally Selective Mid‐Infrared Absorption

“…[15,16,28,29] While these types of meta-absorbers yield ultrabroadband absorption of IR light, newly, multilayer metastructures based on a combination of dielectric and metallic films have been introduced as alternative platforms for the development of IR meta-absorbers. [30][31][32][33] In addition, many important applications such as photothermal cancer therapy, drug and gene delivery, nanochemistry, and photothermal imaging with purely dielectric thermonanophotonic applications could potentially be applications of this design [31,34] Based on a single or multiresonant response, most of the described meta-absorbers exhibit significant absorption spectra. However, the ever-increasing demand for efficient metaabsorbers with negligibly low losses has driven efforts to build all-dielectric systems that are free of internal damping and dissipative losses.…”