All‐Dielectric Nanostructures with a Thermoresponsible Dynamic Polymer Shell

Abstract

We suggest a new strategy for creating stimuliresponsive bio-integrated optical nanostructures based on Mieresonant silicon nanoparticles covered by an ensemble of similarity negatively charged polyelectrolytes (heparin and sodium polystyrene sulfonate). The dynamic tuning of the nanostructures optical response is due to light-induced heating of the nanoparticles and swelling of the polyelectrolyte shell. The resulting hydrophilic/hydrophobic transitions significantly change the shell thickness and reversible shift of the scattering spectra for individual nanoparticles up to 60 nm. Our findings bring novel opportunities for the application of smart nanomaterials in nanomedicine and bio-integrated nanophotonics.

Light-Induced Color Switching of Single Metal–Organic Framework Nanocrystals

“…It is important that 10% changes in n and 16 time changes in k of HKUST-1 nanocrystals correlate with a record of 30–100% of light-induced modulation of the optical response of competing inorganic (VO 2 , Si, SiO 2 , GaAs, etc.) material. , The results of the work demonstrate the promising nature of dynamic MOFs for nonlinear optics and expand the library of chemically synthesized hybrid materials with light-controlled optical properties. − …”

“…43,44 The results of the work demonstrate the promising nature of dynamic MOFs for nonlinear optics and expand the library of chemically synthesized hybrid materials with light-controlled optical properties. 45…”

Multifunctional and Transformative Metaphotonics with Emerging Materials

“…On the other hand, for many applications of Mie-resonant nanoparticles, it is important to achieve tunability and stimuli-responsive functionality creating biointegrated optical nanostructures. With this motivation in mind, Nikitina et al 306 covered silicon nanoparticles by an ensemble of similarity negatively charged polyelectrolytes (heparin and sodium polystyrenesulfonate). They created a thermoresponsible system based on Si nanoparticles and a shell produced by poly(diallyldimethylammonium chloride) (PDADMAC) and poly(sodium 4-styrenesulfonate) (PSS) assembly.…”

“…With this motivation in mind, Nikitina et al. covered silicon nanoparticles by an ensemble of similarity negatively charged polyelectrolytes (heparin and sodium polystyrenesulfonate). They created a thermoresponsible system based on Si nanoparticles and a shell produced by poly­(diallyldimethylammonium chloride) (PDADMAC) and poly­(sodium 4-styrenesulfonate) (PSS) assembly.…”

Single Particle Color Switching by Laser-Induced Deformation of Liquid Metal-derived Microcapsules

“…They show tunable emission, diffraction, absorption properties and can be applied as compact “smart” sensors, switchers, and inks . The library of stimuli-responsive optical nanomaterials is represented by photonic crystals (opal, inverse opal, and similar structures), color-switching nanostructures, liquid crystals, functionalized polymer or metal nanoparticles, − and plasmonic nanostructures based on noble metals (Au and Ag) . The latter demonstrate a high potential for controlled catalytic capabilities, chemical and biological sensing, , and may be utilized as plasmonic inks.…”