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Coatings, colloids, gels, gold, infrared spectra, nanofabrication, nanoparticles, self-assembled multicomponent plasmonic nanogels, broadband light absorption




Biomaterials | Biomedical Engineering and Bioengineering | Engineering | Nanoscience and Nanotechnology


Multicomponent plasmonic nanogels (PNGs) capable of broadband absorption of light in the 400-700 nm wavelength range were synthesized by the self-assembly of metal nanoparticles with wormlike surfactant micelles. Small angle x-ray scattering and rheological experiments suggest that the nanoparticles bridge micelle fragments to aid the formation a stable gel phase with exceptional color uniformity. Their optical absorbance could be robustly tuned by changing the nanoparticle type (Au/Ag), size, shape, and/or concentration. The PNGs have relatively low viscosity and are thermoreversible. Potential applications to the manufacturing of coatings and interfaces for solar energy harvesting and reconfigurable optical devices can be envisioned.


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