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.
T. Cong, S. N. Wani, P. A. Paynter, and R. Sureshkumar. 2011. "Structure and Optical Properties of Self-Assembled Multicomponent Plasmonic Nanogels", Applied Physics Letters, 99 (4), 043112 (3 pp.).