Abstract: Optical inks suitable for 3D printing fabrication of gradient refractive index (GRIN) optical components are composed a monomer matrix material doped with ligand-functionalized nanoparticles, wherein the monomer has a viscosity less than 20 cPoise and is UV curable to form a solid polymer. The matrix material doped with the ligand-functionalized nanoparticles has a transmittance of at least 90% in a predetermined optical wavelength range, wherein the ligand functionalized nanoparticles have a size less than 100 nm, are loaded in the monomer matrix material at a volume percent of at least 2%, and alter an index of refraction of the monomer matrix by at least 0.02. The ligand-functionalized nanoparticles have a plurality of ligands attached to a nanoparticle core surface with an anchor functional group and terminated with a buoy functional group that are reactive, non-reactive, or combinations thereof. In some embodiments the ligands have a length less than 1.

Abstract: Disclosed herein are embodiments of gold nanoparticles and methods of making and using the gold nanoparticles. The disclosed gold nanoparticles have core sizes and polydispersities controlled by the methods of making the gold nanoparticles. In some embodiments, the methods of making the gold nanoparticles can concern using flow reactors and reaction conditions controlled to make gold nanoparticles having a desired core size. The gold nanoparticles disclosed herein also comprise various ligands that can be used to facilitate the use of the gold nanoparticles in a variety of applications.

Abstract: Disclosed herein are embodiments of gold nanoparticles and methods of making and using the gold nanoparticles. The disclosed gold nanoparticles have core sizes and polydispersities controlled by the methods of making the gold nanoparticles. In some embodiments, the methods of making the gold nanoparticles can concern using flow reactors and reaction conditions controlled to make gold nanoparticles having a desired core size. The gold nanoparticles disclosed herein also comprise various ligands that can be used to facilitate the use of the gold nanoparticles in a variety of applications.

Abstract: Disclosed herein are embodiments of gold nanoparticles and methods of making and using the gold nanoparticles. The disclosed gold nanoparticles have core sizes and polydispersities controlled by the methods of making the gold nanoparticles. In some embodiments, the methods of making the gold nanoparticles can concern using flow reactors and reaction conditions controlled to make gold nanoparticles having a desired core size. The gold nanoparticles disclosed herein also comprise various ligands that can be used to facilitate the use of the gold nanoparticles in a variety of applications.