The disclosed embodiments provide a system that forms a three-dimensional (3D) nanostructure through 3D printing. During operation, the system performs a 3D printing operation that uses multiple passes of a scanning probe microscope (SPM) tip to deliver an ink to form the 3D nanostructure, wherein the ink includes both a positively charged polyelectrolyte (PE) and a negatively charged PE. While delivering the ink, the SPM tip is loaded with the ink and moved to a target location to deposit the ink. Finally, after the multiple passes are complete, the system cures the 3D nanostructure to remove excess positive or negative charges from the 3D nanostructure.

A method to synthesize radioactive nanoparticles includes the production of metallic and multimetallic nanoparticles in a single step by providing an aqueous solution of the metal precursor, and irradiating the aqueous solution thereby producing nanoparticles. The obtained nanoparticles include one or more radioactive isotopes of gold, such as .sup.198Au and .sup.199Au as well as radioisotopes of silver when the obtained nanoparticles are bimetallic. The aqueous solution is irradiated in a radiation field that includes neutrons and gamma rays. The radiation field may be provided by a nuclear reactor. The aqueous solution may include silver, and bimetallic nanoparticles may be produced. Duration of the irradiation time is selected to control the particle size distribution of the produced nanoparticles. The bimetallic nanoparticles can include core-shell nanoparticles and alloyed nanoparticles.

The present disclosure relates to a hybrid nanoparticle comprising a metallic core and at least one lipophilic dendron attached to the surface of the metallic core, and methods of producing such hybrid nanoparticles. The present disclosure also relates to films containing the hybrid nanoparticles described herein.

A manufacturing method of micro-nano structure antireflective coating layer and a display apparatus thereof are described. The method includes providing a substrate, forming a silicon oxide layer on the substrate, forming a graphene layer with a hexagonal honeycomb lattice on the silicon oxide layer, and forming a bottom surface of the antireflective coating layer in the nucleation points by serving the graphene layer as a growing base layer, wherein a diffusion length and an atomic mass of diffusion atoms of the antireflective coating layer are decreased with time by a gradient growing manner to form a upper surface of the antireflective coating layer.

Provided is a method of manufacturing a metal nano coil which is suitable for mass production and results in a lower manufacturing cost. The method of manufacturing a metal nano coil includes the steps of: forming, with tension applied to a core member composed of nanofiber of a polymer, a metal thin film on a surface of the core member to fabricate a metal-covered nanofiber; reducing the tension of the metal-covered nanofiber; and heating, with the tension reduced, the metal-covered nanofiber to at or above a boiling point or a thermal decomposition temperature of the polymer and at or below the melting point of the metal thin film to vaporize the core member and shrink the metal thin film into a coil form, so that a hollow metal nano coil is produced.