Disclosed is a double frame nanoparticle synthesis method including: forming a first platinum layer of a closed loop structure on an edge region of a 2-dimensional gold nanoparticle; removing a portion of the gold nanoparticle in an exposed inner region thereof free of the first platinum layer, thereby forming a single frame structure; growing a first gold thin film on the single frame structure; forming a second platinum layer on inner and outer edge regions of the first gold thin film; removing a portion of the first gold thin film in an exposed region thereof free of the second platinum layer, thereby forming a double frame structure, wherein the double frame structure has an inner frame of a closed loop structure, and an outer frame having a closed loop structure surrounding the inner frame, and partially connected to the inner frame; and forming a second gold thin film on a surface of the double frame structure.

A method for synthesis of PtNi smooth surface core/shell particles or Nano cages and porous nanocages from segregated nanoparticles.

A method for synthesis of PtNi smooth surface core/shell particles or Nano cages and porous nanocages from segregated nanoparticles.

Methods for forming samples of noble metal bipyramid nanocrystals having very low size and shape polydispersities from samples of mixed noble metal nanocrystals are provided. The samples include those comprising high purity, substantially monodisperse, plasmonic gold bipyramid nanocrystals. Also provided are methods of growing secondary twinned metal nanocrystals using the noble metal bipyramid nanocrystals as seed particles. Like the seed bipyramid nanocrystals from which they are grown, the secondary nanocrystals are twinned nanocrystals and may also be characterized by very low size and shape polydispersities. Secondary twinned nanocrystals grown by these methods include enlarged metal bipyramid nanocrystals and nanocrystals with anisotropic “dumbbell” shapes having a variety of tip geometries. Methods for using noble metal bipyramid nanocrystals as plasmonic heaters to heat reaction solutions via plasmonic-photothermal radiation-to-heat conversion are also provided.

The present disclosure provides an electrically conductive material, a printing ink and a method for manufacturing an electrically conductive structure. The electrically conductive material includes a plurality of electrically conductive metal nanoplates and electrically conductive metal nanoparticles filled in gaps between the plurality of the electrically conductive metal nanoplates.

The present disclosure provides an electrically conductive material, a printing ink and a method for manufacturing an electrically conductive structure. The electrically conductive material includes a plurality of electrically conductive metal nanoplates and electrically conductive metal nanoparticles filled in gaps between the plurality of the electrically conductive metal nanoplates.

Methods for producing silver nanostructures with improved dimensional control, yield, purity, monodispersity, and scale of synthesis.

The present invention relates to novel gold nanocrystals and nanocrystal shape distributions that have surfaces that are substantially free from organic impurities or films. Specifically, the surfaces are “clean” relative to the surfaces of gold nanoparticles made using chemical reduction processes that require organic reductants and/or surfactants to grow gold nanoparticles from gold ions in solution. The invention includes novel electrochemical manufacturing apparatuses and techniques for making the gold-based nanocrystals. The invention further includes pharmaceutical compositions thereof and the use of the gold nanocrystals or suspensions or colloids thereof for the treatment or prevention of diseases or conditions for which gold therapy is already known and more generally for conditions resulting from pathological cellular activation, such as inflammatory (including chronic inflammatory) conditions, autoimmune conditions, hypersensitivity reactions and/or cancerous diseases or conditions. In one embodiment, the condition is mediated by MIF (macrophage migration inhibiting factor).

A variety of polyhedral nanocages are provided having a hollow interior, ultrathin walls, and well-defined facets of metal atoms. The nanocages can include a variety of precious metals such as Pt, Au, Ru, Rh, or Ir. The metal atoms can take a face-centered cubic structure with {111} facets on the surface. The walls can be thin, sometimes less than 1 nm in thickness or only a few atomic layers in thickness. The nanocages can provide for efficient uses of valuable precious metals, among other things, in catalysis. For example, catalysts are provided exhibiting high mass activities in oxygen reduction reactions. Methods of making and methods of using the nanocages and catalysts are also provided.

The present invention provides a composition for antifreezing including a gold (Au) nanostructure in which at least a portion thereof is concave, thereby it is possible to increase a survival rate of cells due to having excellent effect of inhibiting ice recrystallization when cryopreservation of the cells, and maintain a texture of food even when using in the freezing of food.