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Beijing, China

The National Center for Nanoscience and Technology of China is a government initiated research institute with an emphasis on nanoscience and nanotechnology. Wikipedia.


Fang Z.,Peking University | Zhu X.,National Center for Nanosciences and Technology of China
Advanced Materials | Year: 2013

Plasmonics has developed into one of the rapidly growing research topics for nanophotonics. With advanced nanofabrication techniques, a broad variety of nanostructures can be designed and fabricated for plasmonic devices at nanoscale. Fundamental properties for both surface plasmon polaritons (SPP) and localized surface plasmons (LSP) arise a new insight and understanding for the electro-optical device investigations, such as plasmonic nanofocusing, low-loss plasmon waveguide and active plasmonic detectors for energy harvesting. Here, we review some typical functional plasmonic nanostructures and nanosmart devices emerging from our individual and collaborative research works. Plasmonics has developed into one of the rapidly growing research topics for nanophotonics. With advanced nanofabrication techniques, a broad variety of plasmonic nanostructures have been designed and fabricated. Combining the merits of both surface plasmons and graphene, the graphene photodetection can be greatly enhanced, leading to a new research area as graphene plasmonics. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Li Y.-F.,CAS Institute of High Energy Physics | Chen C.,CAS Institute of High Energy Physics | Chen C.,National Center for Nanosciences and Technology of China
Small | Year: 2011

It is important to obtain a better understanding of the uptake, trafficking, pharmacokinetics, clearance, and role of nanomaterials in biological systems, so that their possible undesirable effects can be avoided. A number of metallic or metal-containing nanomaterials, such as gold nanoparticles and nanorods, quantum dots, iron oxides nanoparticles, and endohedral metallofullerenes, have already been or will soon become very promising for biomedical applications. This review presents a summary of currently available data on the fate and toxicity of these metallic or metal-containing nanoparticles based on animal studies. Several issues regarding the nanotoxicity assessment and future directions on the study of the fate of these nanoparticles are also proposed. A summary of currently available data on the fate and toxicity of metallic or metal-containing nanoparticles, including gold, quantum dots, iron oxide and metallofullerenes, are presented mainly through animal studies. A better understanding of the uptake, trafficking, pharmacokinetics, clearance, and roles of nanomaterials in biological systems is important for avoiding their undesirable effects. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Patent
National Center for Nanosciences and Technology of China | Date: 2012-07-27

Provided is a method for treating single-walled carbon nanotube, comprising: (1) allowing single-walled carbon nanotubes to contact with a surfactant and a dispersant sequentially in the present of a solvent, to obtain highly dispersed single-walled carbon nanotubes in which the content of single dispersed single-walled carbon nanotubes is not lower than 50 wt %, wherein, the single-walled carbon nanotubes can be dispersed in the solvent, and the surfactant and dispersant can be dissolved in the solvent; (2) employing density gradient centrifugation to sort the highly dispersed single-walled carbon nanotubes obtained in step (1). This method can effectively separate single-walled carbon nanotubes with different structural properties.


Patent
National Center for Nanosciences and Technology of China | Date: 2010-12-03

A metal optical grayscale mask includes a layer of metal film which is deposited on transparent substrate, and different transparency pattern which is formed by laser writing on the surface of the metal film. The pattern is continuous, in type of array or random pattern. The grayscale is within 3.0 OD-0.05 OD. The thickness of the metal film is 5-100 nm. A manufacturing method of the metal optical grayscale mask includes that the selected transparent substrate is rinsed by the general semiconductor rinse process, the metal film is deposited on the transparent substrate then different transparency pattern is formed by laser writing on the surface of the metal film. The pattern is continuous, in type of array or the random pattern. The grayscale mask is low in price, antistatic electricity performance is good, the resolution can surpass optical diffraction limit. The manufacturing method is simple. There is a wide band application for micro-optical components and large-scale production of micro-electro-mechanical systems.


Patent
National Center for Nanosciences and Technology of China | Date: 2013-02-04

The present invention provides a preparation method of an antigen composition. The preparation method comprises the following steps: (1) obtaining a tumor antigen protein; (2) making the tumor antigen protein into contact with an immature dendritic cell; (3) inducing the immature dendritic cell in contact with the tumor antigen into a mature dendritic cell; and (4) separating a cell vesicle of the mature dendritic cell. The present invention further provides an antigen composition obtained through the preparation method and the application thereof in preparing a tumor vaccine.

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