Friday, February 26, 2010

Carbon Nanotube NanoMesh Developed by Seldon Technologies for Electromagnetic Radiation Shielding and Manipulation

Seldon Technologies LLC (Windsor, VT) has disclosed a NanoMesh material for altering electromagnetic radiation incident on the material. The material is made of carbon nanotubes having a length (L) that meets the wavelength of the electromagnetic radiation incident on the material. Also revealed are methods of altering electromagnetic radiation, including mitigating, intensifying, or absorbing and re-transmitting electromagnetic radiation using the disclosed material. Inventors Christopher H Cooper, William K. Cooper  and Alan G Cummings describe how to make the materials in U.S. Patent Application 20100044584.

The carbon nanotube is fabricated into a nanostructured or mesh form (NanoMesh) as an EMI shielding membrane. A mesh of carbon nanotubes absorbs electromagnetic radiation at varying wavelengths and frequencies, and will convert this absorbed energy into other forms of energy. As an example, it could absorb visible light and convert the absorbed energy into electricity making an attractive solar cell. Alternatively, it could absorb visible light in one frequency and transfer it to another frequency altogether.

Carbon nanotube mesh (NanoMesh) is a novel material that is composed mostly of carbon nanotubes (either single or multiwalled) that are held together by van der Waals forces, other proximity effects, and mechanical means. It also may have proprietary modifications done to fuse the material together, glue carbon nanotubes to each other, or other processes to make the final material stronger or more EMI shielding.

Unlike Nanomesh, which implies coupling of nanotubes to form a three-dimensional structure, a nanostructured material generally implies carbon nanotubes that are decoupled or not necessarily in contact with one another. In certain embodiments, a nanostructured material may be used instead of a nanomesh material. 

The incorporation of NanoMesh also makes a material highly strong, durable, and chemically resistant. Thus, materials incorporating the NanoMesh will also be able to be cast extremely thin and still maintain their durability. 

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