Tag: Carbon Nanotubes functionalization

Carbon nanotubes are playing an important role in the field of nanotechnology. Single walled carbon nanotubes and multiwalled carbon nanotubes are interrelated to each other

Single-wall carbon nanotubes (SWCNTs) is considered as formation of rolling of a single layer of graphite (called a graphene layer) into a seamless cylinder. A multiwall carbon nanotube (MWCNT) can similarly be considered to be a coaxial assembly of cylinders of SWCNTs. The separation between tubes is about equal to that between the layers in natural graphite. So nanotubes are one-dimensional objects with a well-defined direction along the nanotube axis that is analogous to the in-plane directions of graphite.”

Singlewalled carbon nanotubes, SWCNT, Single walled nanotubes at reinste are produced by HiPCO Method. It is in form of dry powder of Nanotubes bundled in ropes with diameter ~ 0.8 – 1.2 nm and length ~ 100- 1000 nm. SWNTs are an important variety of carbon nanotube because most of their properties change significantly with the (n,m) values, and this dependence is non-monotonic In particular, their band gap can vary from zero to about 2 eV and their electrical conductivity can show metallic or semiconducting behavior.

The researchers of Massachusetts Institute of Technology (MIT) have uncovered a new phenomenon of carbon nanotubes. They found that carbon nanotubes discharge powerful waves of electricity under certain circumstances. MIT team named it as thermopower waves hp pb995a battery. They are pinning their hope on thermopower waves to produce electricity to be utilized in small electrical appliances or maybe in large-scale applications too. This project was funded by the Air Force Office of Scientific Research, and the US National Science Foundation (NSF).

This discharge of electricity from carbon nanotubes is a very rare occurrence. Traditionally we derive electricity from water, sun, wind, coal or heat produced by burning of fossil fuels. The thermopower wave, “opens up a new area of energy research, which is rare,” said Michael Stranowho is MIT’s Charles and Hilda Roddey associate professor of Chemical Engineering. His work was published in scientific journal Nature Materials.

Carbon Nanotubes are submicroscopic structures. They are just billionths of a meter in diameter. Carbon nanotubes resemble honeycombs. For the past twenty years scientists are focusing their energies on carbon nanotubes, graphene sheets and buckeyballs lenovo 3000 v100 battery. They find these three most promising for clean and green energy research. These three substances can be valuable for the medicine, nanotechnology, geoengineering, biology, and for the electronics industry.

Researchers associated with this project find the whole phenomenon quite unusual. They have observed that as the moving pulses of heat pass through the carbon naotubes, electrons also travel along. This movement of electrons is responsible for generation of electric current. Strano says, “There’s something else happening here. We call it electron entrainment since part of the current appears to scale with wave velocity.”