Carbon Nanotubes tagged posts

A carbon nanobelt, represented as a ball-and stick model and space-filing model. Carbon atoms are colored in orange and gray and hydrogen atoms are colored in white.
Credit: ITbM, Nagoya University

Synthesis of a carbon nanobelt with potential applications in nanotechnology. Chemists have tried to synthesize carbon nanobelts for more than 60 years, but none have succeeded until now. A Nagoya University team reported the first organic synthesis of a carbon nanobelt in Science. Carbon nanobelts are expected to serve as a useful template for building carbon nanotubes and open a new field of nanocarbon science.

The new nanobelt, measuring 0...

This is an artist’s impression of carbon nanotubes wrapped in polymers with thiol side chains (yellow spheres) and assembled on gold electrodes.
Credit: Arjen Kamp

Carbon nanotubes can be used to make very small electronic devices, but they are difficult to handle. University of Groningen scientists, together with colleagues from the University of Wuppertal and IBM Zurich, have developed a method to select semiconducting nanotubes from a solution and make them self-assemble on a circuit of gold electrodes. University of Groningen Professor Maria Antonietta Loi designed polymers which wrap themselves around specific carbon nanotubes in a solution of mixed tubes. Thiol side chains on the polymer bind the tubes to the gold electrodes, creating the resultant transistor.

‘In our previous work, ...

1. Graphene foam invented at Rice University is reinforced with carbon nanotubes. It can hold thousands of times its own weight and still bounce back to its full height. Credit: Tour Group/Rice University
2. Graphene foam invented at Rice University is reinforced with carbon nanotubes. It can hold thousands of times its own weight and still bounce back to its full height. Credit: Tour Group
3. A microscope image of rebar graphene shows carbon shells, multiwalled carbon nanotubes and two-dimensional graphene. Credit: Tour Group

A chunk of conductive graphene foam reinforced by carbon nanotubes can support more than 3000X its own weight and easily bounce back to its original height, according to Rice University scientists...

As soon as it comes out of the printing nozzle, the solvent evaporates and the ink solidifies. It takes the form of filaments slightly bigger than a hair. The manufacturing work can then begin. Credit: Polytechnique Montréal

Carbon nanotubes have made headlines in scientific journals for a long time, as has 3D printing. But when both combine with the right polymer, in this case a thermoplastic, something special occurs: electrical conductivity increases and makes it possible to monitor liquids in real time. This is a huge success for Polytechnique Montréal. In practical terms, the result of this research looks like a cloth; but as soon as a liquid comes into contact with it, said cloth is able to identify its nature. In this case, it is ethanol, but it might have been another liquid...