By stacking layers of ceramic cloth with interlocking nanotubes in between, a team of researchers has created new composites with significantly improved properties compared to traditional materials. The "nanotube sandwiches," which are described in the May 7 online edition of the journal Nature Materials, could find use in a wide array of structural applications.
"Nanotubes are a very versatile material with absolutely fascinating physical properties, all the way from ballistic conduction to really interesting mechanical behavior," says Pulickel Ajayan, the Henry Burlage Professor of Materials Science and Engineering at Rensselaer and a lead author of the paper, along with colleagues at the University of Hawaii at Manoa. Some fundamental issues, however, have kept researchers from realizing the full potential of nanotubes, particularly when combining them with other materials to make composites. The interface between the materials is not as strong as one might expect, Ajayan notes, because it is difficult to disperse nanotubes and to align them in an orderly way.
Ajayan and his colleagues have pioneered a process to help overcome these difficulties, and they are putting it to use in a wide variety of applications. For the current project, the researchers are applying the process to a new area: reinforced composite fabrics made from woven ceramic fibers. These materials have been used for decades in structural applications, but they tend to perform poorly in terms of "through-thickness," or the ability of a material to respond to forces applied perpendicular to the fabric-stacking direction, according to Ajayan.
Tiffany Lohwater | EurekAlert!
Gelatine instead of forearm
19.04.2017 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt
Computers create recipe for two new magnetic materials
18.04.2017 | Duke University
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment...
Glaciers might seem rather inhospitable environments. However, they are home to a diverse and vibrant microbial community. It’s becoming increasingly clear that they play a bigger role in the carbon cycle than previously thought.
A new study, now published in the journal Nature Geoscience, shows how microbial communities in melting glaciers contribute to the Earth’s carbon cycle, a...
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21.04.2017 | Physics and Astronomy