Carbon nanotubes

Carbon nanotubes (CNT) are molecular tubes made of carbon, with a diameter between 1nm and 50nm, and various lengths. There are single wall carbon nanotubes (SWCNT), double wall carbon nanotubes (DWCNT) and multiwall carbon nanotubes (MWCNT).

Carbon nanotubes can for example be used for functionalization of AFM tips, as additives in nanocomposites, and as nanowires in sensor applications.

  • A signal boost for molecular microscopy

    A signal boost for molecular microscopy | Schematic illustration of the experiment. Graphic: MPQ, Laser Spectroscopy Division

    Cavity-enhanced Raman-scattering reveals information on structure and properties of carbon nanotubes. The inherently weak signals are amplified by using special micro cavities as resonator, giving a general boost to Raman spectroscopy as a whole.

  • Block Copolymer Micellization as a Protection Strategy for DNA Origami

    Polyplex Abstract. cfaed

    Scientists from the Center for Advancing Electronics Dresden / TU Dresden and the University of Tokyo led by Dr. Thorsten-Lars Schmidt (cfaed) developed a method to protect DNA origami structures from decomposition in biological media. This protection enables future applications in nanomedicine or cell biology. The precise positioning of individual molecules with respect to one another is fundamentally challenging. DNA Nanotechnology enables the synthesis of nanometer-sized objects with programmable shapes out of many chemically produced DNA fragments.

  • Carbon nanotubes - The basics

    Single-walled-carbon nanotubes and multi-walled-carbon nanotubes molecular structure

    Till 1980 only three forms of carbon were known, namely diamond, graphite, and amorphous carbon. Nowadays a whole family of other forms of carbon is known. The hollow, cage like buckminsterfullerene molecule – also known as the buckyball, or the C60 fullerene, was the first to be discovered. These days there are much more forms of fullerenes, and also a widespread family of linear molecules, carbon nanotubes known.

  • Carbon Nanotubes Turn Electrical Current into Light-emitting Quasi-particles

    Artistic rendering of a light-emitting transistor with carbon nanotubes between two mirrors for electrical generation of polaritons. Image credit: Dr Yuriy Zakharko, co-author

    Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University (Germany) and the University of St Andrews (Scotland) used light-emitting and extremely stable transistors to reach strong light-matter coupling and create exciton-polaritons. These particles may pave the way for new light sources, so-called electrically pumped polariton lasers, that could be manufactured with carbon nanotubes.

  • Fine Felted Nanotubes: CAU Research Team Develops New Composite Material Made of Carbon Nanotubes

    In this new process, the tiny, thread-like carbon nanotubes (CNTs) arrange themselves - almost like felting - to form a stable, tear-resistant layer. Fabian Schütt

    Due to their unique properties, carbon nanotubes would be ideal for numerous applications, from ultra-lightweight batteries to high-performance plastics, right through to medical implants. But they either cannot be combined adequately with other materials, or they then lose their beneficial properties. Scientists from Kiel University and the University of Trento have now developed an alternative combining method, so that they retain their characteristic properties. As such, they "felt" the thread-like tubes into a stable 3D network that is able to withstand extreme forces. The research results have been published in the journal Nature Communications.

  • How nanotechnology is going to shape the electronics industry

    How nanotechnology is going to shape the electronics industry

     

    Electronics industry is one of the most interesting industry sector - if not the most interesting - for the application of nanotechnology. Already in present time, nanotechnology has already been introduced to the electronic industry. The critical length scale of the integrated circuits are already in nano scale. In this particular article few of the most popular product segments will be discussed.

  • Launch of project ECO COM'BAT: Sustainable energy storage with high-voltage batteries

    Efficient lithium-ion pouch cell with the base materials. © K. Selsam-Geißler, Fraunhofer ISC

    Cruising range is one of the greatest challenges for the rapid implementation of electromobility in Europe. Ten partners from industry and research organizations now join forces in the EU funded project ECO COM'BAT, coordinated by the Fraunhofer Project Group Materials Recycling and Resource Strategies, part of the Fraunhofer Institute for Silicate Research ISC, to develop the next generation of lithium-ion batteries – the high-voltage battery. Better performance is not the only goal for the new battery. Compared to conventional batteries the new type should be more powerful and even more sustainable due to the substitution of conventional, often expensive, rare or even critical materials.

  • Natural Nanofibres Made of Cellulose

    Through contact with water, the seed of Neopallasia pectinata from the family of composite plants forms a slimy sheath. The white cellulose fibres anchor it to the seed surface. © Kreitschitz

     

    The seeds of some plants such as basil, watercress or plantain form a mucous envelope as soon as they come into contact with water. This cover consists of cellulose in particular, which is an important structural component of the primary cell wall of green plants, and swelling pectins, plant polysaccharides. In order to be able to investigate its physical properties, a research team from the Zoological Institute at Kiel University (CAU) used a special drying method, which gently removes the water from the cellulosic mucous sheath. The team discovered that this method can produce extremely strong nanofibres from natural cellulose. In future, they could be especially interesting for applications in biomedicine. The team’s results recently appeared as the cover story in the journal Applied Materials & Interfaces.

  • Ten daily products with nanotechnology

    Nanotechnology defined as the science, engineering, and technology conducted at the nanoscale, which is about 1 to 100 nano meters has been around for something over 40 years now. Still when I talk about nanotechnology, general people perceive it as a technology of the future. At times I still get questions like “what is nanotechnology?” On this trying to explain on basis of the given definition mostly leaves a vague image of what nanotechnology really is. In my experience, I have always found it more effective to give examples of nanotechnology. This even more so when these are in their daily lives. That is where I would be dedicating this article towards. Here are the ten daily life products with nanotechnology.

  • Tests show no nanotubes released during utilisation of nanoaugmented materials

    OCSiAl’s core product - TUBALL that contains more than 80% of single wall carbon nanotubes © OCSiAl

    Recent research on the most novel additive – single wall carbon nanotubes – has demonstrated an impressive result: in contrast to conventional additives, no protruding particles appear and no free-standing particles are released when materials containing these nanotubes are being mechanically stressed during simulation of their typical use. Furthermore, nanotube-formulated materials release significantly fewer micro-size or ultrafine particles, demonstrating their high strength and cohesion improvement.

  • Was den Spin zum Umklappen bringt

    Was den Spin zum Umklappen bringt | Die mechanischen Eigenschaften der Kohlenstoffnanoröhre (schwarz) bestimmen das Umklappen des Spins (orange) eines Moleküls (grün und rot).

    Der Einstein-de Haas Effekt zeigt, dass der Magnetismus auf den Drehimpuls von Elektronen zurückgeht, und gilt als makroskopischer Nachweis des Elektronenspins. Forscher am Karlsruher Institut für Technologie (KIT) und am Institut Néel des CNRS Grenoble haben diesen Effekt nun erstmals auf der Ebene eines einzelnen Spins untersucht und als „Quanten Einstein-de Haas Effekt“ neu formuliert. Über ihre Arbeit berichten sie in der Zeitschrift Nature Communications (DOI: 10.1038/ncomms11443).

  • Zwei Tage im Zeichen der Nanotechnologie – Mehr als 700 Gäste

    Neue Materialien wie Fullerene (d) oder Carbon-Nanotubes (h) sind Nanotechnologie und werden schon jetzt in vielen Gebieten eingesetzt.

    7. NRW Nano-Konferenz in Münster: Nordrhein-Westfalen führender Standort für Nanowissenschaften und Nanosicherheit. Erstmals ist die Stadt Münster am 7. und 8. Dezember 2016 Schauplatz der hochkarätigen NRW Nano-Konferenz. Die Veranstaltung im Messe- und Congress Centrum der Halle Münsterland ist das zentrale Event für die Nanotechnologie in Deutschland und ein wichtiges Instrument zur Innovationssteigerung in NRW. Wissenschaftsministerin Svenja Schulze sagt mit Blick auf die Konferenz: „Nanotechnologie kann in zentralen Zukunftsfeldern wie etwa Medizin oder Energieeffizienz für echten Fortschritt sorgen. Münster und Nordrhein-Westfalen haben sich längst als international führender Standort für Nanowissenschaften und Nanosicherheit etabliert. Diese Position wird mit der Konferenz weiter gestärkt ausgebaut.“