nanocomposite

Nanocomposite is a matrix to which nanoparticles have been added to improve a particular property of a material. It is either one, two or three dimensional, and smaller than 1000nanometers. Nanocomposites have different properties, such as thermal, optical, mechanical, catalytic or electrochemical. There are three kinds of matrix, 1- Polymer-matrix, 2- Meta;-matrix, 3- Ceramic-matrix.

Nanocomposites can be used in a variety of applications, including making the material of an object stronger and lighter, such as tennis rackets, spacecraft, windmill blades, plastic bottles and car parts.

  • Applications of Graphene

    Application of Graphene

    In order to get introduced to Graphene, a good point of start would be Graphite. Graphite is a naturally-occurring form of crystalline carbon. It is a native element mineral found in metamorphic and igneous rocks. Regarding its composition, Graphite is a stack of carbon-atom layers.

  • Hannover Messe: Triple treatment for heat-exchangers

    New nano-coatings have an anti-adhesive, anti-corrosive and antimicrobial effect. Source: Ollmann

    INM - Leibniz Institute for New Materials is introducing new nano-coatings that reduce the effort required for cleaning heat exchangers as well as their corrosion. In these new coatings, the research scientists combine antiadhesive, anticorrosive and, on demand, also antimicrobial properties.

    When processing milk and juice, the food industry is using heat exchangers in numerous steps throughout the process. To have no risk to the consumers, heat exchangers have to be free from microbes. Especially in the numerous grooves and recesses of the heat exchanger, persistent biofilms can remain stuck. As a result, heat exchangers must be cleaned at regular intervals using aggressive chemicals.

  • Ladungsdichtewellen trotz Supraleitung möglich

    Ladungsdichtewellen trotz Supraleitung möglich | Mit Hilfe der EELS-Elektronenspektroskopie lassen sich im Rasterelektronenmikroskop die Positionen der einzelnen Atome in der Heterostruktur kartieren: Die supraleitenden YBaCuO-Regionen sind an Yttrium (Blau) und Kupfer (pink) erkennbar, während in der ferromagnetischen Schicht Mangan (grün) und Lanthan (rot) eingebaut ist. Abbildung: MPI Stuttgart

    Physiker haben an BESSY II des Helmholtz-Zentrum Berlin (HZB) einen Weg gefunden, um die Supraleitung zu beeinflussen. Sie haben ein Materialsystem aus dünnen ferromagnetischen und supraleitenden Schichten untersucht. An den Grenzflächen bildeten sich Ladungsdichtewellen aus, die erstaunlich weit in die supraleitende Schicht hineinreichen. Der supraleitende Effekt konnte dadurch stabilisiert werden. Die Ergebnisse sind nun in Nature Materials publiziert.

  • Lighter than Aluminum and Stronger than Steel: Innovative Materials with Carbon Fibres made from Algae

    e-scooter step made of a composite material integrating granite and carbon fibers made from algae. Image: Andreas Battenberg / TUM

    In combination with granite or other types of hard rock, carbon fibres make possible all-new construction and building materials. Theoretical calculations show: If the carbon fibres are produced from algae oil, production of the innovative materials extracts more carbon dioxide from the atmosphere than the process sets free. A research project spearheaded by the Technical University of Munich (TUM) is to further advance these technologies.

  • Manipulating superconducting plasma waves with terahertz light

    Manipulating superconducting plasma waves with terahertz light | Josephson plasma wave in a layered superconductor, parametrically amplified through a strong terahertz light pulse. Image: J.M. Harms/MPI for the Structure and Dynamics of Matter

    Terahertz illumination amplifies Josephson plasma waves in high temperature superconductors, potentially paving the way for stabilizing fluctuating superconductivity

    Most systems in nature are inherently nonlinear, meaning that their response to any external excitation is not proportional to the strength of the applied stimulus. Nonlinearities are observed, for example, in macroscopic phenomena such as the flow of fluids like water and air or of currents in electronic circuits. Manipulating the nonlinear behavior is therefore inherently interesting for achieving control over several processes. An international team of researchers led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter at CFEL in Hamburg utilized the nonlinear interaction between a terahertz light field and a superconducting plasma wave in a high temperature cuprate superconductor to amplify the latter. This resulted in a more coherent superconductor, which is less susceptible to thermal fluctuations. Due to the non-dissipative superconducting nature of the plasma wave, the study opens up new avenues for “plasmonics”, a field of science utilizing plasma waves for transmitting information. These findings are reported in the journal Nature Physics.

  • Open access infrastructure for a pilot line of nano particle and nano-composites

    “What opportunities does nanotechnology provide in general, offer nanoparticles for my products and processes?” So far, this question cannot be answered easily. Preparation and modification of nanoparticles and their further processing requires special technical infrastructure and complex knowledge. For small and medium businesses the construction of this infrastructure “just on luck” is often not worth it. Even large companies shy away from the risks. As a result many good ideas just stay in the drawer.

  • Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

    Extruded spiral made of polymer-coated silicon-nanosheets glowing in UV light. Photo: Tobias Helbich / TUM

    Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

  • Researchers Develop a Solid Material with Mobile Particles that React to the Environment

    At high temperatures (left) particles move freely in the droplets and lend the material a ruby red color; they agglomerate at lower temperatures (right) and change the material’s color to grey-violet. Copyright: INM; free within this press release

    Inside most materials, little is moving. But a new “active nanocomposite” is teeming with motion: small particles connect or separate, thus changing the color of the entire material. It was made by scientists of the Leibniz Institute for New Materials in Saarbrücken in an attempt to lend materials more dynamics. The transparent material can “answer” temperature changes or, in the future, the presence of chemical substances and toxins with a color change. The researchers want to create packaging films that change their color when food spoils, for example.