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.

  • 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.

  • 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.