Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53521#.VMdF_CzQrzE Author(s)    Rami Regueira 1,2 , Ran Yosef Suckeveriene 2,3 , Irena Brook 1,2 , Guy Mechrez 2 , Roza Tchoudakov 2 , Moshe Narkis 2*   Affiliation(s) 1 Interdepartmental Program in Polymer Engineering, Technion-IIT, Haifa, Israel . 2 Department of Chemical Engineering, Technion-IIT, Haifa, Israel . 3 Department of Water Industries Engineering, Kinneret College in the Jordan Valley, Zemach, Israel . ABSTRACT This paper describes a study on electrical resistivity under loading of polyaniline (PANI)/graphene nanocomposite powders and compacts. The composites were prepared by an in-situ interfacial dynamic inverse emulsion polymerization technique under sonication of aniline in the presence of graphene sheets in chloroform. During polymerization the graphene nanoplatelets are coated with PANI and are well dispersed both in the polymer...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=47442#.VFnEC2fHRK0 Author(s) Halina V. Grushevskaya , George Krylov Affiliation(s) Physics Department, Belarusian State University, Minsk, Belarus . Physics Department, Belarusian State University, Minsk, Belarus . ABSTRACT The quantum field theory approach has been proposed for the description of graphene electronic properties. It generalizes massless Dirac fermion model and is based on the Dirac-Hartree-Fock self-consistent field approximation and assumption on antiferromagnetic ordering of graphene lattice. The developed approach allows asymmetric charged carriers in single layer graphene with partially degenerated Dirac cones. KEYWORDS Graphene , Asymmetric Charged Carriers , Dirac-Hartree-Fock Self-Consistent Field Approximation Cite this paper Grushevskaya, H. and Krylov, G. (2014) Quantu...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50635#.VEcef1fHRK0 Author(s) Shuhui Zhang 1 , Wen Xu 1,2* , Francois M. Peeters 3 Affiliation(s) 1 Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China . 2 Department of Physics, Yunnan University, Kunming, China . 3 Department of Physics, University of Antwerp, Antwerpen, Belgium . ABSTRACT We present a theoretical study of the acoustic properties of graphene-semiconductor layered structures. The transmission coefficient for longitudinal acoustic waves through the structure is evaluated by using the usual transfer matrix method. We find that the finite thickness of the ...