The Experts below are selected from a list of 243 Experts worldwide ranked by ideXlab platform

Xavier Moya - One of the best experts on this subject based on the ideXlab platform.

  • magnetoelectric cofe2o4 Polyvinylidene Fluoride electrospun nanofibres
    Nanoscale, 2015
    Co-Authors: R. Gonçalves, N D Mathur, P Martins, Massimo Ghidini, Xavier Moya, Vitor Sencadas, Gabriela Botelho, S Lancerosmendez
    Abstract:

    Magnetoelectric 0–1 composites comprising CoFe2O4 (CFO) nanoparticles in a Polyvinylidene Fluoride (PVDF) polymer-fibre matrix have been prepared by electrospinning. The average diameter of the electrospun composite fibres is ∼325 nm, independent of the nanoparticle content, and the amount of the crystalline polar β phase is strongly enhanced when compared to pure PVDF polymer fibres. The piezoelectric response of these electroactive nanofibres is modified by an applied magnetic field, thus evidencing the magnetoelectric character of the CFO/PVDF 0–1 composites.

  • Magnetoelectric CoFe2O4/Polyvinylidene Fluoride electrospun nanofibres.
    Nanoscale, 2015
    Co-Authors: R. Gonçalves, N D Mathur, Massimo Ghidini, Xavier Moya, Vitor Sencadas, Gabriela Botelho, Pedro Libânio Abreu Martins, S. Lanceros-méndez
    Abstract:

    Magnetoelectric 0–1 composites comprising CoFe2O4 (CFO) nanoparticles in a Polyvinylidene Fluoride (PVDF) polymer-fibre matrix have been prepared by electrospinning. The average diameter of the electrospun composite fibres is ∼325 nm, independent of the nanoparticle content, and the amount of the crystalline polar β phase is strongly enhanced when compared to pure PVDF polymer fibres. The piezoelectric response of these electroactive nanofibres is modified by an applied magnetic field, thus evidencing the magnetoelectric character of the CFO/PVDF 0–1 composites.

Massimo Ghidini - One of the best experts on this subject based on the ideXlab platform.

  • magnetoelectric cofe2o4 Polyvinylidene Fluoride electrospun nanofibres
    Nanoscale, 2015
    Co-Authors: R. Gonçalves, N D Mathur, P Martins, Massimo Ghidini, Xavier Moya, Vitor Sencadas, Gabriela Botelho, S Lancerosmendez
    Abstract:

    Magnetoelectric 0–1 composites comprising CoFe2O4 (CFO) nanoparticles in a Polyvinylidene Fluoride (PVDF) polymer-fibre matrix have been prepared by electrospinning. The average diameter of the electrospun composite fibres is ∼325 nm, independent of the nanoparticle content, and the amount of the crystalline polar β phase is strongly enhanced when compared to pure PVDF polymer fibres. The piezoelectric response of these electroactive nanofibres is modified by an applied magnetic field, thus evidencing the magnetoelectric character of the CFO/PVDF 0–1 composites.

  • Magnetoelectric CoFe2O4/Polyvinylidene Fluoride electrospun nanofibres.
    Nanoscale, 2015
    Co-Authors: R. Gonçalves, N D Mathur, Massimo Ghidini, Xavier Moya, Vitor Sencadas, Gabriela Botelho, Pedro Libânio Abreu Martins, S. Lanceros-méndez
    Abstract:

    Magnetoelectric 0–1 composites comprising CoFe2O4 (CFO) nanoparticles in a Polyvinylidene Fluoride (PVDF) polymer-fibre matrix have been prepared by electrospinning. The average diameter of the electrospun composite fibres is ∼325 nm, independent of the nanoparticle content, and the amount of the crystalline polar β phase is strongly enhanced when compared to pure PVDF polymer fibres. The piezoelectric response of these electroactive nanofibres is modified by an applied magnetic field, thus evidencing the magnetoelectric character of the CFO/PVDF 0–1 composites.

S Lancerosmendez - One of the best experts on this subject based on the ideXlab platform.

  • magnetoelectric cofe2o4 Polyvinylidene Fluoride electrospun nanofibres
    Nanoscale, 2015
    Co-Authors: R. Gonçalves, N D Mathur, P Martins, Massimo Ghidini, Xavier Moya, Vitor Sencadas, Gabriela Botelho, S Lancerosmendez
    Abstract:

    Magnetoelectric 0–1 composites comprising CoFe2O4 (CFO) nanoparticles in a Polyvinylidene Fluoride (PVDF) polymer-fibre matrix have been prepared by electrospinning. The average diameter of the electrospun composite fibres is ∼325 nm, independent of the nanoparticle content, and the amount of the crystalline polar β phase is strongly enhanced when compared to pure PVDF polymer fibres. The piezoelectric response of these electroactive nanofibres is modified by an applied magnetic field, thus evidencing the magnetoelectric character of the CFO/PVDF 0–1 composites.

R. Gonçalves - One of the best experts on this subject based on the ideXlab platform.

  • magnetoelectric cofe2o4 Polyvinylidene Fluoride electrospun nanofibres
    Nanoscale, 2015
    Co-Authors: R. Gonçalves, N D Mathur, P Martins, Massimo Ghidini, Xavier Moya, Vitor Sencadas, Gabriela Botelho, S Lancerosmendez
    Abstract:

    Magnetoelectric 0–1 composites comprising CoFe2O4 (CFO) nanoparticles in a Polyvinylidene Fluoride (PVDF) polymer-fibre matrix have been prepared by electrospinning. The average diameter of the electrospun composite fibres is ∼325 nm, independent of the nanoparticle content, and the amount of the crystalline polar β phase is strongly enhanced when compared to pure PVDF polymer fibres. The piezoelectric response of these electroactive nanofibres is modified by an applied magnetic field, thus evidencing the magnetoelectric character of the CFO/PVDF 0–1 composites.

  • Magnetoelectric CoFe2O4/Polyvinylidene Fluoride electrospun nanofibres.
    Nanoscale, 2015
    Co-Authors: R. Gonçalves, N D Mathur, Massimo Ghidini, Xavier Moya, Vitor Sencadas, Gabriela Botelho, Pedro Libânio Abreu Martins, S. Lanceros-méndez
    Abstract:

    Magnetoelectric 0–1 composites comprising CoFe2O4 (CFO) nanoparticles in a Polyvinylidene Fluoride (PVDF) polymer-fibre matrix have been prepared by electrospinning. The average diameter of the electrospun composite fibres is ∼325 nm, independent of the nanoparticle content, and the amount of the crystalline polar β phase is strongly enhanced when compared to pure PVDF polymer fibres. The piezoelectric response of these electroactive nanofibres is modified by an applied magnetic field, thus evidencing the magnetoelectric character of the CFO/PVDF 0–1 composites.

Stephen Ducharme - One of the best experts on this subject based on the ideXlab platform.

  • Why ferroelectric Polyvinylidene Fluoride is special
    IEEE Transactions on Dielectrics and Electrical Insulation, 2010
    Co-Authors: Matthew Poulsen, Stephen Ducharme
    Abstract:

    Ferroelectric polymers entail a number of constraints, which together limit the useful compositional variations. These constraints include the following: a stable molecular dipole moment, compact crystal structure, conformational flexibility, and minimal steric hindrance. They are well satisfied by the prototype ferroelectric polymer, Polyvinylidene Fluoride, and yet almost every other conceivable molecular structure is limited by comparison.

  • Polyvinylidene Fluoride–trifluoroethylene as a reservoir for absorbed water
    Materials Letters, 2007
    Co-Authors: Peter Jacobson, Stephen Ducharme, Luis G. Rosa, Kristin L. Kraemer, Peter A. Dowben
    Abstract:

    Abstract The absorption of water in Langmuir–Blodgett films of ferroelectric copolymers of Polyvinylidene Fluoride with trifluoroethylene is shown to depend upon the film thickness. This water absorption can have a profound effect on the dielectric properties of the copolymer films.

  • Manifestation of a Ferroelectric Phase Transition in Ultrathin Films of Polyvinylidene Fluoride
    Physics of the Solid State, 2005
    Co-Authors: A. R. Geivandov, S. G. Yudin, Vladimir M. Fridkin, Stephen Ducharme
    Abstract:

    Temperature dependences of the dielectric properties of ultrathin Polyvinylidene Fluoride films prepared using the Langmuir-Blodgett method were studied by linear and nonlinear dielectric spectroscopy. It is shown that ultrathin Langmuir films of Polyvinylidene Fluoride exhibit a manifestation of a first-order ferroelectric phase transition, which can be assigned to the interaction between the spontaneous polarization and the surfaces bounding the film. As the film thickness increases, the effect of the surfaces decreases and the ferroelectric phase transition shifts to high temperatures to vanish altogether when the temperature region of the transition rises above the melting point.

  • Theoretical study on the optical properties of Polyvinylidene Fluoride crystal
    Journal of Physics: Condensed Matter, 2003
    Co-Authors: Chun-gang Duan, Wai-ning Mei, Wei-guo Yin, Jianjun Liu, John R. Hardy, Mengjun Bai, Stephen Ducharme
    Abstract:

    We report our first-principles studies on the linear and non-linear optical properties of ferroelectric Polyvinylidene Fluoride crystal. Calculated values of the refractive indices agree well with experiments. As regards the second-harmonic-generation coefficients, theoretical values are larger than experimental ones. Possible reasons for the discrepancy are discussed.