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    How is electrical percolation achieved in nano doped materials? Direction towards more efficient doping

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    Type
    Conference Paper
    Authors
    Lubineau, Gilles cc
    Han, Fei cc
    Mora Cordova, Angel cc
    KAUST Department
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2015-01-01
    Permanent link to this record
    http://hdl.handle.net/10754/666586
    
    Metadata
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    Abstract
    One route to create electrically conductive polymeric material is to dope them using highly conductive nanoparticles such as carbon nanotubes. It is well known that, when a threshold volume fraction is reached, a percolated network is achieved in which efficient conduction can take place. In such a network, inter particles charge transfer takes place over a very short distances, when particles become close enough to each other so a tunneling mechanism becomes possible. It follows that most of the introduced particles are not linked to the percolated path, thus not participating in the doping mechanism. The spatial arrangement of the particles plays a major role in the way they are participating in the increase in macroscopic electrical conductivity. We propose here to go further than the usual method of quantifying filler content based on weight/volume fractions by studying in detail the topology of the particle arrangement. This provides an in-depth understanding about how the conductive path develops when increasing the filler content and paves the way for an optimal use of the doping particles.
    Publisher
    Society of Plastics Engineersinfo@4spe.org
    Conference/Event name
    73rd Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Orlando 2015
    ISBN
    9780985011277
    Additional Links
    https://research.kaust.edu.sa/en/publications/how-is-electrical-percolation-achieved-in-nano-doped-materials-di
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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