am401859j_si_001.pdf (306.42 kB)
Permittivity of Dielectric Composite Materials Comprising Graphene Nanoribbons. The Effect of Nanostructure
journal contribution
posted on 2016-02-19, 00:59 authored by Ayrat Dimiev, Dante Zakhidov, Bostjan Genorio, Korede Oladimeji, Benjamin Crowgey, Leo Kempel, Edward J. Rothwell, James M. TourNew lightweight, flexible dielectric
composite materials were fabricated by the incorporation of several
new carbon nanostructures into a dielectric host matrix. Both the
permittivity and loss tangent values of the resulting composites were
widely altered by varying the type and content of the conductive filler.
The dielectric constant was tuned from moderate to very high values,
while the corresponding loss tangent changed from ultralow to extremely
high. The data exemplify that nanoscale changes in the structure of
the conductive filler result in dramatic changes in the dielectric
properties of composites. A microcapacitor model most explains the
behavior of the dielectric composites.