Carbon nanomaterials such as carbon nanotubes improved the dielectric properties of commercially available polymers, Ecoflex ® . It was found that there is an increase in the dielectric value with the rise of the carbon nanotube's contents. Reduced graphene oxide (rGO) improved the dielectric properties of polyaniline (PANI)/calcium copper titanate (CaCu3Ti4O12) . It can be also improved PVP-PVA , and starch .