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  • Single Negative Metamateria...
    Li, Bin; Sui, Gang; Zhong, Wei-Hong

    Advanced materials (Weinheim), November 6, 2009, Volume: 21, Issue: 41
    Journal Article

    Negative permittivity is realized in unstructured imide polymer/carbon nanofiber (CNF) nanocomposites. The microstructure of CNFs is one of the factors that exert profound effects on the permittivity. Compared with cup‐stacked CNFs‐filled polyetherimide nanocomposites, the negative permittivity in the herringbone CNFs‐filled nanocomposites is inhibited, occurring only at the frequencies near resonance, where the permittivity dips slightly into the negative region.