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Keywords:

  • nanocomposites;
  • metals;
  • polymers;
  • electrical breakdown;
  • bistability
Thumbnail image of graphical abstract

Controlling reversible dielectric breakdown in metal/poly mer nanocomposites is reported on page 1850 by J. Kim and B. A. Grzybowski. The image illustrates reversible dielectric breakdown of an array of metal nanorods embedded in a polymer matrix and subject to an electric bias. The breakdown occurs in a threshold-like fashion such that the nanocomposite material can be repeatedly “cycled” between low- and high-conductance states. The breakdown voltage can be adjusted by engineering the properties of the polymer matrix.