ABSTRACT
Graphene plasmonics, which studies the collective oscillation of massless Dirac fermions inside graphene, merges two vibrant elds of study: graphene physics and plasmonics. The propagation of surface plasmon polaritons (SPP) waves in the one-atom-thick graphene can be largely controlled by graphene’s tunable surface conductivity via chemical doping or electrostatic gating. Graphene is a well-known material whose plasma frequency can range broadly from direct current (DC) to infrared, sensibly depending on the carrier density or Fermi level. The intriguing plasmonic properties of graphene open tremendous new possibilities in tunable and switchable novel terahertz (THz) and infrared optoelectronic devices, with features of compact size, ultrahigh speed, and low power consumption. In this chapter, we will review the theory and recent ndings on graphene plasmonics. We present current advances and future applications of graphene plasmonics in the extreme manipulation of light at the nanoscale.
