Wednesday, May 13, 2015

Abstract-Terahertz Waves: Perfect Extinction of Terahertz Waves in Monolayer Graphene over 2-nm-Wide Metallic Apertures

  1. Hyeong-Ryeol Park1
  2. Seon Namgung1,
  3. Xiaoshu Chen1
  4. Nathan C. Lindquist2,
  5. Vincenzo Giannini3
  6. Yan Francescato3,
  7. Stefan A. Maier3 and
  8. Sang-Hyun Oh1,*
Article first published online: 12 MAY 2015
DOI: 10.1002/adom.201570031

For enhanced light–matter interactions with 2D materials, ultra-small metallic nanogaps can be utilized. As shown in the image from S.-H. Oh and co-workers, light incident from below is strongly confined within these annular gaps and efficiently funneled through for extraordinarily large transmission. On page 667, by placing monolayer graphene at the exit of these gaps (the right side is covered with graphene), this enhanced transmission is blocked since the graphene absorbs 99% of the strongly confined waves.

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