Logo Nanoletters
Graphene-Enhanced Infrared Near-Field Microscopy

P. Li, T. Wang, H. Böckmann and T. Taubner

Nano Letters, 14, p. 4400-4405 (2014)
Graphene is a promising two-dimensional platform for widespread nanophotonic applications. Recent theories have predicted that graphene can also enhance evanescent fields for subdiffraction-limited imaging. Here, for the first time we experimentally demonstrate that monolayer graphene offers a 7-fold enhancement of evanescent information, improving conventional infrared near-field microscopy to resolve buried structures at a 500 nm depth with λ/11-resolution