Monolayer graphene offers a 7-fold enhancement of evanescent for better infrared microscopy

[NanoLetters] Graphene-Enhanced Infrared Near-Field Microscopy 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.

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