title: Ultrahigh field enhancement and photoresponse in atomically separated arrays of plasmonic dimers.
abstract: Combining oblique angle deposition with standard graphene transfer protocols, two planar arrays of metal nanoparticles are fabricated that are vertically separated by atomic dimensions, corresponding precisely to the thickness of a single layer of graphene, i.e., 0.34 nm. Upon illumination of light at an appropriate wavelength, the local electromagnetic field at the junction of the dimers can be increased dramatically, thereby resulting in the most sensitive graphene-plasmonic hybrid photodetector reported to date.
authors: Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore, 560012, India.
authors: Debadrita
authors: D
authors: Paria
authors: Kallol
authors: K
authors: Roy
authors: Haobijam Johnson
authors: HJ
authors: Singh
authors: Shishir
authors: S
authors: Kumar
authors: Srinivasan
authors: S
authors: Raghavan
authors: Arindam
authors: A
authors: Ghosh
authors: Ambarish
authors: A
authors: Ghosh
keywords: graphene; near field enhancement; photodetectors; plasmonics; surface-enhanced Raman scattering