2D atomic crystals probe: how hot it is in a plasmonic 'hotspot'

A research group led by Shunping Zhang and Hongxing Xu at Wuhan University, China, has developed a quantitative SERS technique to probe the maximum plasmonic fields before effects such as electron tunneling become dominant. The researchers turned to molybdenum disulfide (MoS2)-a graphene-like, two-dimensional atomic layer to tune the distance between a gold nanoparticle and a smooth gold film.

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