Experimental Demonstration of Localized Plasmonic Structured Illumination Microscopy.

Ponsetto, Joseph L; Bezryadina, Anna; Wei, Feifei; Onishi, Keisuke; Shen, Hao; Huang, Eric; Ferrari, Lorenzo; Ma, Qian et al. · ACS Nano · 2017

basic_science · Level V

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Abstract

Super-resolution imaging methods such as structured illumination microscopy and others have offered various compromises between resolution, imaging speed, and biocompatibility. Here we experimentally demonstrate a physical mechanism for super-resolution that offers advantages over existing technologies. Using finely structured, resonant, and controllable near-field excitation from localized surface plasmons in a planar nanoantenna array, we achieve wide-field surface imaging with resolution down to 75 nm while maintaining reasonable speed and compatibility with biological specimens.