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Updated: Mar 3, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Experimental Demonstration of Localized Plasmonic Structured Illumination Microscopy
Joseph L Ponsetto1, Anna Bezryadina1, Feifei Wei1
1Department of Electrical and Computer Engineering, ‡Department of Physics, §Neurobiology Section, Biological Sciences Division, and ∥Materials Science and Engineering, University of California, San Diego , 9500 Gilman Drive, La Jolla, California 92093, United States.
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.

