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Title: Super-resolution of fluorescence-free plasmonic nanoparticles using enhanced dark-field illumination based on wavelength-modulation

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep11447· OSTI ID:1203180
 [1];  [1];  [2];  [3];  [1]
  1. Kyung Hee Univ., Gyeonggido (Korea)
  2. Korea Research Inst. of Standards and Science, Daejeon (Korea)
  3. Ames Lab., Ames, IA (United States)

Super-resolution imaging of fluorescence-free plasmonic nanoparticles (NPs) was achieved using enhanced dark-field (EDF) illumination based on wavelength-modulation. Indistinguishable adjacent EDF images of 103-nm gold nanoparticles (GNPs), 40-nm gold nanorods (GNRs), and 80-nm silver nanoparticles (SNPs) were modulated at their wavelengths of specific localized surface plasmon scattering. The coordinates (x, y) of each NP were resolved by fitting their point spread functions with a two-dimensional Gaussian. The measured localization precisions of GNPs, GNRs, and SNPs were 2.5 nm, 5.0 nm, and 2.9 nm, respectively. From the resolved coordinates of NPs and the corresponding localization precisions, super-resolution images were reconstructed. Depending on the spontaneous polarization of GNR scattering, the orientation angle of GNRs in two-dimensions was resolved and provided more elaborate localization information. This novel fluorescence-free super-resolution method was applied to live HeLa cells to resolve NPs and provided remarkable subdiffraction limit images.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
W-7405-ENG-82
OSTI ID:
1203180
Journal Information:
Scientific Reports, Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

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Cited By (7)

Plasmonic Nanoprobes for Multiplexed Fluorescence-Free Super-Resolution Imaging journal August 2018
Nanomaterials for optical data storage journal October 2016
Wavelength-scale errors in optical localization due to spin–orbit coupling of light journal October 2018
Single point single-cell nanoparticle mediated pulsed laser optoporation journal January 2020
Membrane-wrapped nanoparticles probe divergent roles of GM3 and phosphatidylserine in lipid-mediated viral entry pathways journal September 2018
Augmented 3D super-resolution of fluorescence-free nanoparticles using enhanced dark-field illumination based on wavelength-modulation and a least-cubic algorithm journal September 2016
Current achievements of nanoparticle applications in developing optical sensing and imaging techniques journal November 2016