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Related Concept Videos

Phase Contrast and Differential Interference Contrast Microscopy01:26

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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
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Quantitative Amplitude and Phase Imaging with Interferometric Plasmonic Microscopy.

Yuting Yang1, Chunhui Zhai1, Qiang Zeng1

  • 1Institute for Personalized Medicine, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China.

ACS Nano
|November 8, 2019
PubMed
Summary
This summary is machine-generated.

Quantitative phase imaging in plasmonic microscopy is now possible without complex optics. This breakthrough enables accurate mapping of surface plasmon near fields for nanomaterial analysis and sensing.

Keywords:
holographyinterferometric plasmonic microscopynanoparticlesphase retrievalsurface plasmon resonance

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Area of Science:

  • Optics
  • Nanotechnology
  • Materials Science

Background:

  • Plasmonic microscopy offers high sensitivity for nanoscopic analysis.
  • Quantitative phase imaging provides crucial refractive index information for nanomaterial identification.
  • Current methods for quantitative phase imaging often require complex optical setups.

Purpose of the Study:

  • To demonstrate quantitative amplitude and phase imaging in plasmonic microscopy.
  • To develop a method for accurate mapping of surface plasmon near fields.
  • To enable direct visualization of plasmonic interactions with nanomaterials.

Main Methods:

  • Utilized interferometric plasmonic microscopy with holographical reconstructions.
  • Operated microscopy over the surface plasmon resonance angle to separate twin images.
  • Acquired and analyzed plasmonic patterns for amplitude and phase distribution.

Main Results:

  • Successfully achieved quantitative amplitude and phase imaging capabilities.
  • Enabled direct visualization of complex surface plasmon fields from nanoparticles and nanowires.
  • Demonstrated imaging without the need for nanoscopic scanning probes.

Conclusions:

  • The developed technique simplifies quantitative phase imaging in plasmonic microscopy.
  • The method allows for direct visualization and analysis of nanoplasmonic fields.
  • Potential applications include nanomaterial identification, sensing, and super-resolution imaging.