Abstract
We show that scattering from a single gold nanoparticle is saturable for the first time. Wavelength-dependent study reveals that the saturation behavior is governed by depletion of surface plasmon resonance, not the thermal effect. We observed interesting flattening of the point spread function of scattering from a single nanoparticle due to saturation. By extracting the saturated part of scattering via temporal modulation, we achieve point spread function in far-field imaging with unambiguous separation of adjacent particles.
- Received 24 May 2013
DOI:https://doi.org/10.1103/PhysRevLett.112.017402
© 2014 American Physical Society
Synopsis
Better than Diffraction
Published 7 January 2014
A new microscopy method allows the imaging of nanostructures that are smaller than one eighth of the wavelength of the light used to illuminate them.
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