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Related Concept Videos

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Optical-force-induced artifacts in scanning probe microscopy.

Dana C Kohlgraf-Owens1, Sergey Sukhov, Aristide Dogariu

  • 1CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, USA.

Optics Letters
|December 20, 2011
PubMed
Summary
This summary is machine-generated.

Near-field scanning probe microscopy assumes distance regulation is independent of optical signals. Our study shows these signals are entangled by optically induced forces, causing artifacts in optical field and topographic measurements.

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Area of Science:

  • Physics
  • Materials Science
  • Surface Science

Background:

  • Near-field scanning probe microscopy (SPM) is a powerful technique for nanoscale imaging.
  • Current SPM practices often assume independence between distance regulation and optical signals.

Purpose of the Study:

  • To investigate the interplay between distance regulation and optical signals in SPM.
  • To identify and characterize artifacts arising from the coupling of these signals.

Main Methods:

  • Theoretical modeling of optically induced forces in SPM.
  • Experimental validation using advanced SPM setups.

Main Results:

  • Demonstrated entanglement between distance regulation and optical signals in SPM.
  • Identified optically induced forces as the cause of this coupling.
  • Quantified artifacts in optical field magnitude estimation.
  • Observed topographic map distortions due to the signal entanglement.

Conclusions:

  • The assumption of independent distance regulation and optical signals in SPM is invalid.
  • Optically induced forces significantly impact SPM measurements, leading to artifacts.
  • Accurate SPM analysis requires accounting for the coupling between optical and topographic data.